CN106818817A - A kind of Herbicidal combinations - Google Patents

Abstract

The invention provides a kind of Herbicidal combinations, its active component is made up of halosulfuronmethyl and mefenacet；The weight proportion of halosulfuronmethyl and mefenacet is 1:1-1:100.The invention further relates to purposes of the Herbicidal combinations in preventing and treating broad-leaved section weeds, sedge weed or the undesirable plant growth of grassy weed, the barnyard grass (Echinolchloacrus-galli particularly in cereal crops are prevented and treated；ECHCG), China Sprangletop (Leptochloa chinensis；LEFCH the purposes) and in difformed galingale herb (Cyperus difformis L) undesirable plant growth.The present invention also provide it is a kind of prevent and treat the method for undesirable plant growth, including undesirable plant or its growth place is contacted with the Herbicidal combinations of the invention of herbicidally effective amount or to the Herbicidal combinations of the invention that herbicidally effective amount is applied in soil or water to prevent from being not intended to the germination or growth of plant.Composition provided by the present invention can significantly improve herbicidal effect, effectively control weeds, and not produce toxicity to crops, improve its compatibility with crops.

Description

A kind of Herbicidal combinations

Technical field

The invention belongs to pesticide field, more particularly to a kind of Herbicidal combinations and a kind of undesirable plant of control The method of thing growth.

Background technology

World food production is annual because disease, worm, crop smothering loss are huge, and the whole season of growth of crop is nearly all Can be encroached on by various weeds, Weed infestation is also the key factor for restricting crop yield.Therefore, agriculture The preventing and treating of industry weeds is always care and important problem the most in agricultural production.

Protecting weeds and other vegetation infringement of the crops from suppressing crop growth is persistently occurred in agricultural Problem.To solve the problem, the chemicals and chemicals of many control weed growths are in business Use.

Paddy rice is one of world's staple food crop, in the world nearly half population, including almost whole East Asia and The population in Southeast Asia, is food all with rice, is produced throughout each continent in addition to the South Pole, in China paddy rice It is most important cereal crops.China's rice growing area accounts for the 1/4 of national cereal crops, and yield then accounts for one More than half.No matter cultivated area and yield, all ranked first in China cereal crops.

The preventing and treating of agricultural weed is always care and important problem the most in agricultural production.The whole life of crop Long season can nearly all be endangered by various weeds.The all rice workspaces of China always have a large amount of weeds, Weeds in paddy field species is a lot, and various regions are different because of the factor weeds such as weather, soil species, in these weeds with Barnyard grass occurring area is maximum with harm, also difformed galingale herb, Monochoria vaginalis, flat stalk Fischer grass, moleplant seed, eye The hazard areas such as dish, Monochoria korsakowii and the order of severity are taken second place.

Halosulfuronmethyl (Halosulfuron-methyl, CAS NO.100784-20-1) belongs to sulfonylurea herbicide Agent, sterling is white powdery solids, and 175.5-177.2 DEG C of fusing point is insoluble in water, in most solvents as just Solubility in hexane, acetone, dichloromethane, toluene, ethyl acetate equal solvent is also smaller.The phonetic sulphur of chlorine pyrrole Grand is the chloro- 5- of 3- [[[(4,6- dimethoxy -2- pyrimidine radicals) amino] carbonyl]] amino] sulfonyl] -1- methyl isophthalic acid H- pyrroles The adopted name of azoles -4- carboxylate methyl esters.Halosulfuronmethyl is that sulfonylurea rice field selectivity inner sucting conduction type is removed Careless agent.Halosulfuronmethyl is mainly absorbed by root system, can also be absorbed by cauline leaf, in weeds plant body Rapid transfer, suppresses weed growth, and weeds are gradually dead.The activity of weeding of halosulfuronmethyl is described in The Pesticide Manual,Fourteenth Editioni,2006.Halosulfuronmethyl control paddy rice, corn, sorghum, Many broad-leaveds and nut nutgrass flatsedge in sugarcane, nut and turf.

Mefenacet (Mefenacet), chemical name is 2 one benzothiazole -2- base oxygen-N- methyl acetanilides Amine, its molecular structural formula is：

Mefenacet is selective inner sucting conduction type acyl aniline herbicide, is that cell growth and division suppress Agent, has especially strong inhibitory action to the division of young original mother cell.Mainly absorbed by bud scale and root, through wood Matter portion and bast are conducted to the young shoot and tender leaf of weeds, prevent weed growth point cell division elongation, work as standing grain Undergraduate course weeds (barnyard grass) are gathered at growing point quickly after contacting this medicine.Cell particularly mother cell is played Suppress cell division, increase, so as to hinder the growth of barnyard grass until dead.Mefenacet is because it is in water Middle solubility is low, so under the conditions of water conservation, pesticide-applying weeding activity highest.Soil is very strong to this product absorption affinity, Dose major part is adsorbed on upper soll layer after dispenser, and forms process layer within 1 centimetre of upper soll layer, So be avoided that paddy growth contact of the point with medicament, it is produced security higher, and to growing point at The weeds such as the barnyard grass in upper soll layer have stronger prevention fertility and kill ability, and numerous with seed to top layer The perennial weeds for growing also has inhibitory action, low to deep layer weeds effect.

The use of chemical herbicide is one of important symbol of agricultural modernization, in recent years, the sales volume of herbicide Increase year by year, administration area also expands year by year.But, the large area with numerous herbicide kinds persistently makes With many problems of generation, such as Weed Resistance problem starts to show especially, especially the resistance problem of elder weed It is especially prominent；In addition, the herbicide single dose mode of action is single, the lasting period is short etc..Therefore, presently, there are Weeding scope is wide, selectivity is by force and to the urgent of the less release weedicide of herbicide resistance pressure and combinations thereof Demand.

But, as numerous herbicide kinds are persistently used in rice terrace large area, also produce the problem of many： (1) Weed Resistance is protruded, wherein the resistance of the herbicides such as propanil, butachlor is more protruded with barnyard grass, also There is sedge weed also to engender the resistance problem of sulfonylurea herbicide；(2) elder weed and many Year, raw Weed infestation turned into major issue, and particularly above the average age for marriage barnyard grass and Cyperaceae perennial weeds are more prominent； (3) effect of herbicide kind is single, and the lasting period is short.

In some cases, have shown that herbicidal active component more has in combination compared with being administered alone Effect, this referred to as " acts synergistically ".Synergy is two or more factor interactions so that work as combination Shi Xiaoguo than based on respectively apply each factor response desired by effect it is good.

CN104886104A discloses removing for a kind of penoxsuam and halosulfuronmethyl and mefenacet Careless composition, active ingredient is penoxsuam and halosulfuronmethyl and mefenacet, and remaining is agricultural chemicals Auxiliary agent；Herbicidal combinations of the present invention are applied to preventing and treating transplanted rice field annual grassy weeds；CN104585213A A kind of Herbicidal combinations containing pendimethalin, mefenacet and pyrazosulfuron or halosulfuronmethyl are disclosed, It contains effective ingredient A and B, and wherein A is pendimethalin, and B is mefenacet.The Herbicidal combinations A kind of effective ingredient C can be also included, C is pyrazosulfuron or halosulfuronmethyl；CN104012566A is disclosed A kind of rice terrace Synergistic herbicide compositions, it includes mesotrione, mefenacet and halosulfuronmethyl three Plant active component.

CN104012563A discloses a kind of Herbicidal combinations containing flucetosulfuron and mefenacet, its Including active ingredient flucetosulfuron and mefenacet, remaining is insecticides adjuvant, flucetosulfuron and benzene thiophene acyl grass The quality parts ratio of amine is 1:5-5:1, flucetosulfuron and mefenacet quality summation are in Herbicidal combinations Mass percent is 4%~95%.According to application needs, the present invention can be prepared into and dispersible oil-suspending agent, hangs One kind in floating agent, wettable powder, water dispersible granules, for preventing and kill off transplanting rice field annual grassy weeds. CN102626100A discloses a kind of agricultural chemicals for preventing and treating paddy field weed and preparation method thereof, including benzene thiophene acyl Careless amine, pyrazosulfuron, ammonium sulfate, high effective additives, each component part by weight is：Pyrazosulfuron 0.4 to 0.6%, Mefenacet 6-9%, ammonium sulfate 77-84.5%%, high effective additives 10%.By mefenacet, the phonetic sulphur of pyrrole Grand, ammonium sulfate, high effective additives mix after adding a certain amount of water, and stirring is granulated after a period of time, most Filter afterwards, pack.

Therefore, how existing herbicide is carried out into efficient combination, so as to get Herbicidal combinations play collaboration make With the emphasis for having turned into current research.

The content of the invention

To solve the deficiencies in the prior art, the invention aims to provide a kind of Herbicidal combinations so that ability Field technique personnel crop by once or several times using these herbicides after control various weeds or a certain difficult With the weeds species for controlling.The present invention is combined by by halosulfuronmethyl and mefenacet, with special Favourable mode obtain technical staff needed for Weeds distribution level, or even including unmanageable some weeds Species.And, the amount of application of single component in combination can be significantly reduced using the present composition, to making The phytotoxicity of thing does not produce unacceptable toxicity.

It is up to this purpose, present invention employs following technical scheme：

The invention provides a kind of Herbicidal combinations, its active component is by halosulfuronmethyl and mefenacet group Into；The halosulfuronmethyl and mefenacet weight proportion are 1:1-1:100, preferably 1:1-1:50, enter One step is preferably 1:1-1:40, it is further preferably 1:5-1:30, more preferably 1:5-1:25, most preferably 1:5-1:20.

The present invention provides a kind of Herbicidal combinations, and active component is made up of halosulfuronmethyl and mefenacet, Also include filler and/or surfactant.

The formulation of the Herbicidal combinations be wettable powder, missible oil, suspending agent, microcapsules, microemulsion, It is aqueous emulsion, suspended emulsion, water dispersible granules, microcapsule suspension-suspendinagent agent, ultra low volume liquids, tablet, micro- Capsule granule.

In the Herbicidal combinations, the total amount of the halosulfuronmethyl and mefenacet accounts for the Herbicidal combination Thing 5%-90% by weight.

In the Herbicidal combinations, the total amount of the halosulfuronmethyl and mefenacet accounts for the Herbicidal combination Thing 10%-80% by weight.

In the Herbicidal combinations, the total amount of the halosulfuronmethyl and mefenacet accounts for the Herbicidal combination Thing 15%-70% by weight.

The Herbicidal combinations may also include safener, the safener be cloquitocet_mexyl, benoxacor, fenclorim, At least one in dichlormide, mefenpyrdiethyl or isoxadifen, the safener is relative to activity The weight proportion of component total amount is 1:100-20:1.

A kind of purposes of Herbicidal combinations in undesirable plant growth is prevented and treated.

A kind of Herbicidal combinations undesirable plant in preventing and treating grass family, broad-leaved section weeds, sedge weed Purposes in growth.

A kind of Herbicidal combinations are preventing and treating barnyard grass (Echinolchloacrus-galli；ECHCG), Chinese a thousand pieces of gold Son category (Leptochloa chinensis；) and difformed galingale herb (Cyperus difformis L) is undesirable LEFCH Purposes in plant growth.

A kind of Herbicidal combinations are used to be prevented and treated in useful crop the purposes of undesirable plant growth.It is described to remove Careless composition can be used for prevent and treat wheat, corn, sugar beet, sugarcane, cotton, paddy rice, beans, flax, In barley, oat, rye, triticale, rape, potato, broomcorn millet, herbage, greenery patches or lawn, fruit tree The undesirable plant of broad-leaved section weeds, sedge weed, grassy weed in the Zhong Huofei crop areas of plantation The purposes of thing growth.Can be especially useful for not wished in broad-leaved section weeds, sedge weed in preventing and treating rice crop The purposes of the plant growth of prestige.

A kind of Herbicidal combinations are used to be prevented and treated in useful crop the purposes of undesirable plant growth, described to remove Careless composition is tolerated by the useful crop.

A kind of method for preventing and treating undesirable plant growth, including：I () is before undesirable plant germination (before bud)；(ii) after undesirable plant germination (after bud)；Or (iii) is at (i) and (ii), The Herbicidal combinations of the invention of herbicidally effective amount are applied to undesirable plant or its growth place.

A kind of method for preventing and treating undesirable plant growth, by the active component chlorine of Herbicidal combinations of the invention Pyrazosulfuron and mefenacet collectively or individually are applied to undesirable plant or its growth place.

A kind of method for preventing and treating undesirable plant growth, including Herbicidal combinations of the invention are used as having Applied in the presence of other reproductive parts of the plant of thing, the seed of useful crop or useful crop；It is preferred that incite somebody to action this The Herbicidal combinations of invention are directly applied to plant before before useful crop is sowed or germinates or after planting germinateing Or the location of plant.

It is a kind of to prevent and treat the method for undesirable plant growth, including make undesirable plant or its growth place with The Herbicidal combinations of the invention of herbicidally effective amount are contacted or to this hair in soil or water using herbicidally effective amount Bright Herbicidal combinations are preventing from being not intended to the germination or growth of plant.

Compared with prior art, the present invention at least has the advantages that：

(1) present invention is compounded by by halosulfuronmethyl with mefenacet so that the Herbicidal combination The activity of thing exceedes active sum when both reactive compounds are each applied；In addition, by adjust this two Plant the weight percentage and its proportioning of reactive compound thing so that it greatly improves to undesirable plant Prevention effect, activity of weeding can reach more than 95%；

(2) present invention is mixed with both mefenacets by halosulfuronmethyl, obtains in a particularly advantageous manner Weeds distribution level needed for technical staff, or even including unmanageable some weeds species.And, apply The amount of application of single component in combination can be significantly reduced with the present composition, the phytotoxicity to crop does not have There is the unacceptable toxicity of generation, improve its compatibility with crops.

Specific embodiment

It from weeds and other vegetation infringement of crop growth is always persistently occurred in agricultural to protect crops Problem.To help against the problem, the researcher of synthesis chemical field has prepared various effective controls Make the chemicals and chemicals of this obnoxious growth.The chemical herbicide of many types is public in the literature Open, a large amount of chemical herbicides are used in business.

The combination of active principles of different agricultural chemicals is made mixture, is exploitation at present and development novel pesticide and preventing and treating A kind of agriculturally effective manner of resistant weed.After the pesticide activity component combination of different cultivars, usual table Reveal three kinds of type of action：Summation action, synergistic effect and antagonism.But which kind of effect, nothing be specially Method is predicted.Surprisingly, the combination of active component exceeded it is desired to the weeds to be controlled in principle Additive effect, and therefore particularly expand the sphere of action of both active components both ways (i.e., Show SA)：First, the rate of application of single compound is reduced and maintains good effect water It is flat；Secondly the independent material in the range of low rate of application has become useless situation from the point of view of agronomic point Under, composition obtains high-caliber Weeds distribution；Other composition for preventing and controlling also not controlled kind, anti- Control and extend and/or required to single herbicide or various herbicide tolerants or resistant kind, using the phase Number of times reduction is administered alone；And for user, obtain in economic and ecology advantageously Control of weeds system.

Super plus and (=collaboration) effect can be produced during the combined administration of halosulfuronmethyl and mefenacet.It is described Acting synergistically should be able to reduce the rate of application of each active material, drug effect, the preventing and treating improved under identical rate of application so far Species, the extension administration period, the number of times being administered alone needed for reducing that cannot still prevent and treat.Therefore for using It is economically to resist system with weeds more favourable in ecology for person.This activity can especially be reduced to be applied Consumption, controls broader spectrum of broad-leaved section, grass family, sedge weed, compensate for antagonism weed population Active leak, rapider and more reliable activity, the longer lasting period, applying only once or several times can be complete Control noxious plant and extend the working life of active component in combination.

Above-mentioned characteristic is needed so that crops break away from the competition of undesirable plant in weeds in field preventing and treating, And/or increase yield.The combination of halosulfuronmethyl of the present invention and mefenacet significantly surpasses in terms of above-mentioned characteristic Prior art is gone out.

The invention provides a kind of Herbicidal combinations, its active component is by halosulfuronmethyl and mefenacet group Into；The halosulfuronmethyl and mefenacet weight proportion are 1:1-1:100, preferably 1:1-1:50, enter One step is preferably 1:1-1:40, it is further preferably 1:5-1:30, more preferably 1:5-1:25, more preferably 1:5-1:20.

The weight proportion of halosulfuronmethyl and mefenacet in the present invention for example can also be 1:1、1:5、 1:10、1:15、1:20、1:25、1:30、1:35、1:40、1:45、1:50、1:55、1:60、1:65、1:70、 1:75、1:80、1:85、1:90、1:95、1:100。

It has unexpectedly been discovered that, compared with the rate of application of individual compounds, halosulfuronmethyl and benzene thiophene acyl The combination of careless amine shows the synergy to Weeds distribution when equal to or less than the rate of application, especially right Barnyard grass (Echinolchloacrus-galli；ECHCG), China Sprangletop (Leptochloa chinensis； LEFCH), black nightshade (Solanum nigrum L.), Tong fiber crops (Abutilon theophrasti Medic), iron amaranth Dish (AcalyphaaustralisL), yellow nut nutgrass flatsedge (yellow nutsedge) (Cyperus esculentus； CYPES control) shows obvious synergy.

Halosulfuronmethyl rate of application can change in a wide range, for example in 0.1g to 200g A.I./ha (hereinafter, A.I./ha represents " active material/hectare "=reactive compound meter based on 100% purity).With 0.1g to 100g When the rate of application of A.I./ha is applied, when prior to seeding, before plantation or before bud and middle use halosulfuronmethyl after bud When, there is relatively wide noxious plant to be prevented and treated to compose for it, such as halosulfuronmethyl can be used to controlling paddy rice, Many broad-leaveds and nut nutgrass flatsedge in corn, sorghum, sugarcane, nut and turf.

The rate of application of mefenacet can change in a wide range, for example 1g to 200g A.I./ha, and it has Relatively wide noxious plant spectrum to be prevented and treated.

Halosulfuronmethyl and the suitable proportion of mefenacet for example can be by reference to mentioned individualized Depending on the rate of application of compound.In Herbicidal combinations of the invention, rate of application can be generally reduced.In the present invention Herbicidal combinations in, the weight proportion of halosulfuronmethyl and mefenacet is 1:1-1:100.

Preferably, the weight proportion of halosulfuronmethyl and mefenacet is 1:1-1:50.

Particularly, the weight proportion of halosulfuronmethyl and mefenacet is 1:1-1:40；

More special, the weight proportion of halosulfuronmethyl and mefenacet is 1:5-1:30.

More special, the weight proportion of halosulfuronmethyl and mefenacet is 1:5-1:25.

More special, the weight proportion of halosulfuronmethyl and mefenacet is 1:5-1:20.

Herbicidal combinations of the invention can also be comprising one or more and halosulfuronmethyl and mefenacet component Other reactive compounds that are different and also serving as selective herbicide.

Herbicidal combinations of the invention can also include the various reactive compounds of other components, be selected from safety Agent, fungicide, insecticide, acaricide, nematicide, bird repellent, soil conditioner, plant Thing nutrient (fertilizer) and structure are different from herbicide and the plant of halosulfuronmethyl and mefenacet Growth regulator.

Preferably, the different types of agrochemically active compound includes Acetochlor (acetochlor), lives Change ester (acibenzolar), diazosulfide (acibenzolar S methyl), acifluorfen (acifluorfen), Aclonifen (aclonifen), alachlor (alachlor), allidochlor (allidochlor), alloxydimsodium (alloxydim), Ametryn (ametryn), amicarbazone (amicarbazone), amidosulfuron (amidosulfuron), chlorine Fampridine Sour (aminopyralid), Amrol (amitrole), Amcide Ammate (ammonium sulfamate), ancymidol (ancymidol), anilofos (anilofos), sulphur grass spirit (asulam), atrazine (atrazine), azafenidin (azafenidin), azimsulfuron (azimsulfuron), benfuresate (benfuresate), bensulfuron-methyl (bensulfuron), benzfendizone (benzfendizone), benzobicylon (benzobicyclon), benzofenap (benzofenap), fluorine sulfanilamide (SN) grass (benzofluor), fluorine benzofenap (bicyclopyrone), bispyribac-sodium (bispyribac Sodium), Brominal (bromoxynil), butachlor (butachlor), butafenacil (butafenacil), secondary Fourth spirit (butralin), cafenstrole (cafenstrole), carbetamide (carbetamide), carfentrazone (carfentrazone), chlorimuronethyl (chlorimuron, chlorimuron ethyl), cycocel (chlormequat Chloride), chlortoluron (chlorotoluron), chlorine sulphur grand (chlorsulfuron), cinmethylin (cinmethylin), Cinosulfuron (cinosulfuron), clethodim (clethodim), clomazones (clomazone), clomeprop (clomeprop), clopyralid (clopyralid), cyanazine (cyanazine), cyclanilide (cyclanilide), AC322140 (cyclosulfamuron), cycloxydim (cycloxydim), ring cafenstrole (cyprazole), daimuron (daimuron/dymron), Mediben (dicamba), diclofop-methyl (diclofop Methyl), smart diclofop-methyl (diclofop P methyl), diclosulam (diclosulam), acetyl alachlor (diethatyl, diethatyl ethyl), diflufenican (diflufenican), diflufenzopyr (diflufenzopyr, Diflufenzopyr sodium), oxazoles grand (dimefuron), dimepiperate (dimepiperate), dimethachlor (dimethachlor), dimethametryn (dimethametryn), diphenamide (diphenamid), dipropetryn (dipropetryn), diquat dibromide (diquat), diuron (diuron), ethametsulfuron (ethametsulfuron, Ethametsulfuron methyl), ethephon (CEPHA),2-(chloroethyl) phosphonic acid (ethephon), ethidimuron (ethidimuron), ethoxysulfuron (ethoxysulfuron), ethobenzanid (etobenzanid), oxazoles diclofop-methyl (fenoxaprop), Jing oxazole standing grain Careless spirit (fenoxaprop P), oxazoles diclofop-methyl (fenoxaprop ethyl), fentrazamide (fentrazamide), Flazasulfuron (flazasulfuron), florasulam (florasulam), fluazifop (fluazifop), smart pyrrole Fluorine diclofop-methyl (fluazifop P), fluazifop-P-butyl (fluazifop butyl), efficient fluazifop butyl ester (fluazifop P butyl), fluazolate (fluazolate), flucarbazonesodium (flucarbazone, flucarbazone Sodium), flucetosulfuron (flucetosulfuron), flufenacet (flufenacet), flumetralim (flumetralin), Flumetsulam (flumetsulam), flumioxazin (flumioxazin), alkynes grass amine (flumipropyn), fluorine Careless grand (fluometuron), fluorodifen (fluorodifen), fluoroglycofen-ethyl (fluoroglycofen, Fluoroglycofen ethyl), flupoxam (flupoxam), flupyrsulfuron-methyl-sodium (flupyrsulfuron), halozydine Ketone (fluridone), fluorochloridone (flurochloridone), fluroxypyr (fluroxypyr), flurtamone (flurtamone), thiazole oxamide (fluthiamide), fomesafen (fomesafen), Glufosinate (glufosinate, glufosinate ammonium), Glufosinate P (glufosinate P, glufosinate P Ammonium), Glufosinate P sodium salts (glufosinate P sodium), glyphosate (glyphosate), glyphosate Isopropyl ammonium salt (glyphosate isopropylammonium), fluorine nitre sulfonamide (halosafen), fluazifop-butyl (haloxyfop), smart fluazifop-butyl (haloxyfop P), fluorine pyrrole second standing grain spirit (haloxyfop ethoxyethyl), essence Fluorine pyrrole second standing grain spirit (haloxyfop P ethoxyethyl), haloxyfop-P-methyl (haloxyfop methyl), smart fluorine pyrrole first Standing grain spirit (haloxyfop P methyl), hexazinone (hexazinone), miaow oxalic acid (imazamethabenz, Imazamethabenz methyl), imazamox (imazamox, imazamox ammonium), first miaow Azoles nicotinic acid (imazapic), imazapyr (imazapyr, imazapyr isopropylammonium), imidazoles quinoline Quinoline acid (imazaquin, imazaquin ammonium), imazethapyr (imazethapyr, imazethapyr Ammonium), imazosulfuron (imazosulfuron), inabenfide (inabenfide), indanofan (indanofan), Iodine metsulfuron-methyl (iodosulfuron, iodosulfuron methyl sodium), ioxynil (ioxynil), isoproturon (isoproturon), Yi Evil acyls grass amine (isoxaben), Yi Evil chlorine humulone (isoxachlortole), isoxaflutoles (isoxaflutole), Yi Evil grass ether (isoxapyrifop), lactofen (lactofen), lenacil (lenacil), Chlorine sulphonyl grass amine (mefluidide), methyl piperidine (mepiquat chloride), mesosulfuronmethyl (mesosulfuron, Mesosulfuron methyl), mesotrione (mesotrione), methabenzthiazuron (methabenzthiazuron), Metamitron (metamitron), metazachlor (metazachlor), methazole (methazole), Sulfonylurea (methiopyrsulfuron), methoxyphenone (methoxyphenone), methyldymron (methyldymron), different Methoxalamine (metolachlor), S-metolachlor (S metolachlor), metosulam (metosulam), Metoxuron (metoxuron), metribuzin (metribuzin), metsulfuron-methyl (metsulfuron, metsulfuron Methyl), molinate (molinate), monosulfmeturon (monosulfuron), monosulfmeturon ester (monosulfuron Ester), telvar (monuron), napropamide (napropamide), nicosulfuron (nicosulfuron), propine Evil humulones (oxadiargyl), Evil humulone (oxadiazon), oxasulfuron (oxasulfuron), oxaziclomefones (oxaziclomefone), mefenacet (oxyfluorfen), paclobutrazol (paclobutrazol), paraquat (paraquat, paraquat dichloride), Huan Wu Evil humulones (pentoxazone), pethoxamid (pethoxamid), Picloram (picloram), fluorine pyrrole acyl grass amine (picolinafen), pinoxaden (pinoxaden), piperophos (piperophos), pretilachlor (pretilachlor), probenazole (probenazole), profluazol (profluazol), profluralin (prifluraline), clefoxidim (profoxydim), prometryn (prometryn), Propanil (propanil), propazine (propazine), Chem hoe (propham), propisochlor (propisochlor), The phonetic sulphur of piperazine imidazoles (propyrisulfuron), propyzamide (propyzamide), prosulfocarb (prosulfocarb), Prosulfuron (prosulfuron), prynachlor (prynachlor), pyraclonil (pyraclonil), pyraflufen-ethyl (pyraflufen, pyraflufen ethyl), pyrazosulfuron (pyrazosulfuron, pyrazosulfuron ethyl)), Iso-propyl-ester nitrofen (pyribambenz isopropyl), propyl-ester nitorfen (pyribambenz propyl), pyribenzoxim (pyribenzoxim), pyributicarb (pyributicarb), pyriftalid (pyriftalid), KIH 6127 (pyriminobac, Pyriminobac methyl), Nylar (pyrimisulfan), pyrithiobacsodium (pyrithiobac, pyrithiobac Sodium), pyroxasulfone, pyroxsulam (pyroxsulam), dichloro quinolinic acid (quinchlorac), Quinmerac (quinmerac), quizalofop-ethyl (quizalofop), Quizalotop-ethyl (quizalofop P), Quizalotop-ethyl Ethyl ester (quizalofop P ethyl), rimsulfuron (rimsulfuron), benzene flumetsulam (saflufenacil), Zhong Ding Logical (secbumeton), sethoxydim (sethoxydim), Tupersan (siduron), sulphur humulone (sulcotrione), first Sulphur grass amine (sulfentrazone), sulfometuronmethyl (sulfometuron, sulfometuron methyl), Thidiazuron (thidiazuron), thifensulfuronmethyl (thifensulfuron, thifensulfuron methyl), benthiocarb (thiobencarb), tiocarbazil (tiocarbazil), triasulfuron (triasulfuron), triaziflam (triaziflam), Tribenuron-methyl (tribenuron, tribenuron methyl), trichloroacetic acid (TCA), trichlopyr (triclopyr), Tridiphane (tridiphane), trifloxysulfuron (trifloxysulfuron, trifloxysulfuron sodium), fluorine pleasure Clever (trifluralin), triflusulfuronmethyl (triflusulfuron), triflusulfuronmethyl methyl esters (triflusulfuron methyl), three First grand (trimeturon), TrinexAN_SNacethyl (trinexapac, trinexapac ethyl), tritosulfuron (tritosulfuron), Tsitodef, uniconazole P (uniconazole).

Herbicidal combinations of the invention with glyphosate, glufosinate-ammonium, Mediben, imidazolone, sulfonylureas, It is glyphosate, glufosinate-ammonium, Mediben, imidazolone, sulphur using crop when the agents in combination such as 2,4-D are used Uride or 2,4-D tolerant crops.

Although the halosulfuronmethyl and mefenacet show good or even enough in a large amount of crops Selectivity, in principle, in some crops, particularly also mix with other less herbicides of selectivity When, it is possible that to the phytotoxicity of crop plants.So comprising Herbicidal combinations of the invention with And the composition of one or more safener is particularly advantageous.The safener is used with effective dose of detoxifying, Such as economically important crop or the reduction herbicide used in planting fruit trees garden (plantation crops) Plant toxicity side effect.The economically important crop such as cereal (wheat, barley, rye, oat, Corn, paddy rice and broomcorn millet), sugar beet, sugarcane, rape, cotton and soybean, preferred cereal, specifically for water Rice.

Hereinafter for example it is suitable for compound (including the possible stereoisomer and agriculturally conventional of safener Ester or salt)：Benoxacor (benoxacor), benthiocarb (benthiocarb), cloquitocet_mexyl (cloquintocet (- mexyl)), Study on brassinolide (brassinolide), cyometrinil (cyometrinil), cyprosulfamide, dimepiperate (dimepiperate), dichlormide (dichlormid), dicyclonon, o- phenyl phosphoric acid o, o- The careless amine of diethyl ester (dietholate), fenchlorazole (fenchlorazole (- ethyl)), fenclorim (fenclorim), solution (flurazole), fluxofenim (fluxofenim), Xie Cao oxazoles (furilazole), disulfoton (disulfoton), double Ben oxazoles acid (isoxadifen (- ethyl)), mefenpyrdiethyl (mefenpyr (- diethyl)), methyl carbamic acid 4- Chlorobenzene base ester (mephenate), naphthalic anhydride and oxabetrinil (oxabetrinil).

Known some safeners are used as herbicide, and correspondingly, except have to noxious plant herbicide effect it Outward, the effect of cover crop plant is also acted as.

The weight of Herbicidal combinations and safener is than generally depending on the rate of application and the safener of herbicide Effect, and can change in a wide range, such as 90000:1-1:5000th, preferably 7000:1-1:1600、 Especially 3000:1-1:500th, particularly 1:100-20:In the range of 1.Safener can be with halosulfuronmethyl and benzene Thiophene acyl grass amine is prepared with finished product preparation or supplies and use in the form of with the tank mix of the Herbicidal combinations.

The present invention provides a kind of purposes of Herbicidal combinations in undesirable plant growth is prevented and treated.

The present invention provides a kind of Herbicidal combinations and is preventing and kill off broad-leaved section weeds, sedge weed, grassy weed The purposes of undesirable plant growth.

Herbicidal combinations of the invention to the economically important unifacial leaf of wide range and dicotyledonous harmful plants for example Broad leaved weed, grassy weed or sedge, including the species resistant to weeding active compound With excellent activity of weeding, the weeding active compound is such as glyphosate, Glufosinate, atrazine, Imidazolinone herbicide and sulfonylurea.

The monocotyledon weed and dicotyledonous weed flora that can be prevented and treated by Herbicidal combinations of the invention that can be mentioned that Some representational instantiations of group, but it is not limited to some kinds.

The example of the weed species of the herbicidal composition useful effect is, such as in monocotyledon weed with Subordinate, such as Echinochloa (Echinochloa spp.), Panicum (Panicum spp.), Poa L. (Poa spp), thousand Gold category (Leptochloa spp.), Brachiaria (Brachiaria spp.), knotgrass (Digitaria spp.), dog Tail grass category (Setaria spp.), Cyperus (Cyperus), Monochoria (Monochoria spp.), genus fimbristylis, Sagittaria (Sagittaria spp.), Eleocharis (Eleocharis spp.), Scirpus (Scirpus spp.), Waterplantain (Alisma spp.), leaf of bamboo Lepidium (Aneilema spp.), water screening spp (Blyxa spp.), eriocaulon buergerianum (Eriocaulon Spp.), Potamogeton (Potamogeton spp.) etc. all prevents and treats very well, particularly following kind：Water barnyard grass (Echinochloa oryzicola), Monochoria vaginalis (Monochoria vaginalis), yak grass (Eleocharis Acicularis), scouring rush's shape water chestnut (Eleocharis kuroguwai), difformed galingale herb (Cyperus difformis), water Nutgrass flatsedge (Cyperus serotinus), short arrowhead (Sagittaria pygmaea), alisma canaliculatum (Alisma Canaliculatum), firefly Lin (Scirpus juncoides).In the case of broadleaf weed, activity profile is extended to With subordinate, such as Polygonum (Polygonum spp.), section section Lepidium (Rotala spp.), Vandellia (Lindernia Spp.), Bidens (Bidens spp.), sphenoclea (Sphenoclea spp.), horsefly eye category (Dopatrium Spp.), Eclipta prostrata category (Eclipta spp.), Elatine ambigua (Elatine spp.), Gratiola (Gratiola spp.), mother Grass category (Lindernia spp.), ludwigia (Ludwigia spp.), Oenanthe (Oenanthe spp.), Ranunculus (Ranunculus spp.), damp chilly category (Deinostema spp.) etc..Particularly such as following kind：Barnyard grass (Echinolchloacrus-galli；ECHCG), China Sprangletop (Leptochloa chinensis； LEFCH), yellow nut nutgrass flatsedge (yellow nutsedge) (Cyperus esculentus；CYPES it is), special-shaped Nutgrass flatsedge (Cyperus difformis L), black nightshade (Solanum nigrum L.), Tong fiber crops (Abutilon theophrasti Medic), acalypha copperleaf (AcalyphaaustralisL), mexicana (Rotala indica), cusp flower (Sphenoclea Zeylanica), Procumbent Falsepimpernel (Lindernia procumbens), false loosestrife (Ludwigia prostrate), bog pondweed (Potamogeton distinctus), waterwort (Elatine triandra) and Chinese celery (Oenanthe javanica).

The present invention also provides a kind of Herbicidal combinations for preventing and treating undesirable plant growth in useful crop Purposes.

Herbicidal combinations of the invention can be used on the farmland of useful crop below such as cultivation：

Cereal crops, for example, include：

Cereal (granule cereal) such as wheat (Triticum aestivum) and small wheat crops such as durum wheat (T.durum), one grained wheat (T.monococcum), emmer wheat (T.dicoccon) and spelt (T.spelta), rye (Secale cereale), triticale (Tritiosecale), barley (Hordeum vulgare)；

Corn (Zea mays)；

Sorghum (such as sugar grass (Sorghum bicolour))；

Rice (Oryza (Oryza) such as paddy rice (Oryza sativa) and African paddy rice (Oryzaglaberrima)；

Sugarcane；

Beans (Legumes (pulse family (Fabaceae))), such as including soybean (Glycine max.), peanut (Arachis Hypogaea) (wrapped with legume crop such as pea (including pea (Pisum sativum), pigeonpea and cowpea), Kidney bean Include broad bean (Vicia faba), black mixed coloured cowpea category (Vigna) and black Phaseolus (Phaseolus)) and French beans (Lens culinaris (lens culinaris var.))；

Cruciferae, such as including Canola (cabbage type rape (Brassica napus)), rape (Brassica Napus), cabbage (B.oleracea var.), leaf mustard such as leaf mustard (B.juncea), Chinese cabbage (B.campestris), collapse Dish (B.narinosa), black mustard (B.nigra) and Mediterranean open country blister beetle (B.tournefortii)；And turnip (Brassica rapa var.)；

Other broad leaf crops, such as including sunflower, cotton, flax, linseed, sugar beet, potato And tomato；

TNV crops (TNV：Tree, kernel and rattan), such as including grape, oranges and tangerines, such as a kind of fruit, such as apple, pear, etc., apple And pears, coffee, American pistachios and oil palm, drupe, such as peach, almond, walnut, olive, cherry, Li He Apricot；

Turf, herbage and pasture；

Onion and garlic；

Bulb ornamental plant such as tulip and narcissus；

Coniferous tree and deciduous tree such as Pinus (Pinus), fir, Oak Tree, maple, Fructus Corni, hawthorn, Malus spectabilis With Rhamnus (Rhamnus) (sandlwood)；

Garden ornamental plant such as petunia, marigold, rose and toad's-mouth.

Herbicidal combinations of the invention be particluarly suitable for wheat, barley, rye, triticale, durum wheat, Rice, corn, sugarcane, sorghum, soybean, legume crop such as pea, Kidney bean and French beans, peanut, sunflower, Sugar beet, potato, cotton, Brassicas crop, such as rape, Canola, leaf mustard, cabbage and turnip, Turf, grape, such as a kind of fruit, such as apple, pear, etc., apple and pears, drupe, such as peach, almond, walnut, olive, cherry, Lee And apricot, oranges and tangerines, coffee, American pistachios, garden ornamental plant, such as rose, petunia, marigold, goldfish Grass, bulb ornamental plant such as tulip and narcissus, coniferous tree and deciduous tree such as Pinus, fir, Oak Tree, maple The growth of undesirable plant is prevented and kill off/prevented and treated in tree, Fructus Corni, hawthorn, Malus spectabilis.

Herbicidal combinations of the invention be best suitable for wheat, barley, rye, triticale, durum wheat, rice, Corn, sugarcane, sorghum, soybean, legume crop such as pea, Kidney bean and French beans, peanut, sunflower, sugar Garden beet, potato, cotton, Brassicas crop, such as rape, Canola, leaf mustard, cabbage and turnip, Turf, grape, drupe, such as peach, almond, walnut, olive, cherry, Li Hexing, oranges and tangerines and American pistachios In prevent and kill off/prevent and treat the growth of undesirable plant.

Especially crop for example wheat, barley, rye, rice, corn, sugarcane, sorghum, legume crop, Peanut, sunflower, sugar beet, potato, cotton, Brassicas crop, turf, grape, a kind of fruit, such as apple, pear, etc., core Really, in oranges and tangerines, coffee, American pistachios, garden ornamental plant, coniferous tree and deciduous tree, they can effectively prevent Broad leaved weed, grassy weed and sedge weed are controlled, and will not substantially produce injury to crop.

Herbicidal combinations of the invention are especially suitable for preventing and treating the growth of the undesirable plant in cereal crops.Example If Herbicidal combinations of the invention are to barnyard grass (Echinolchloacrus-galli；ECHCG), China Sprangletop (Leptochloa chinensis；), LEFCH yellow nut nutgrass flatsedge (yellow nutsedge) (Cyperus esculentus；CYPES), difformed galingale herb (Cyperus difformis L), black nightshade (Solanum nigrum L.), Tong fiber crops (Abutilon theophrasti Medic), the control of acalypha copperleaf (AcalyphaaustralisL) show bright Aobvious synergy.

Herbicidal combinations of the invention also can admirably prevent and treat the undesirable plant in non-crop area Growth.Non- crop area Ru Lu, railway, meadow, utility line, especially in the region that there are trees Undesirable plant growth.

Herbicidal combinations of the invention can also be used for following crop plants, and the crop plants are due to genetic engineering Or breeding and it is resistant to one or more herbicide, due to genetic engineering or breeding to one or more disease Substance, such as plant pathogenic fungi are resistant or resistant to insect infestations due to genetic engineering or breeding. The suitable crops for being, for example, to tolerate synthetic auxin, preferably corn, wheat, sunflower, rice, Canola, rape, soybean, cotton and sugarcane, or due to introducing gene to Bt toxin by genetic modification Tolerate the crops of some insect infestations.

A kind of Herbicidal combinations are used to be prevented and treated in useful crop the purposes of undesirable plant growth, described to remove Careless composition is tolerated by the useful crop.

Herbicidal combinations of the invention are highly applicable to optionally prevent and treat the undesirable plant in cereal crops Growth, particularly preferred paddy rice.The rice crop is included in the institute of most diverse Rice under Condition strain cultivation Form is possible to, such as dry land is cultivated, nonirrigated farmland is cultivated or paddy field is cultivated, wherein it can be natural (drop to irrigate Rain) and/or artificial (pouring).Paddy rice for this purpose can be the conventional seed cultivated, hybrid seed or The seed (being obtained by mutation or transgenosis) of resistant-at least tolerance, its can by indica type or round-grained rice type kind or Its cenospecies is derived.

The present invention provides a kind of method for preventing and treating undesirable plant growth, by Herbicidal combinations of the invention Halosulfuronmethyl and mefenacet collectively or individually are applied to undesirable plant or its growth place.

A kind of method for preventing and treating undesirable plant growth, including：I () is before undesirable plant germination (before bud)；(ii) after undesirable plant germination (after bud)；Or (iii) is at (i) and (ii), The Herbicidal combinations of the invention of herbicidally effective amount are applied to undesirable plant or its growth place.It is preferred that Also to the undesirable plant that has germinateed, (such as broad leaved weed, grass family is miscellaneous before undesirable plant germination Grass, sedge or undesirable crop plants) be administered, and with the growth period of the crop of sowing/plantation It is unrelated.

It is a kind of to prevent and treat the method for undesirable plant growth, including make undesirable plant or its growth place with The Herbicidal combinations of the invention of herbicidally effective amount are contacted or to this hair in soil or water using herbicidally effective amount Bright Herbicidal combinations are preventing from being not intended to the germination or growth of plant.

There is collaboration to make for halosulfuronmethyl of the Herbicidal combinations of the invention comprising effective dose and mefenacet With.When common or synergy can be observed when halosulfuronmethyl and mefenacet almost is administered simultaneously；When When the different time halosulfuronmethyl and mefenacet is applied respectively, synergy is also observed that； Can be applied after applying then bud before for example first bud with sequential application halosulfuronmethyl and mefenacet, or Applied after first early stage bud, then applied after mid-term or later stage bud.Chlorine is preferably administered simultaneously jointly or almost herein Pyrazosulfuron and mefenacet, and particularly preferably common use.

If Herbicidal combinations of the invention are applied into soil surface before germination, weeds are entirely prevented Seedling germinates, or weed growth is to cotyledon period, but then it just stops growing, and it is final at two weeks extremely It is completely dead after surrounding.

If the reactive compound to be applied to the green parts of plant after germination, growth equally can be at place Just drastically stop in suitable short time after reason, and growth period of ruderal plant when being maintained at time of application point, It is relatively early by this way and constantly eliminate by being harmful to crop or it is completely dead after some time The competition that the weeds of plant produce.For paddy rice, the Herbicidal combinations can be also applied in water, then It passes through soil, bud and root and is absorbed.

When halosulfuronmethyl and mefenacet common use, there is synergy.Here, the combination Expected summation of the activity of thing higher than each herbicidal activity applied.Synergy makes rate of application to reduce, and prevents Control broad leaved weed, grassy weed and the sedge of more wide range, herbicide effect works faster, when continuing Between it is longer, preferably prevent and treat and can widen the phase of administration by applying just to have noxious plant only once or several times. The dosage and halosulfuronmethyl and the effective dose of mefenacet used in the Herbicidal combinations are all adjustable Save to relatively low level, so that its effect to soil is reduced to minimum degree.This causes weeding of the invention Composition can not only be applied to sensitive crop, also almost avoid underground water pollution.Herbicidal combination of the present invention Rate of application needed for thing causes active component is significantly decreased.

Above-mentioned characteristic and advantage for control of weeds with keep agricultural/forestry/garden crop or greenery patches/meadow from Undesirable competitive plant, so as to ensure and/or increase useful crop yield water from the angle of quality and quantity Put down what is be a need for.For the characteristic, this Herbicidal combinations have significantly surmounted the technology of this area Present situation.

The present invention also provides a kind of method for preventing and treating undesirable plant growth, including by weeding group of the invention Compound is applied in the presence of other reproductive parts of the plant, the seed of useful crop or useful crop of useful crop With.It is preferred that by Herbicidal combinations of the invention before before useful crop is sowed or germinates or after planting germinateing directly Connect the location for being applied to plant or plant.

The present invention also provides a kind of method for preventing and treating undesirable plant, preferably in useful crop plants, spy It is not that undesirable plant is prevented and treated in cereal crops, the method is included as the work of Herbicidal combinations of the present invention Property composition halosulfuronmethyl and mefenacet, for example, be applied to plant (such as undesirable collectively or individually Plant, such as unifacial leaf or dicotyledonous broad leaved weed, grassy weed, sedge or undesirable crop Plant), seed (such as caryopsis, seed or vegetative propagation organ, such as stem tuber and the branch portion with bud), or It is applied to the region (region of such as cultivation, it can also be covered with water) of plant growth.A kind of herbicide can be another Before a kind of herbicide, it is applied to the region of plant, seed or plant growth afterwards or concurrently and (for example plants The region of training).

Herbicidal combinations of the invention can be by using technology well known to those skilled in the art in a usual manner Using.Suitable technology includes spraying, atomization, dusting, broadcasts sowing or pour.Using type with well-known Mode depend on desired purpose；Under any circumstance the technology it is ensured that active component of the present invention it is optimal May distribution.

If active component can not be well tolerable by some crops, can be removed by spraying apparatus directed spraying Careless composition is so that they to the greatest extent may be used when reaching and being grown in the following leaf for being not intended to plant or exposed soil Can tactiosensible crops less.

The inventive method is most preferably for undesirable plant or its growth place preventing and treating plant growth area or will use Weeds in the region of long-term cropping.When plant growth area is applied to, amount of application should be enough to control weeds Grow but serious permanent injury will not be produced to crop.

" undesirable plant " is understood to mean that the local all plants for being grown in being not intended to its growth. These can be, for example, noxious plant (such as unifacial leaf or broadleaf weed, grassy weed, Cyperaceae plant Thing or undesired crop plants), including for example to some weeding active compounds (for example glyphosate, Glufosinate, Atrazine, imidazolinone herbicide and sulfonylurea) resistant those plants.

Can be by being usually used in the various application processes of rice herbicide come using Herbicidal combinations of the invention.It is special Not preferably, it is applied by spraying administration and/or by impregnating administration.Impregnate apply in, using when, The water in paddy field had covered ground up to 3-20cm.Then Herbicidal combinations of the invention are placed directly within paddy field Water in.Worldwide, the paddy rice for being mainly used in direct sowing is applied in spraying, and is impregnated and applied main For the paddy rice transplanted.

The present invention also provides a kind of Herbicidal combinations, and active component is made up of halosulfuronmethyl and mefenacet, Also include filler and/or surfactant.In the Herbicidal combinations, the halosulfuronmethyl and benzene thiophene acyl The total amount of careless amine accounts for the Herbicidal combinations 5%-90% by weight, preferably 10%-80%, more preferably 15%-70%.

The total amount of the halosulfuronmethyl and mefenacet can also account for the Herbicidal combinations by weight 5%th, 8%, 10%, 12%, 15%, 18%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 60%th, 70%, 75%, 80%, 85%, 90%.

Herbicidal combinations of the invention can be converted into conventional formulation, for example wettable powder, missible oil, suspending agent, Microcapsules, microemulsion, aqueous emulsion, suspended emulsion, water dispersible granules, aqua, microcapsule suspension-suspendinagent agent, Ultra low volume liquids, tablet, micro-capsule granules, granule.

According to the present invention, term " filler " refers to can be combined with active component or combines to make it easier for It is administered to the natural or synthetic organic or inorganic compound of object (such as plant, crop or careless class).Cause This, the filler is preferably inert, at least should be agricultural acceptable.The filler can be solid Body or liquid.

Applicable solid carrier is：Such as phyteral powdery type (such as soy meal, starch, grain dust, wood Powder, bark powder, sawdust, walnut shell powder, wheat bran, cellulose powder, coconut husk, corncob and tobacco stem Particle, extract the residue etc. after plant essence), clay class (such as kaolin, bentonite, acid china clay etc.), Talcum powder class.Silica (such as diatomite, silica sand, mica, aqueous silicic acid, calcium silicates), activated carbon, (the examples such as natural mineral matter class (float stone, attapulgite and zeolite etc.), firing diatomite, sand, plastics medium Such as polyethylene, polypropylene, polyvinylidene chloride), potassium chloride, calcium carbonate, the inorganic mineral of calcium phosphate etc. Chemical fertilizer, the clay fertilizer of property powder, ammonium sulfate, ammonium phosphate, urea, ammonium chloride etc., these materials can be with It is used alone or two or more is mixed.

Applicable liquid-carrier can be selected in llowing group of materials, such as water, alcohol type (such as methyl alcohol, second Alcohol, isopropanol, butanol, ethylene glycol etc.), ketone (such as acetone, methyl ethyl ketone, diisobutyl first Ketone, cyclohexanone etc.), ethers (such as ether, dioxs, methylcellulose, tetrahydrofuran etc.), fat Race's hydrocarbon (such as kerosene, mineral oil etc.), aromatic hydrocarbons class (for example benzene, toluene, Dimethylbenzene, solvent naphtha, alkylnaphthalene, chlorinated aromatic hydrocarbons, chlorinated aliphatic hydrocarbon, chlorobenzene etc.), halogenated hydrocarbon Class, amide-type, sulfone class, dimethyl sulfoxide (DMSO), mineral and vegetable oil, animal oil etc..

Applicable surfactant has the emulsifying agent with ion or non-ionic nature, dispersant or wetting agent, Or the mixture of these surfactants.These surfactants it is suitable have AEO, It is the phosphate of polyoxyethylene alkylaryl ether, polyoxyethylene higher fatty acid esters, polyoxyethylene alcohol or phenol, many The fatty acid ester of first alcohol, alkylaryl sodium sulfonate, naphthalene sulfonic acid polymer, lignosulfonates, macromolecule comb shape Dendritic copolymer, butyl naphthalene sulfonate, alkylaryl sulfonates, sodium alkylsulfosuccinates, grease, Polyacrylate, the protein hydrolysate such as fatty alcohol and ethylene oxide condensate, alkyltaurate.Properly Oligosaccharide thing or polymer, such as based on single vinyl monomer, acrylic acid, polyoxyethylene or polyoxy third Alkene or itself and such as combination of (polynary) alcohol or (polynary) amine.When the one kind in reactive compound and/or A kind of water insoluble in inert carrier and when being applied in water, it is necessary to there is surfactant.Live on surface The ratio of property agent is the 5%-40% of Herbicidal combinations of the invention.

If appropriate, Herbicidal combinations of the invention can also exist other addO-on therapies, such as protecting colloid, Adhesive, adhesive, thickener, thixotropic agent, bleeding agent, stabilizer, screening agent, sequestering agent, Complex-forming agents.Generally, described active component can with any solid for being conventionally used for preparation purpose or Liquid additive is combined.

The Herbicidal combinations of the invention can be by known way by the active component and following material At least one is mixed：Liquid-carrier or solid carrier, emulsifying agent, dispersant, wetting agent and/or protection Colloid, adhesive, adhesive, thickener, thixotropic agent, bleeding agent, stabilizer, screening agent, multivalence chela Mixture, complex-forming agents, water and other processing aids.

Herbicidal combinations of the invention can be formulated as example single component by known method, if appropriate, with Other reactive compounds, additive and/or common dosage forms auxiliary agent-mix preparation, then by said composition with normal Applied after rule mode dilute with water；Or be total to water by by each component individually prepared or part is individually prepared A barrel mix formulation is formulated as with dilution.Can individually be prepared with separate administration or the independent each component prepared in part. Also many parts can be divided to use the herbicide or Herbicidal combinations (sequential application), for example seed dressing is applied or broadcast first Before kind/plantation pre-treatment or bud before apply followed by carry out applying after bud or early stage bud after apply, in then carrying out Applied after phase or later stage bud.Preferably it is used in conjunction with herein or almost uses the active ingredient of the composition simultaneously Thing, particularly preferred common use.

According to formulation properties, can with it is anticipated that object and popular environment select application process, such as blade face, It is impregnated with, sprays, dusting, scatters and selected.

Halosulfuronmethyl and mefenacet can with itself, its dosage form or by further dilution by it The type of service of preparation is applied, such as ready to use solution, suspending agent, emulsion, pulvis, paste and granule. Usual manner can be used, for example, applies them by pouring, spraying, be atomized or broadcast sowing.

Herbicidal combinations of the invention have the form for being more easy to use, because the amount of the component has been optimal Ratio.Additionally, the auxiliary agent in preparation can each other be adjusted and optimized.

Example of formulations

The mefenacet suspending agent of 1 6% halosulfuronmethyl of embodiment+60%

The each components such as active component, dispersant, wetting agent and water are well mixed according to the ratio of formula, are passed through The suspending agent of the mefenacet of 6% halosulfuronmethyl+60% is obtained after grinding and/or high speed shear.

The mefenacet wettable powder of 2 2% halosulfuronmethyl of embodiment+10%

Active component, various auxiliary agents and filler etc. are mixed by the proportional components of formula, through ultrafine crusher powder After broken, that is, obtain the wettable powder of the mefenacet of 2% halosulfuronmethyl+10%.

The mefenacet wettable powder of 3 10% halosulfuronmethyl of embodiment+10%

Active component, various auxiliary agents and filler etc. are mixed by the proportional components of formula, through ultrafine crusher powder After broken, that is, obtain the wettable powder of the mefenacet of 10% halosulfuronmethyl+10%.

The mefenacet water dispersible granules of 4 10% halosulfuronmethyl of embodiment+60%

Active component, dispersant, wetting agent, disintegrant and filler are well mixed in the ratio of formula, are passed through Air-flow crushing into wettable powder is crossed, a certain amount of water mixing extruding is added and is made material.After drying screening To the water dispersible granules of the mefenacet of 10% halosulfuronmethyl+60%.

The mefenacet missible oil of 5 2% halosulfuronmethyl of embodiment+30%

Mentioned component is proportionally prepared, homogeneous phase is uniformly mixing to obtain, 2% halosulfuronmethyl is obtained The missible oil of+30% mefenacet.

The mefenacet suspension emulsion of 6 10% halosulfuronmethyl of embodiment+10%

By halosulfuronmethyl, methyl naphthalene sulfonate formaldehyde condensate, corn oil is ground and/or high speed shear after Obtain halosulfuronmethyl suspending agent；By mefenacet, SOLVESSO^TM100th, ethoxylated castor oil is mixed Conjunction is uniformly mixing to obtain mefenacet missible oil；The mefenacet missible oil that will be obtained is added to halosulfuronmethyl In suspending agent, the suspension emulsion of the mefenacet of 10% halosulfuronmethyl+10% is obtained.

The mefenacet wettable powder of 7 2% halosulfuronmethyl of embodiment+50%

Said components are mixed in proportion, and ground, crushed, be prepared into the benzene thiophene of 2% halosulfuronmethyl+50% The wettable powder of acyl grass amine.

The mefenacet water dispersible granules of 8 5% halosulfuronmethyl of embodiment+50%

Halosulfuronmethyl, mefenacet active component, dispersant, wetting agent, disintegrant and filler are pressed The ratio of formula is well mixed, by air-flow crushing into wettable powder；A certain amount of water mixing is added to squeeze Pressure makes material.The water dispersible granules of the mefenacet of 5% halosulfuronmethyl+50% are obtained after drying screening.

The mefenacet aqueous emulsion of 9 1% halosulfuronmethyl of embodiment+5%

Oil phase：

Water phase：

The sodium salt 1% of the naphthalene sulfonic acids-formaldehyde condensation products of sulfonation

Water complements to 100%

Halosulfuronmethyl, mefenacet are dissolved in methyl oleate, add ethoxylated castor oil to obtain Oil phase；According to formula by the sodium salt of the naphthalene sulfonic acids-formaldehyde condensation products of sulfonation, water, well mixed water phase is obtained； Oil phase addition water is mutually obtained the aqueous emulsion of the mefenacet of 1% halosulfuronmethyl+5% under agitation.

The mefenacet wettable powder of 10 5% halosulfuronmethyl of embodiment+25%

Said components are mixed in proportion, and ground, crushed, be prepared into the benzene thiophene of 5% halosulfuronmethyl+25% The wettable powder of acyl grass amine.

The mefenacet coated granule of 11 1% halosulfuronmethyl of embodiment+10%

In a mixer, by levigate active component even spread to the carrier soaked by polyethylene glycol, with This mode can obtain the dust-free coated granules agent of the mefenacet of 1% halosulfuronmethyl+10%.

The mefenacet wettable powder of 12 1% halosulfuronmethyl of embodiment+10%

Said components are mixed in proportion, and ground, crushed, be prepared into the benzene thiophene of 1% halosulfuronmethyl+10% The wettable powder of acyl grass amine.

The mefenacet of 13 5% halosulfuronmethyl of embodiment+25% extrudes granule

Active component is mixed and ground with auxiliary agent, mixture is soaked with water.The mixture is extruded, then Dry in the air stream, obtain the extrusion granule of the mefenacet of 5% halosulfuronmethyl+25%.

The mefenacet seed coat agent of 14 1% halosulfuronmethyl of embodiment+5%

Above-mentioned each component is mixed in proportion, and through being sanded, is prepared into the benzene thiophene of 1% halosulfuronmethyl+5% The seed coat agent of acyl grass amine.

The mefenacet microcapsule suspension-suspendinagent agent of 15 2% halosulfuronmethyl of embodiment+15%

By PAPI, mefenacet, SOLVESSO^TM100 oil phases for being formed add PE/64 containing Synperonic The aqueous solution in, formed emulsion.Then heat and be incubated and add catalyst reaction 2 hours at 50 DEG C. The microcapsules of mefenacet is obtained after cooling.

Synperonic PE/64, dispersant LFH, defoamer, urea, halosulfuronmethyl and water are mixed in proportion Close uniform, and through being sanded, be prepared into suspending agent.

The mefenacet microcapsules that will be obtained is added in the suspending agent of halosulfuronmethyl, is uniformly mixing to obtain 2% The microcapsule suspension-suspendinagent agent of the mefenacet of halosulfuronmethyl+15%.

The mefenacet suspended emulsion of 16 5% halosulfuronmethyl of embodiment+25%

Mefenacet is dissolved in SOLVESSO^TMIn 200, ethoxylated castor oil is added, obtain benzene The missible oil of thiophene acyl grass amine.

By halosulfuronmethyl, AEO sulfosuccinic acid monoesters disodium, above-mentioned each component press than Example is well mixed, and through being sanded, is prepared into suspending agent.

Oil phase containing mefenacet is added in suspending agent containing halosulfuronmethyl, 5% halosulfuronmethyl is obtained The suspended emulsion of+25% mefenacet.

The mefenacet missible oil of 17 1% halosulfuronmethyl of embodiment+5%

Above-mentioned each component is mixed, is stirred to transparent homogeneous phase is obtained, obtain the benzene thiophene of 1% halosulfuronmethyl+5% The missible oil of acyl grass amine.

The mefenacet oil-suspending agent of 18 5% halosulfuronmethyl of embodiment+15%

The each components such as active component, dispersant, wetting agent and methyl oleate are mixed equal according to the ratio of formula It is even, the oil-suspending agent of the mefenacet of 5% halosulfuronmethyl+15% is obtained after ground and/or high speed shear.

The mefenacet of 19 10% halosulfuronmethyl of embodiment+90%

Halosulfuronmethyl 10%

Mefenacet 90%

Halosulfuronmethyl, mefenacet are proportionally well mixed.

The isoxadifen of+30% mefenacet of 20 5% halosulfuronmethyl of embodiment+65%

Halosulfuronmethyl 5%

Mefenacet 30%

Isoxadifen 65%

Halosulfuronmethyl, mefenacet, isoxadifen are proportionally well mixed.

The mefenacet of 21 20% halosulfuronmethyl of embodiment+80%

Halosulfuronmethyl 20%

Mefenacet 80%

Halosulfuronmethyl, mefenacet are proportionally well mixed.

The cloquitocet_mexyl of+60% mefenacet of 22 15% halosulfuronmethyl of embodiment+25%

Halosulfuronmethyl 15%

Mefenacet 60%

Cloquitocet_mexyl 25%

Halosulfuronmethyl, mefenacet, cloquitocet_mexyl are proportionally well mixed.

The following examples explanation present invention

Evaluation to activity of weeding after the bud of Herbicidal combinations in greenhouse

Under greenhouse experiment, the seed of required test plants species is planted in seedling alms bowl.Use standard soil As cultivation matrix.When plant reaches the 3rd to four leaf periods, the shape by herbicide individually or to combine Formula processes blade.Each treatment is repeated 4 times.

According to constant weight percentage reagent preparation：1st, halosulfuronmethyl；2nd, mefenacet；3rd, chlorine pyrrole Sulfometuron Methyl+mefenacet；Afterwards by above-mentioned each reagent dilute with water, medicament dilution is obtained.

Investigation method：

Target damage symptoms and growth inhibition situation are estimated after test process 21d, and claim aerial part fresh weight, Calculate fresh weight inhibition (%).

Evaluation to the mixed synergistic effect for applying middle display of two or more herbicidal active components is to be based on “CalculationSynergistic and Antagonistic Response of Herbicide What Colby ' the s methods described in Combinations " (Weeds 15/1 (1967), S.R.Colby) determined.

In formula, X be halosulfuronmethyl with certain dosage when alone to the fresh weight inhibition of target weeds.

Y be mefenacet with certain dosage when alone to the fresh weight inhibition of target weeds.

E₀To the reason of target weeds fresh weight inhibition during for halosulfuronmethyl and two kinds of pharmacy mix of mefenacet By value.

To the reality of target weeds fresh weight inhibition when E is halosulfuronmethyl and two kinds of pharmacy mix of mefenacet Measured value.

If the actual control of weeds rate (E) observed in biologic test exceedes uses Colby ' s methods Desired value (the E being calculated₀), then it represents that the effect of Herbicidal combinations is more than the summation of each agent effectiveness, this Mean that composition has synergistic effect.

Table 1 shows the Herbicidal combinations of halosulfuronmethyl+mefenacet to barnyard grass in greenhouse (after administration 21 days) synergistic activity.

Table 1

Table 2 shows the Herbicidal combinations of halosulfuronmethyl+mefenacet to difformed galingale herb in greenhouse The synergistic activity of (Cyperus difformis L) (after administration 21 days).

Table 2

Table 3 shows the Herbicidal combinations of halosulfuronmethyl+mefenacet to China Sprangletop in greenhouse The synergistic activity of (after administration 21 days).

Table 3

By the number of table 1, table 2 and table 3 it was demonstrated that in the control to weeds, halosulfuronmethyl+benzene The herbicide performance cooperative effect of the composition of thiophene acyl grass amine.

Safety effect

Rice paddy seed is directly sowed in silt soil, sowing uses herbicide treatment after 12 days.In this stage, By single halosulfuronmethyl, mefenacet, halosulfuronmethyl+mefenacet composition, apply To test plant.After dispenser 7-10 days, the phytotoxicity for evaluating herbicide to crop is measured using percentage. 100% represents that test plant is completely dead, and 0% represents plant-less toxicity effect.

Table 4

It can be seen from Table 4 that, the combination of halosulfuronmethyl and mefenacet improves halosulfuronmethyl Or the compatibility of mefenacet and crops, reduce or prevent halosulfuronmethyl, mefenacet to its Caused by other reproductive parts of the plant, the seed of useful crop or useful crop of the useful crop for the treatment of Infringement.

In sum, Herbicidal combinations of the invention, activity when preventive effect is administered alone better than each component, medicine Its combination of effect verification experimental verification prevents and kill off the crop fields grass with synergistic effect, expansion control of weeds spectrum, a dispenser Section, broad leaved weed and sedge weed, reduce spraying times, reduce cost accounting, slow down Weed Resistance Produce, it is good to crop safety, meet the security requirement of pesticidal preparations.

Claims (14)

1. a kind of Herbicidal combinations, it is characterised in that its active component is by halosulfuronmethyl and mefenacet Composition；The weight proportion of the halosulfuronmethyl and mefenacet is 1:1-1:100, preferably 1:1-1:50, More preferably 1:1-1:40, it is further preferably 1:5-1:30, more preferably 1:5-1:25, most preferably 1:5-1:20.

2. Herbicidal combinations according to claim 1, it is characterised in that the Herbicidal combinations are also wrapped Include filler and/or surfactant.

3. Herbicidal combinations according to claim 1, it is characterised in that the agent of the Herbicidal combinations Type is wettable powder, missible oil, suspending agent, microcapsules, microemulsion, aqueous emulsion, suspended emulsion, moisture Shot agent, microcapsule suspension-suspendinagent agent, ultra low volume liquids, tablet or granule.

4. Herbicidal combinations according to claim 1, it is characterised in that the halosulfuronmethyl and benzene The total amount of thiophene acyl grass amine accounts for the Herbicidal combinations 5%-90% by weight, preferably 10%-80%, enters one Walk preferred 15%-70%.

5. Herbicidal combinations according to claim 1, it is characterised in that the Herbicidal combinations are also wrapped Safener is included, the safener is study on brassinolide, benoxacor, fenclorim, dichlormide, pyrazoles solution At least one in careless ester or isoxadifen, the safener is relative to halosulfuronmethyl and mefenacet The weight proportion of total amount is 1:100-20:1.

6. purposes of the Herbicidal combinations according to claim 1 in undesirable plant growth is prevented and treated.

7. Herbicidal combinations according to claim 1 are in preventing and treating broad-leaved section weeds, sedge weed or standing grain Purposes in the undesirable plant growth of undergraduate course weeds.

8. Herbicidal combinations according to claim 1 are preventing and treating barnyard grass (Echinolchloacrus-galli； ECHCG), China Sprangletop (Leptochloa chinensis；) and difformed galingale herb (Cyperus LEFCH Difformis L) purposes in undesirable plant growth.

9. Herbicidal combinations according to claim 1 preventing and treating wheat, corn, sugar beet, sugarcane, Cotton, paddy rice, beans, flax, barley, oat, rye, triticale, rape, potato, broomcorn millet, Broad-leaved section weeds, sedge weed in herbage, greenery patches or lawn, in the Zhong Huofei crop areas of planting fruit trees garden Or the purposes in the undesirable plant growth of grassy weed.

10. a kind of method for preventing and treating undesirable plant growth, it is characterised in that methods described includes：(i) Before undesirable plant germination；(ii) after undesirable plant germination；Or (iii) at (i) and (ii) when, the Herbicidal combinations described in claim 1 are applied to undesirable plant or its growth place.

A kind of 11. methods for preventing and treating undesirable plant growth, it is characterised in that by described in claim 1 Herbicidal combinations active component halosulfuronmethyl and mefenacet collectively or individually be applied to and be not intended to Plant or its growth place.

A kind of 12. methods for preventing and treating undesirable plant growth, it is characterised in that by described in claim 1 Herbicidal combinations useful crop plant, the seed of useful crop or useful crop other reproductive parts In the presence of apply.

13. methods according to claim 12, it is characterised in that by the weeding described in claim 1 Composition is directly applied to the institute of plant or plant before before useful crop is sowed or germinates or after planting germinateing On ground.

A kind of 14. methods of the undesirable plant growth of preventing and treating, including make undesirable plant or its growth field Contacted with the Herbicidal combinations described in the claim 1 of herbicidally effective amount or in soil or water apply weeding Herbicidal combinations described in the claim 1 of effective dose are preventing from being not intended to the germination or growth of plant.