CN104957166A - Corn lodging-resistant seed coating agent containing chlormequat chloride, thiamethoxam, fipronil and tebuconazole and preparation method thereof - Google Patents

Abstract

The invention relates to the field of pesticide preparations, and discloses a corn lodging resistance seed coating agent and a preparation method thereof. The composition of the present invention is composed of chlormequat, thiamethoxam, fipronil and tebuconazole, and the weight ratio of said chlormequat, thiamethoxam, fipronil and tebuconazole is 25-35:15-25 :2-4: 2-3. The seed coating agent of the present invention includes 25-35 parts of chlormequat, 15-25 parts of thiamethoxam, 2-4 parts of fipronil, 2-3 parts of tebuconazole, 2-4 parts of FD, 0.5-1.5 parts of BC, 1-3 parts of 1602, 0.5-1.5 parts of defoamer, 7-12 parts of PEG8000, 2-4 parts of urea, 0.05-0.15 parts of xanthan gum, 0.2-1 part of magnesium aluminum silicate, 0.2-1 part of colorant, 1.5-2.5 parts of white carbon black, and the balance is distilled water. The seed coating agent of the present invention uses chlormequat, thiamethoxam, fipronil and tebuconazole compounded as active ingredients, and these have complementary advantages, not only can resist lodging, but also can prevent and control pests and diseases, thereby achieving the goal of increasing production. purpose, and reduce the amount, type and frequency of use of pesticides, and can be widely used in the agricultural field.

Description

A corn lodging resistance seed coating agent containing chlormequat, thiamethoxam, fipronil and tebuconazole and its preparation method

technical field

The invention relates to the field of pesticide preparations, in particular to an anti-lodging composition and a seed coating agent thereof.

Background technique

In modern agricultural production, the use of seed coating agents to treat seeds is one of the most economical and convenient methods to prevent and control underground pests and crop soil-borne and seed-borne diseases. Seed coating agent is a pesticide formulation with film-forming properties for crop seed treatment, which can solidify on the surface of the seed to form a film called a seed coat. The seed coating agent absorbs water and swells in the soil without being dissolved, allowing the water and air required for normal germination of the seeds to pass through, and the contained pesticides and seed fertilizers are slowly released, which can kill underground pests and seedling pests, and has the function of preventing and controlling seedlings. It has the effects of preventing early-stage diseases and systemic diseases, improving seed germination rate, and promoting healthy growth of seedlings. The seed coating agent is close to the seeds, with concentrated medicinal power and high utilization rate, so it saves medicine, labor, and seeds compared with spraying, soil treatment, poisonous soil and other spraying methods; Harm natural enemies, safe to use; after the seed coating agent coats the seeds, the pesticide is generally not easy to spread quickly to the surrounding area, and is not affected by the sun, rain and high temperature, so it has a slow-release effect and has a long validity period.

The multifunctional seed coating agent involved in the present invention is composed of chlormequat, thiamethoxam, fipronil, and tebuconazole, and integrates the functions of lodging resistance, insecticide, sterilization, nutrition, growth promotion, and stress resistance. One, with the characteristics of high efficiency, economy, safety, long validity period and multi-function. Auxiliary ingredients are: emulsifier, dispersant, film-forming agent, antifreeze agent, thickener, warning color, defoamer, so that the active ingredients can be released gradually, not only non-toxic to crop germination and growth, but can effectively promote seed growth. For germination, rooting and growth, the seed coat film is water-permeable and air-permeable, and does not affect the life and respiration of the seeds.

Contents of the invention

The invention provides a composition composed of chlormequat, thiamethoxam, fipronil and tebuconazole, which is used for improving the lodging resistance of corn and preventing and controlling corn pests and diseases. The composition requires less dosage, obviously improves the lodging resistance of corn, has good insecticidal and bactericidal effects, and has a long residual effect period.

In view of this, the object of the present invention is to provide a novel and highly effective composition for improving corn lodging resistance and insecticidal and disease control in cornfields.

For realizing the purpose of the present invention, the present invention adopts following technical scheme:

An insecticidal and disease-preventing composition, consisting of chlormequat, thiamethoxam, fipronil and tebuconazole, the weight ratio of said chlormequat, thiamethoxam, fipronil and tebuconazole is 25- 35:15-25:2-4:2-3.

The physiological function of chlormequat is to control the vegetative growth of plants (i.e. the growth of roots, stems and leaves), promote the reproductive growth of plants (i.e. the growth of flowers and fruits), make the internodes of plants shorter, sturdier and lodging resistant, and promote leaf color Deepen, strengthen photosynthesis, improve the plant's anti-aging, drought resistance, cold resistance and salt-alkali resistance. Chlormequat has a control effect on crop growth, can prevent fallen seedlings and aborted seedlings, control growth and increase tillers, prevent plant health and prevent fall, increase ears and increase yield.

Thiamethoxam is a neonicotinoid insecticide. Its mechanism of action is to selectively inhibit the nicotinic acid acetylcholinesterase receptor in the central nervous system of insects, thereby blocking the normal conduction of the central nervous system of insects, causing paralysis and immediate death of insects. Not only has contact killing, stomach poisoning, and systemic activity, but also has higher activity, better safety, wider insecticidal spectrum, fast action speed, and long-lasting effect. It replaces those with high toxicity to mammals. , organophosphorus, carbamate, and organochlorine insecticides with residues and environmental problems have high activity against Coleoptera, Diptera, Lepidoptera, especially Homoptera pests, and can be effective Control various pests such as aphids, leafhoppers, planthoppers, whiteflies, scarab larvae, potato beetles, nematodes, ground beetles, leaf miners, and pests resistant to various types of chemical pesticides. No cross-resistance with imidacloprid, acetamiprid, nitenpyram. It can be used for both stem and leaf treatment and seed treatment, and can also be used for soil treatment. Suitable crops are rice crops, sugar beets, rapeseed, potatoes, cotton, beans, fruit trees, peanuts, sunflowers, soybeans, tobacco and citrus. It is safe for crops and has no phytotoxicity when used at the recommended dosage.

Fipronil is a phenylpyrazole insecticide with a wide insecticidal spectrum. It mainly has gastric toxicity to pests, and also has contact killing and certain systemic effects. Its mechanism of action is to hinder insect γ-aminobutyric acid Controlled chloride metabolism, so it has high insecticidal activity against important pests such as aphids, leafhoppers, planthoppers, Lepidoptera larvae, flies and Coleoptera, and has no phytotoxicity to crops. The agent can be applied to the soil or sprayed on the leaves. Applying to the soil can effectively control corn root leaf beetle, wireworm and cutworm. When sprayed on the leaves, it has a high level of control effect on diamondback moth, cabbage butterfly, rice thrips, etc., and has a long lasting effect.

Tebuconazole belongs to triazole fungicides and is a sterol deradicalization inhibitor. Tebuconazole degrades quickly in the field. It is a high-efficiency fungicide suitable for seed treatment or foliar spraying of important economic crops, and can effectively control crops. Rust, powdery mildew, net spot, root rot, head blight, smut and seed-borne ring spot, etc.

At present, there are few reports of the above-mentioned medicaments on the lodging resistance of corn. The present invention has found through a large number of tests that chlormequat, thiamethoxam, fipronil and tebuconazole compounded according to a certain ratio have a good effect on the lodging resistance of corn. The traits were significantly improved relative to the control with only chlormequat agent. Chlormequat, thiamethoxam, fipronil and tebuconazole have different structures, and the composition composed of chlormequat, thiamethoxam, fipronil and tebuconazole can enhance the lodging resistance of maize.

Pesticide raw materials cannot be used directly, and must be processed into pesticide preparations before use. Therefore, the present invention also provides an anti-lodging seed coating agent for corn, which is prepared from the four pesticide compositions described in the present invention, conventional adjuvants and carriers/solvents.

Wherein, preferably, the composition of the present invention accounts for 10%-70% by weight of the corn seed coating agent.

The insecticide of the present invention can be made into various formulations from the insecticidal composition of the present invention, conventional adjuvants and carriers/solvents as required. The present invention is preferably a seed coating agent.

Preferably, the composition of the present invention is a seed coating. In some embodiments, the composition accounts for 10%-70% by weight of the seed coating agent, the emulsifier accounts for 1.2 parts by weight of the seed coating agent, and the dispersant accounts for 1.2 parts by weight of the seed coating agent. The parts by weight are 4 parts, the antifoaming agent accounts for 0.3 parts by weight of the seed coating agent, the thickener accounts for 0.2 parts by weight of the seed coating agent, and the antifreezing agent accounts for 0.2 parts by weight of the seed coating agent. The parts by weight are 4 parts, and the balance is distilled water.

The emulsifiers, dispersants, thickeners, defoamers and antifreezing agents used in the preparation of the above formulations are all well known to those skilled in the art.

Preferably, the emulsifier described in the present invention is pesticide emulsifier monomer 600 (styrylphenol polyoxyethylene ether), 600-1, 600-2, 600-3, BY-110, BY-112, BY- One or more of 120, BY-130, BC, BY-140, 400, 403, 1601 (styrylphenol polyoxyethylene ether), 1602 (styrylphenol polyoxypropylene ether).

Preferably, the dispersant of the present invention is sodium lignosulfonate, calcium lignosulfonate, sodium polyacrylate, sodium methylene bis-naphthalene sulfonate, carboxymethyl cellulose, polyvinyl alcohol, sodium tripolyphosphate , Morwet D-425, Morwet D-500, SP-2836, SP-2800, TERSPERSE 2700, TERSPERSE 2425, DEHSCOFIX 920, FD one or more.

Preferably, the thickener of the present invention is one or more of magnesium aluminum silicate, CMC, sodium alginate, PVA, gum arabic, white carbon black, polyacrylic acid, and xanthan gum.

Preferably, the defoamer of the present invention is one or more of silicone oil, C8-10 fatty alcohol compounds, and C10-20 saturated fatty acid compounds.

Preferably, the antifreezing agent of the present invention is one or more of urine, ethylene glycol, glycerol, isopropanol, and butanol.

Tests show that the insecticide of the invention can effectively prevent and control spodoptera and stalk fly, so the invention provides the application of the composition in corn lodging resistance.

A kind of anti-lodging seed coating agent for corn of the present invention is characterized in that the weight ratio percentage of main component is: chlormequat 25%-35%, thiamethoxam 15%-25%, fipronil 2%-3%, pentamethylene Conazole 2%-3%, the percentage by weight of auxiliary components is: emulsifier 0.5%-1.5% (BC), dispersant 2%-4% (FD), film-forming agent 8%-12% (PEG8000), Antifreeze 2%-4% (urea), thickener 1%-4% (xanthan gum, white carbon black, magnesium aluminum silicate), warning color 0.2%-0.8% (bright red), defoamer 0.5 %-1.5% (nitro silicone oil), and the rest is made up with distilled water.

The preparation method of the seed coating agent: firstly weigh each raw material according to the above weight percentage, and then separately mix tebuconazole, thiamethoxam, fipronil, chlormequat, emulsifier (BC) and dispersant (FD) to form Film agent, antifreeze agent (urea), thickener (xanthan gum, white carbon black, magnesium aluminum silicate), warning color (bright red), defoamer (nitro silicone oil) and water, put into sand mill for grinding After 2-3 hours, after the defoaming agent is finally added to defoam, measure and pack to make a finished product of multifunctional seed coating agent.

The corn lodging resistance seed coating agent involved in the present invention integrates multiple functions such as lodging resistance, insecticide, sterilization, nutrition, growth promotion, and stress resistance, and has the characteristics of high efficiency, economy, safety, long validity period, and multiple functions. Reduce the amount of active ingredients, while reducing the cost of use, and both have the characteristics of insecticide and disease prevention, reduce environmental pollution, wide use period, long duration, safe for subsequent crops.

Detailed ways

The embodiment of the invention discloses an anti-lodging composition. Those skilled in the art can refer to the content of this article to appropriately improve the process parameters to achieve. In particular, it should be pointed out that all similar replacements and modifications are obvious to those skilled in the art, and they are all considered to be included within the scope of the present invention. The product of the present invention has been described through preferred embodiments, and relevant personnel can obviously make changes or appropriate changes and combinations to the product described herein without departing from the content, spirit and scope of the present invention to realize and apply the technology of the present invention .

In order to further understand the present invention, a corn lodging resistance composition provided by the present invention and its preparation and application will be described in detail below in conjunction with the examples.

Example 1

Firstly weighed by weight percentage: 25% of chlormequat, 15% of thiamethoxam, 2% of fipronil, 2% of tebuconazole, the percentage by weight of auxiliary components is: emulsifier 0.5% (BC), dispersant 2% (FD), film forming agent 8% (PEG8000), antifreeze agent 2% (urea), thickener (1% xanthan gum, 1% white carbon black, 1% magnesium aluminum silicate), warning color 0.2 % (bright red), defoamer 0.5% (nitro silicone oil), and the balance is distilled water.

The preparation method of the seed coating agent: firstly weigh each raw material according to the above weight percentage, then respectively mix chlormequat, thiamethoxam, fipronil, tebuconazole, emulsifier (BC) and dispersant (FD) to form Film agent, antifreeze agent (urea), thickener (xanthan gum, white carbon black, magnesium aluminum silicate), warning color (bright red), defoamer (nitro silicone oil) and water, put into sand mill for grinding After 2-3 hours, after the defoaming agent is finally added to defoam, measure and pack to make a finished product of multifunctional seed coating agent.

Example 2

Chlormequat 30%, thiamethoxam 20%, fipronil 2.5%, tebuconazole 2.5%, the percentage by weight of auxiliary components is: emulsifier 1% (BC), dispersant 3% (FD), film-forming Antifreeze agent 10% (PEG8000), antifreeze agent 3% (urea), thickener (1% xanthan gum, 1% white carbon black, 1% magnesium aluminum silicate), warning color 0.5% (bright red), defoaming Agent 1% (nitro silicone oil) and the balance is water.

The preparation method of the seed coating agent: firstly weigh each raw material according to the above weight percentage, then respectively mix chlormequat, thiamethoxam, fipronil, tebuconazole, emulsifier (BC) and dispersant (FD) to form Film agent, antifreeze agent (urea), thickener (xanthan gum, white carbon black, magnesium aluminum silicate), warning color (bright red), defoamer (nitro silicone oil) and water, put into sand mill for grinding After 2-3 hours, after the defoaming agent is finally added to defoam, measure and pack to make a finished product of multifunctional seed coating agent.

Example 3

Chlormequat 35%, thiamethoxam 25%, fipronil 3%, tebuconazole 3%, the percentage by weight of auxiliary components is: emulsifier 1.5% (BC), dispersant 4% (FD), film forming Agent 12% (PEG8000), antifreeze agent 4% (urea), thickener 4% (xanthan gum, white carbon black, magnesium aluminum silicate), warning color 0.8% (bright red), defoamer 1.5% ( nitro silicone oil) and the balance is water.

The preparation method of the seed coating agent: firstly weigh each raw material according to the above weight percentage, then respectively mix chlormequat, thiamethoxam, fipronil, tebuconazole, emulsifier (BC) and dispersant (FD) to form Film agent, antifreeze agent (urea), thickener (xanthan gum, white carbon black, magnesium aluminum silicate), warning color (bright red), defoamer (nitro silicone oil) and water, put into sand mill for grinding After 2-3 hours, after the defoaming agent is finally added to defoam, measure and pack to make a finished product of multifunctional seed coating agent.

Example 4

Chlormequat 25%, the percentage by weight of auxiliary components is: emulsifier 1.5% (BC), dispersant 4% (FD), film forming agent 12% (PEG8000), antifreeze agent 4% (urea), thickener Agent 4% (xanthan gum, white carbon black, magnesium aluminum silicate), warning color 0.8% (bright red), defoamer 1.5% (nitro silicone oil) and the balance is water.

The preparation method of this kind of coating agent: first weigh each raw material according to the above weight percentage, and then respectively mix chlormequat, emulsifier (BC), dispersant (FD), film forming agent, antifreeze agent (urea), thickener agent (xanthan gum, white carbon black, magnesium aluminum silicate), warning color (bright red), defoamer (nitro silicone oil) and water, put into a sand mill and grind for 2-3 hours, and finally add defoamer to defoam After finishing, measure and pack to make the finished product of multifunctional seed coating agent.

Example 5

Chlormequat 30%, the percentage by weight of auxiliary components is: emulsifier 1.5% (BC), dispersant 4% (FD), film forming agent 12% (PEG8000), antifreeze agent 4% (urea), thickener Agent 4% (xanthan gum, white carbon black, magnesium aluminum silicate), warning color 0.8% (bright red), defoamer 1.5% (nitro silicone oil) and the balance is water.

The preparation method of this kind of coating agent: first weigh each raw material according to the above weight percentage, and then separately mix chlormequat, emulsifier (BC), dispersant (FD), film forming agent, antifreeze agent (urea), thickener agent (xanthan gum, white carbon black, magnesium aluminum silicate), warning color (bright red), defoamer (nitro silicone oil) and water, put into a sand mill and grind for 2-3 hours, and finally add defoamer to defoam After finishing, measure and pack to make the finished product of multifunctional seed coating agent.

Example 6

Chlormequat 35%, the percentage by weight of auxiliary components is: emulsifier 1.5% (BC), dispersant 4% (FD), film forming agent 12% (PEG8000), antifreeze agent 4% (urea), thickener Agent 4% (xanthan gum, white carbon black, magnesium aluminum silicate), warning color 0.8% (bright red), defoamer 1.5% (nitro silicone oil) and the balance is water.

The preparation method of this kind of coating agent: first weigh each raw material according to the above weight percentage, and then respectively mix chlormequat, emulsifier (BC), dispersant (FD), film forming agent, antifreeze agent (urea), thickener agent (xanthan gum, white carbon black, magnesium aluminum silicate), warning color (bright red), defoamer (nitro silicone oil) and water, put into a sand mill and grind for 2-3 hours, and finally add defoamer to defoam After finishing, measure and pack to make the finished product of multifunctional seed coating agent.

When using, the corn seed dressing is evenly carried out according to the ratio of drug to seed 1:50-100. Carry out field test in Yutian, Hebei, the corn variety for testing is Xundan 20, and its plant height, lodging rate, yield per mu are measured, and the seed coating agent described in embodiment 1-3 is to the yield per mu of corn relative to embodiment 4 Both -6 and the blank control were significantly improved, and the lodging rate was significantly decreased.

Table 1 Result of seed coating test in 2014 (Jundan 20 of Yutian Test Station )

Claims (7)

1. a corn composition resistant to lodging, is characterized in that, is made up of chlormequat, Diacloden, ethiprole and Tebuconazole, and the weight ratio of described chlormequat, Diacloden, ethiprole and Tebuconazole is 25-35:15-25:2-4:2-3.

2. according to composition described in claim 1, it is characterized in that, be made up of chlormequat, Diacloden, ethiprole and Tebuconazole, the weight ratio of described chlormequat, Diacloden, ethiprole and Tebuconazole is 30:20:3:2.5.

3. composition described in claim 1 or 2 is preparing the application in corn preparation resistant to lodging.

4. apply according to described in claim 3, it is characterized in that, described pesticidal preparations is seed coat agent.

5. the percentage by weight accounting for seed coat agent according to composition described in claim 1 is 10%-70%.

6. a seed coat agent, it is characterized in that, with weight parts, comprise chlormequat 25-35 part, Diacloden 15-25 part, ethiprole 2-4 part, Tebuconazole 2-3 part, FD 2-4 part, BC 0.5-1.5 part, 1602 1-3 parts, defoamer 0.5-1.5 part, PEG8000 7-12 part, urea 2-4 part, xanthans 0.05-0.15 part, aluminium-magnesium silicate 0.2-1 part, colouring agent 0.2-1 part, white carbon 1.5-2.5 part, surplus is distilled water.

7. according to seed coat agent described in claim 6, it is characterized in that, by weight percentage, comprise chlormequat 30 parts, Diacloden 20 parts, ethiprole 2 parts, Tebuconazole 2.5 parts, FD 3 parts, BC 1 part, 1,602 2 parts, defoamer 1 part, PEG8000 10 parts, 2 parts, urea, xanthan amine 0.1 part, aluminium-magnesium silicate 0.5 part, colouring agent 0.5 part, white carbon 2 parts, surplus is distilled water.