CN102177900B - Formula and using method of novel bactericide for preventing and treating rice blast - Google Patents
Formula and using method of novel bactericide for preventing and treating rice blast Download PDFInfo
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- CN102177900B CN102177900B CN 201110070400 CN201110070400A CN102177900B CN 102177900 B CN102177900 B CN 102177900B CN 201110070400 CN201110070400 CN 201110070400 CN 201110070400 A CN201110070400 A CN 201110070400A CN 102177900 B CN102177900 B CN 102177900B
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- tricyclazole
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- tebuconazole
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Abstract
防治稻瘟病的新型杀菌剂配方及其使用方法，属于高效、低毒杀菌剂三环唑(tricyclazole)、戊唑醇(tebuconazole)、苯醚甲环唑(difenoconazole)三元有效成分的相容性杀菌剂配方，通过加工成制剂对水喷雾、浸种或撒施，防治水稻稻瘟病。该杀菌剂具持效期长，保护作用、治疗作用和抗产孢作用兼顾，促进水稻健康生长，显著提高水稻结实率和千粒重，及治理病原菌抗药性等优点。A new type of fungicide formula for preventing and treating rice blast and its application method, belonging to the compatibility of three active ingredients of tricyclazole, tebuconazole, and difenoconazole The fungicide formula is processed into a preparation to spray, soak or spread the seeds with water to prevent and control rice blast. The fungicide has the advantages of long-lasting effect, protective effect, therapeutic effect and anti-sporulation effect, which can promote the healthy growth of rice, significantly improve the seed setting rate and thousand-grain weight of rice, and control the drug resistance of pathogenic bacteria.
Description
One, technical field
Disinfecting agent prescription and the using method thereof of control rice blast belong to efficient, low toxicity bactericide tricyclazole, Tebuconazole, the compatibility bacteriocide formula of Difenoconazole ternary active ingredient and the using method of process preparation thereof.
Two, technical background
Characteristics such as azoles fungicide has wide, the active height of fungicidal spectrum, sterilization speed is fast, the lasting period is long, interior suction conductivity is strong, principal item has Tebuconazole, Difenoconazole, triazolone, Triadimenol, own azoles alcohol, propiconazole, nitrile bacterium azoles, Flutriafol, Prochloraz etc.The mechanism of action of azoles fungicide is to suppress the biosynthesis of ergosterol, destroys the cell membrane function of pathogen, finally causes cell death, thereby plays protection and therapeutic action.Azoles fungicide can effectively be prevented and treated the caused fungal diseases of plants of sac fungi, basidiomycetes and imperfect fungus.Tens of kinds of crop pests such as paddy rice, cereal crop, vegetables, fruit tree been have successfully have been prevented and treated both at home and abroad with this series bactericidal agent.The Application and Development of this class new type bactericide is for the invention provides material base.
Rice blast is the important disease that hazard rice is produced for a long time, and its pathogen can be infected the host in arbitrary stage of paddy growth, causes economic loss.At present China uses mainly that toxicity is medium, bactericide such as the tricyclazole that has only prevention effect and sulphur prevent and treat, wherein tricyclazole is to synthesize by the melanin that the inhibition Pyricularia oryzae adheres in the spore, hinder rice blast fungus and invade in the pin main body, reach the purpose of specialization control rice blast.Yet Pyricularia oryzae is invaded under the invisible situation of naked eyes to visible disease symptom and is occurred, and also needs 5-7 days time under optimum, and the germ tube of germ spore germination runs into wound and also can infect, and need not to grow to form appresorium.Therefore, usually use tricyclazole control rice blast separately because service time partially evening or behind the storm that easily makes paddy rice generation wound result of use not good.Also there is the problem that activity is low, the later stage is used easy poisoning in sulfur preparation commonly used.Therefore, according to the rice blast pests occurrence rule with prevent and treat situation, development is efficient, the new type bactericide of wide spectrum, low toxicity, safety meets the Rice Production demand.
Three, summary of the invention
Technical problem the object of the invention is to research and develop disinfecting agent prescription and the using method thereof of control rice blast, the technical problem underlying of its solution be control rice blast effect significantly, medication period and application method is various, and can delay development of drug resistance, the good bacteriocide formula of active ingredient compatibility and easy using method are provided.
Selection of technical scheme is high to the Pyricularia oryzae activity, the longevity of residure is long, mechanism of action is different, can bring into play activity in the disease cycle different phase, different low toxicity, low-residual bactericide tricyclazole, Tebuconazole and the Difenoconazole of interior suction conductive performance be filled a prescription and be screened and field trial, obtain the prescription of performance summation action or synergistic effect, and be processed into the preparation of different user demands.
Beneficial effect the present invention is directed to existing production and goes up the tricyclazole that uses and can only prevent and treat rice blast and can not prevent and treat other diseases, have only splendid protective effect and do not have therapeutic action; triazole bactericidal agent has wide spectrum, high activity and splendid therapeutic action and anti-sporification; and Tebuconazole is inhaled in conduction and the Difenoconazole in having fast and is absorbed and retain the characteristics of staying; fill a prescription and screen and field trial, obtain tricyclazole: Tebuconazole: the weight ratio of Difenoconazole is 1: 0.04～0.8: 0.04～0.8 the useful prescription of composite bactericide.Carry out indoor and field trial and prove that this invention compares with other agricultural chemicals and have following beneficial effect by making different preparations.
1. the invention belongs to the prescription of ternary built bactericide, have compatibility, enlarged antimicrobial spectrum, to Different Kinds of Pathogens fungi performance summation action and synergistic effect, not only can prevent and treat rice blast, can also doublely control banded sclerotial blight, false smut and leaf smut, reduce labour and agricultural chemicals use cost.
2. this prescription has trihydroxy naphthols reductase, tetrahydroxy naphthols reductase and 14 α-demethylase to the molecular target of Pyricularia oryzae effect, has increased action site, can delay the pesticide resistance generation and prevent and treat the pesticide resistance disease.
3. tricyclazole has splendid protective effect in this prescription; Tebuconazole and Difenoconazole have splendid therapeutic action and anti-sporification; each stage in disease cycle all can bring into play active; make the service time of this bactericide looser, overcome the difficult problem missing best administration time in the past and can lose control efficiency.
4. three of this invention kinds of bacteriocide formulas have the characteristic that is absorbed by paddy rice fast, can resist rain drop erosion and photodissociation, and the longevity of residure is long.
5. tricyclazole and Tebuconazole conductive performance in the paddy rice body are good in the bactericide that should invent, with transpiration to paddy rice top and blade tip transporting, and the poor mobility of Difenoconazole can be trapped in paddy rice middle and lower part and dispenser position, has good distributivity in the paddy rice body.Therefore can use by methods such as soaking seed, spray and spread fertilizer over the fields, the effect of preventing and treating disease significantly improves.
6. the inventor studies have shown that the triazole bactericidal agent Tebuconazole has good plant physiology regulating action, makes that plant is resistant to lodging, chlorophyll increase, peroxidation decline, ripening rate and thousand kernel weight increases, and improves output.
Four, specific embodiments and effect
(1) prescription screening
The present invention is that material, Pyricularia oryzae are object with the rice seedling, carries out the prescription screening of compound drug.After the tricyclazole of design, Tebuconazole, difenoconazole technical material dissolve with methyl alcohol, be designed to 1: 1: 1～1: 0.04: 0.08 by weight (seeing Table 1), after each proportioning is diluted to the series concentration medicine liquid spray rice seedling 24h of 4～5 leaf phases of processing with the aqueous solution that contains 0.05% polysorbas20, adopt foliar spray method inoculation magnaporthe grisea spore suspension (10
5Individual/ml).25 ℃ of maintenances in the 24h of inoculation back, 100% relative moisture and dark condition, the indoor cultivation under the photoperiod in 80% relative moisture and 12h later on.Inoculation back 7d investigation incidence.Calculate virulence regression equation and EC
50Value.Calculate the interaction of mixture according to the Wadley method.Select the proportioning of coefficient of synergism (SR) value 〉=1.5 for use.Select wherein six proportionings and carry out appropriate dosage forms processing and field trial.
Table 1 live body prescription The selection result
(2) preparation of tricyclazole Tebuconazole Difenoconazole wetting powder (WP) and water dispersible granules (WG)
Make 40% and 44% tricyclazole Tebuconazole Difenoconazole wetting powder (WP) and 5%, 10% water dispersible granules (WG) respectively by E, G, I, J, L and N prescription in the table 1.
(3) field operation technique and effect thereof
1.44% tricyclazole Tebuconazole Difenoconazole G prescription (1: 0.125: 0.125) WP control panicle blast
Test arrangement is in Hou Xin village, Hua Yang town, Jurong City, Jiangsu Province, and this area belongs to rice blast chronic illness district, medicaments such as iprobenfos is developed immunity to drugs through monitoring.Stubble is wheat experimental field, and the test region soil types is the diligent earth of paddy rice, pH value 7.5, and experimental field the field piece is smooth, and irrigation canals and ditches are supporting.Rice varieties is fragrant numerous 103.Before the dispenser, the leaf pest are very light, and disease refers to be about 1 grade.Paddy rice cut initial stage dispenser on September 8th, 2010 once, per hectare is used 44% tricyclazole Tebuconazole Difenoconazole WP 600,750,900g, converts water 750Kg/hm
2Spraying.Used in 7 days at interval for the second time, spraying equipment is the sharp agricultural Jacto16LITROS atomizer spray of Singapore, and aperture＜0.7mm, medicament do not stay raffinate.
The effect of control ear stem pest sees Table 1, and the preventive effect that per hectare sprays 44% tricyclazole Tebuconazole Difenoconazole WP 600,750,900g is respectively 84.76%, 85.59%, 89.20%, and it is remarkable to handle differences.The preventive effect of per hectare 900g application dosage is best, up to 89.20%, with the preventive effect performance significant difference of contrast medicament.Examine and produce the result and show that each handles all performance volume increase, wherein per hectare is used the ratio blank volume increase 8.55% of 44% tricyclazole Tebuconazole Difenoconazole WP 900g.
The field test results of table 1 44% three penta benzene WP control panicle blast
2.40% tricyclazole Tebuconazole Difenoconazole E prescription (1: 0.5: 0.5) WP control panicle blast
Test arrangement is located in bank mountain area, north, the Changjiang river in Anhui Province's Qianshan County government's bank town Jin Cheng village, is rice blast Chang Faqu, grave illness district.Stubble is soybean experimental field, sandy loam experimental field, and fertility is better-than-average, pH value 5.7, the field piece is smooth, and irrigation canals and ditches are supporting.Rice varieties is II interior excellent 111.Before the dispenser, the leaf pest are very light, and disease refers to be about 1 grade.Paddy rice cut initial stage dispenser on August 18th, 2010 once, per hectare is used 40% tricyclazole Tebuconazole Difenoconazole WP 600,750,900g, converts water 750Kg/hm
2Spraying.Used in 12 days at interval for the second time, spraying equipment is the moving atomizer spray of " bodyguard " participants in a bridge game.
The effect of control ear stem pest sees Table 2, and the preventive effect that per hectare sprays 40% tricyclazole Tebuconazole Difenoconazole WP 600,750,900g is respectively 75.50%, 76.26%, 77.00%.The preventive effect of per hectare 900g application dosage is best, up to 77.00%, with the preventive effect performance significant difference of contrast medicament.Examine and produce the result and show that each handles all performance volume increase, wherein per hectare is used the ratio blank volume increase 7.54% of 40% tricyclazole Tebuconazole Difenoconazole WP 900g.
The field test results of table 2 40% three penta benzene WP control panicle blast
3.40% tricyclazole Tebuconazole Difenoconazole I prescription (1: 0.33: 0.67) WP control panicle blast
Test arrangement in 2009 is located in the mountain area in the An County, Sichuan Province, is rice blast Chang Faqu, grave illness district.Stubble is soybean experimental field, and experimental field fertility is better-than-average, and the field piece is smooth, and irrigation canals and ditches are supporting.Rice varieties is II excellent 725.Before the dispenser, the leaf pest are very light, and disease refers to be about 1 grade.The initial stage dispenser of paddy rice cut once, per hectare is used 40% tricyclazole Tebuconazole Difenoconazole WP 600,750,900g, converts water 750Kg/hm
2Spraying.Used in 7 days at interval for the second time, spraying equipment is the sharp agricultural Jacto 16LITROS manual sprayer spraying of Singapore.
The effect of control ear stem pest sees Table 3, and the preventive effect that per hectare sprays 40% tricyclazole Tebuconazole Difenoconazole WP 600,750,900g is respectively 65.94%, 77.93%, 78.73%.The preventive effect of per hectare 900g application dosage is best, up to 78.73%.The effect that middle and high dosage is handled all is better than the preventive effect of contrast medicament kasumin and tricyclazole processing.Examine and produce the result and show that each handles all performance volume increase, wherein per hectare is used the ratio blank volume increase 5.28% of 40% tricyclazole Tebuconazole Difenoconazole WP 900g.
The field test results of table 3 44% three penta benzene WP control panicle blast
4.5% tricyclazole Tebuconazole Difenoconazole J prescription (1: 0.33: 0.17) granula is handled control paddy rice panicle blast
Test arrangement is in Hou Xin village, Hua Yang town, Jurong City, Jiangsu Province, and this area belongs to rice blast chronic illness district, medicaments such as iprobenfos is developed immunity to drugs through monitoring.Stubble is wheat experimental field, and the test region soil types is the diligent earth of paddy rice, pH value 7.5, and experimental field the field piece is smooth, and irrigation canals and ditches are supporting.Rice varieties is fragrant numerous 103.Before the dispenser, the leaf pest are very light, and disease refers to be about 1 grade.On August 30th, 2010 spread fertilizer over the fields in paddy rice medication in booting stage.Per hectare is used 5% tricyclazole Tebuconazole Difenoconazole granule 9000,12000,15000g; Contrast medicament 75% tricyclazole WP 600g.Spread fertilizer over the fields with 150 kilograms of fine earth mixings with per hectare respectively.10 days investigation preventive effects behind the Qi Sui.
The effect of control ear stem pest sees Table 4.The result shows that prescription of the present invention is processed into granule and spreads fertilizer over the fields, and tricyclazole WP mixes " pesticide-clay mixture " and spread fertilizer over the fields, and all panicle blast is had good preventive effect.Wherein to spread fertilizer over the fields the preventive effect of 5% tricyclazole Tebuconazole Difenoconazole granule 9000,12000,15000g be respectively 79.89%, 86.62%, 88.33% to per hectare, similar to the effect of contrast medicament 75% tricyclazole WP600g consumption.
The field test results of table 4.5% 3 penta benzene granules control panicle blast
5.10% tricyclazole Tebuconazole Difenoconazole N prescription (1: 0.08: 0.04) WG seed treatment control paddy rice seedling pest
Respectively by the 100kg rice paddy seed with the water of 10% tricyclazole Tebuconazole Difenoconazole WG (water yield is 1.5 times of grain weight) of 200g, 250g, 300g seed soaking 48 hours (about 20 ℃ of room temperatures) after, vernalization is seeded in the basin alms bowl.3～4 leaf phase spray inoculation magnaporthe grisea spore suspension, 7～10 days " Invest, Then Investigate " blade morbidity severities, and calculate control efficiency.
The field test results of table 5 10% three penta benzene WG control paddy rice seedling pest
6.5% tricyclazole Tebuconazole Difenoconazole L prescription (1: 0.17: 0.08) WG control rice blast seedling pest
Test arrangement is in Lou Zhuan town, Jiangyan City, Jiangsu Province, and the test area is the chronic illness district, and rice varieties is that force is educated round-grained rice No. 3.Stubble is wheat experimental field, land readjustment, and fertility is better-than-average, and irrigating facility is complete.In the 3 leaf phases of rice shoot, evenly spread fertilizer over the fields with 5% tricyclazole Tebuconazole Difenoconazole WG, 4000,6000,9000 restraint agent and after the 150kg rare earth mixes by the per hectare rice seedling bed, contrast with 75% tricyclazole WP 300g/hm
2Water 600kg is sprayed.Investigation seedling leaf pest generation severity before transplanting, and calculate control efficiency.
The effect of control ear stem pest sees Table 6, and the preventive effect that per hectare sprays 5% tricyclazole Tebuconazole Difenoconazole WP 4000,6000,9000g is respectively 80.31%, 86.22%, 93.21%.The preventive effect of per hectare 900g application dosage is best, up to 93.21%, with the preventive effect performance significant difference of contrast medicament.
The field test results of table 6 5% three penta benzene WG control paddy rice seedling pest
(4) effect test conclusion
Indoor and field trial proof tricyclazole, Tebuconazole and three kinds of bactericide active ingredients of Difenoconazole have compatibility.Under the situation of total amount greater than the total amount of other two kinds of triazole bactericidal agents of tricyclazole, the different proportion mixing post processing rice seedling of ternary built agent is compared the synergistic effect that all has in various degree to postvaccinal rice blast occurrence degree control effect with using single agent.With tricyclazole: Tebuconazole: the proportioning of Difenoconazole 1: 0.04～0.8: 1: 0.04～0.8 is handled rice shoot, and synergistic effect is the most obvious.Select 40% and 44% wetting powder and 5% and 10% water dispersible granules and the granules of wherein 6 kinds of different proportionings processing, by water is sprayed, seed treatment and distinct methods such as spread fertilizer over the fields, the effect of control seedling pest and panicle blast is all very good.Particularly use obvious effect of increasing production in the later stage.
Claims (2)
1. microbicide compositions of preventing and treating rice blast, it is characterized in that, it is selected from the ternary built microbicide compositions of tricyclazole, Tebuconazole and Difenoconazole, wherein sterilization or bacteriostatic active ingredients tricyclazole for active component: Tebuconazole: the weight ratio of Difenoconazole is 1: (0.04～0.8): (0.04～0.8).
2. a kind of using method of preventing and treating the microbicide compositions of rice blast according to claim 1 is characterized in that the method control rice blast by soaking seed or spraying, spread fertilizer over the fields in seedling stage and vegetative period.
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| CN102907436A (en) * | 2012-11-13 | 2013-02-06 | 利民化工股份有限公司 | Ternary complex emulsifiable solution as well as preparation method and application thereof |
| CN107242064A (en) * | 2017-07-04 | 2017-10-13 | 天峨县平昌生态农业有限公司 | A kind of disease-resistant method during Rice Cropping |
| CN107646584A (en) * | 2017-09-29 | 2018-02-02 | 广西那坡县翠株园林业科技有限公司 | A kind of method for preventing and treating Rice Leaf seasonal febrile diseases |
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