CN111226967A - Organosilicon soybean seed coating agent and preparation and application thereof - Google Patents
Organosilicon soybean seed coating agent and preparation and application thereof Download PDFInfo
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Abstract
The invention provides an organic silicon soybean seed coating agent and preparation and application thereof. The feed is prepared from the following raw materials: 50-60 parts of bactericide and insecticide; 20-30 of trace elements; 2-6 parts of drought-resistant agent and growth regulator; 2-5 parts of a dispersant; 2-3 parts of an emulsifier; 4-6 parts of a film forming agent; and 2-4 of a color warning agent. The bactericide and the insecticide consist of carbendazim, thiram and fipronil in a mass ratio of 5:3: 3; the trace elements consist of boric acid, borax, ammonium molybdate and magnesium sulfate in a mass ratio of 5:5:4:10 in sequence; the drought-resistant agent and the growth regulator are trehalose and an organic silicon preparation, wherein the mass ratio of the trehalose to the organic silicon preparation is 2: 3; the amount of the mixed seeds is 1: 700-800. Compared with seed coating agents on the market without seed dressing, the soybean seed coating agent provided by the invention has the advantages that the incidence of disease and insect pests in the seedling stage are effectively controlled, the emergence rate is improved, the root growth is promoted, and the effects of increasing the yield and improving the quality are achieved.
Description
Technical Field
The invention relates to the field of seed treatment, in particular to an organic silicon soybean seed coating agent and preparation and application thereof.
Background
Soybean is a major source of vegetable fats and proteins in our country. With the improvement of the living standard of people and the rapid development of the processing industry and the animal husbandry, the soybean demand is increased rapidly, domestic soybeans are far from meeting the increasing market demand, a large number of foreign soybeans have to be imported, the external dependence degree is increased year by year, and the situation that the soybean and the industrial chain thereof are controlled is formed. Improving the yield per unit of soybean and improving the quality of the soybean are particularly important.
The soybean production in China faces the challenges of various plant diseases and insect pests, such as root rot, mimosa, brown spot, cyst nematode, grub, soybean virosis and the like. Meanwhile, the northeast is a main soybean production area, the germination of seeds is influenced because drought occurs frequently in spring, and the obvious yield reduction of soybeans can be caused if the diseases and the pests and the drought cannot be effectively controlled. Improving the seed activity, promoting the seed germination, promoting the root growth and development of the soybean in the seedling stage, cultivating strong seedlings, enhancing the disease resistance, drought resistance and stress resistance, and laying a foundation for high yield of the soybean.
Seed coating is a measure for comprehensively preventing and controlling crop diseases and insect pests, and becomes a necessary operation flow for agricultural planting in the world in the aspects of drought resistance, freezing resistance, seedling alignment, strong seedling, stable yield, high yield, reduction of pesticide and labor input and the like. The seed coating agent is a film-shaped substance prepared from insecticide, bactericide, trace fertilizer, hormone and the like. The seed coating agent is hardly dissolved after the seeds are sowed into the soil, forms a protective barrier for preventing plant diseases and insect pests around the seeds, is slowly released, absorbed and transmitted to the ground part, and continuously plays a role in preventing and treating the plant diseases and insect pests. The micro-fertilizer and hormone in the seed coating agent play a role in fertilizing and stimulating the growth of root systems. The seed coating agent can sustain the pesticide effect for 45-60 days in the soil, thereby achieving the purposes of preventing and treating plant diseases and insect pests in the seedling stage, promoting growth and development and improving crop yield.
At present, soybean seed coating agent formulations at home and abroad mainly comprise suspension type seed coating agents and have various components. The single component of the seed coating agent produced in China is more applied by 10% of imidacloprid, and the compound seed coating agent is more applied by fipronil, fludioxonil and metalaxyl-M, such as 28.8% of fipronil, 0.66% of fludioxonil, 0.26% of metalaxyl-M or 22.2% of fipronil, 1.1% of fludioxonil, 1.7% of metalaxyl-M and the like; the single formula of the seed coating produced abroad comprises 60% of imidacloprid, 2.5% of fludioxonil, 70% of fipronil and the like, and the components of the compound seed coating are similar to those of the seed coating produced at home, such as 3.75% of metalaxyl-M and 2.5% of fludioxonil. At present, soybean seed coating agents at home and abroad are single in dosage form and components, weak in pertinence to soybean pest and disease damage and growth requirements, and have the problems of nonuniform dosage, large dosage and the like.
The most remarkable characteristic of organosilicon (aza-silatrane compound Mival) is that the organosilicon has biological activity, the activity can promote the biosynthesis of protein and nucleic acid, the electronic induction function of coordination bonds in molecules, and the energy can induce the division of crop seed cells, especially the mitosis of rooting cells and the enhancement of the biosynthesis capacity of protein, thereby leading to the increase of rooting points, the enhancement of germination capacity and high germination rate of seeds in the germination process. The root system of the plant is developed, and the root capacity is increased, so that the plant can fully absorb the nutrients in the soil at the early development stage, and a foundation is laid for the later vegetative growth and reproductive growth.
Disclosure of Invention
The invention aims to provide an organic silicon soybean seed coating agent.
The soybean seed coating agent provided by the invention comprises components such as bacteriostatic, bactericidal and insecticidal components (carbendazim, thiram and fipronil), components (cyclic dipeptide compounds) for resisting drought and promoting root growth, trace elements (boric acid, borax, ammonium molybdate and magnesium sulfate) for promoting photosynthesis and nitrogen fixation mechanism and the like. The seed coating agent is prepared from the superfine powder, and has the characteristics of less medicine consumption, large seed dressing amount (the medicine: seed ratio is 1: 500-.
The soybean seed coating agent provided by the invention is prepared from the following raw materials: bactericide, insecticide, trace elements, drought resistance agent, growth regulator, dispersant, emulsifier, film-forming agent and color-warning agent;
wherein, the bactericide and the insecticide are 50 to 60 parts by mass; 20-30 parts of trace elements; 2-6 parts of drought-resistant agent and growth regulator; 2-5 parts of a dispersant; 2-3 parts of an emulsifier; 4-6 parts of a film forming agent; and 2-4 parts of a color warning agent.
Specifically, the following steps can be carried out: 55 parts of bactericide and insecticide; 24 parts by mass of trace elements; 5 parts of drought resistance agent and growth regulator; 2-5 parts of a dispersant; 2-3 parts of an emulsifier; 4-6 parts of a film forming agent; and 2-4 parts of a color warning agent.
The bactericide and the insecticide consist of carbendazim, thiram and fipronil in a mass ratio of 5:3: 3;
wherein, the carbendazim is 50 percent of wettable powder, and the thiram is 50 percent of wettable powder;
the trace elements consist of boric acid, borax, ammonium molybdate and magnesium sulfate, wherein the mass ratio of the boric acid to the borax to the ammonium molybdate to the magnesium sulfate can be 5:5:4: 10;
the drought-resistant agent and the growth regulator are trehalose (C)12H22O11) 1-chloromethyl silatrane [ ClCH ] as organosilicon preparation2Si(OCH2CH2)3N]Powder, wherein the mass ratio of trehalose to the organosilicon preparation can be 2: 3;
the dispersing agent is polyvinyl alcohol or a naphthalenesulfonic acid formaldehyde condensate;
the emulsifier is a styryl phenol polyoxyethylene ether and calcium dodecyl benzene sulfonate compound emulsifier;
the film forming agent is sodium carboxymethyl cellulose (CMC);
the color warning agent is rose essence.
Specifically, the soybean seed coating agent is prepared from the following raw materials: 25 parts of carbendazim, 15 parts of thiram, 15 parts of fipronil, 5 parts of boric acid, 5 parts of borax, 4 parts of ammonium molybdate, 10 parts of magnesium sulfate, 2 parts of trehalose, 3 parts of organic silicon, 1-4 parts of polyvinyl alcohol or naphthalene sulfonic acid formaldehyde condensation compound (NNO) and 2-3 parts of styrylphenol polyoxyethylene ether and calcium dodecyl benzene sulfonate compound emulsifier; 5 parts of sodium carboxymethylcellulose (CMC) and 4 parts of rose essence.
The coating agent for soybean seeds is powder with the fineness of 1000 meshes or 400-500 meshes.
The invention also provides a method for preparing the soybean seed coating agent.
The method for preparing the soybean seed coating agent provided by the invention comprises the following steps:
1) mixing carbendazim, thiram and fipronil, and performing ball milling to obtain a component A;
2) mixing other raw materials, adding the mixture into a ball mill for the component A, and continuously ball-milling until a mixed raw material with the fineness of 400-500 meshes is obtained as a component B;
3) or continuously placing the component B into a jet mill for carrying out superfine grinding for 15-30 minutes to reach 1000 meshes.
The method can further comprise the operation of packaging the coating agent powder meeting the mesh requirement.
In the steps 1) and 2) of the method, the technological parameters of ball milling are as follows: the grinding ball grading is 1:2:4, the rotating speed of the ball mill is 170r/min, the ball milling time is 30min, and the ball-material ratio is 20: 1.
In the step 3), the technological parameters of the superfine grinding are as follows: the micro-grinding time is 25min, the micro-grinding frequency is 23-26Hz, and the micro-grinding wind speed is 1.4-1.8 m/s; the engine is operated at a critical speed (nk) of 60%.
The application of the soybean seed coating agent in soybean planting also belongs to the protection scope of the invention.
The invention also provides a using method of the soybean seed coating agent.
The application method of the soybean seed coating agent comprises the following steps: and (3) uniformly mixing the soybean seed coating agent and the soybean seeds.
Further, when the soybean seed coating agent is mixed with the soybean seed, water of 2.00-2.25% (specifically, 2%) by weight of the seed may be added for seed dressing.
When in use, the mass ratio of the coating agent to the seeds can be 1: 700-800; namely, 1 kilogram of seed coating agent with the fineness of 1000 meshes, the weight of the seed coating agent is 1: 800; 1 kilogram of 400-mesh 500-mesh seed coating agent with the fineness of 1: 700.
The coating can be carried out by a coating machine, and the mixture can also be mixed by a mixing machine.
The organic silicon efficient drought-resistant disease-resistant nutritional soybean seed coating agent is suitable for main soybean production areas in northeast, particularly continuous cropping soybean areas in northeast.
The soybean seed coating agent of the invention has the following characteristics:
1) the active ingredients are high, and are more than 55 percent: contains bactericide, insecticide, trace elements, growth regulator, etc.;
2) the fineness is as large as 400-;
3) the trace element boron is added, so that the nitrogen fixation and photosynthesis of the soybeans are improved; the added growth regulator trehalose promotes the activity of seeds and the growth of root systems, and enhances the stress resistance of soybeans; reducing dosage by 2-3 times, improving nitrogen fixation mechanism, and reducing weight and drug consumption.
4) The added trace element silicon enhances the germination capacity of soybean seeds and improves the germination rate of soybeans; the root system of soybean is developed and the root capacity is increased.
The invention improves the seed activity, promotes the root system growth and plays a role in increasing the yield and improving the quality by using the trace elements in cooperation with the organic silicon drought-resistant agent and the growth regulator.
The soybean powder seed coating agent is applied to the Yangjiang city, the Beian city, the keshan county and the Lindian county in Heilongjiang province; compared with the current common domestic 35% Duck seed coating agent, imported metalaxyl-M37.5 g/l and fludioxonil 25g/l (Xianzhengda) suspension seed coating agent used in the market, the invention effectively controls the incidence rate and seedling stage insect damage of soybean, improves the rate of emergence, promotes the growth of root systems and plays the roles of increasing yield and improving quality.
Drawings
FIG. 1 is a graph comparing the yield of soybeans treated with the seed coating prepared in example 1 of the present invention. Lower case letters represent significant differences between treatments per region (p < 0.05).
FIG. 2 is a graph showing the comparison of soybean yields after application of the seed coating prepared in example 1 of the present invention and the seed coatings prepared in comparative examples 1 to 4. Lower case letters represent significant differences between treatments (p < 0.05).
Detailed Description
The present invention will be described below with reference to specific examples, but the present invention is not limited thereto.
Examples 1,
Preparing a soybean seed coating agent, 25 parts by mass of carbendazim, 15 parts by mass of thiram, 15 parts by mass of fipronil, 5 parts by mass of boric acid, 5 parts by mass of borax, 4 parts by mass of ammonium molybdate, 10 parts by mass of magnesium sulfate, 2 parts by mass of trehalose, 3 parts by mass of organosilicon, 4 parts by mass of polyvinyl alcohol or naphthalenesulfonic acid formaldehyde condensate (NNO), and 3 parts by mass of a styrylphenol polyoxyethylene ether and calcium dodecylbenzenesulfonate composite emulsifier; 5 parts of sodium carboxymethylcellulose (CMC) and 4 parts of rose essence.
Mixing carbendazim, thiram and fipronil, and performing ball milling to obtain a component A;
mixing other raw materials, adding the mixture into a ball mill for the component A, and continuing ball milling until the fineness is 400-500 meshes;
and placing the mixed raw materials of 400-mesh and 500-mesh into a jet mill for carrying out superfine grinding for 28 minutes to reach 1000 meshes.
Wherein the ball milling process parameters are as follows: the grinding ball grading is 1:2:4, the rotating speed of the ball mill is 170r/min, the ball milling time is 30min, and the ball material ratio is 20: 1;
the technological parameters of the superfine grinding are as follows: the micro-grinding time is 25min, the micro-grinding frequency is 23-26Hz, and the micro-grinding wind speed is 1.4-1.8 m/s; the engine is operated at a critical speed (nk) of 60%.
Mixing the coating agent with soybean seed at a ratio of 1: 800.
The application effect on the black soil in Keshan county of Heilongjiang province is as follows: the soybean emergence rate is 95.8 percent, and compared with the control of domestic 35 percent Duokefu seed coating agent, imported metalaxyl-M37.5 g/l and fludioxonil 25g/l (Xianzhengda) seed coating agent, the root system is averagely increased by 28 percent, and the fresh weight of the plant is averagely increased by 10.6 percent; the seed coating agent has the root rot prevention effect of 83 percent, the grub prevention effect of the seedling-stage pests of 87.9 percent and the thrips prevention effect of 73.5 percent.
The black soil application yield (kg/mu) in keshan county of Heilongjiang province is as follows:
| domestic control | Import control | Inventive example 1 | |
| First parallel experiment | 162.3 | 169.1 | 192.5 |
| Second parallel experiment | 153.4 | 178.0 | 197.7 |
| Third parallel experiment | 168.7 | 176.4 | 191.6 |
| Average of production | 161.5 | 174.5 | 193.9 |
Compared with the domestic seed coating agent, the yield is increased by 20.1 percent, and compared with the imported seed coating agent, the yield is increased by 11.1 percent.
The application effect on the black calcium soil in the Lindian county of Black Longjiang: the soybean emergence rate is 96.7%, the root rot disease prevention rate is 87.9%, and the soil pest control efficiency is 86.7%.
The application yield (kg/mu) on black calcium soil in Lindian county of Black Longjiang is as follows:
| domestic control | Import control | Inventive example 1 | |
| First parallel experiment | 154.9 | 175.1 | 188.6 |
| Second parallel experiment | 167.3 | 176.2 | 189.0 |
| Third parallel experiment | 168.2 | 168.7 | 180.8 |
| Average of production | 163.5 | 173.3 | 186.1 |
Compared with the domestic seed coating agent, the yield is increased by 13.9 percent, and compared with the imported seed coating agent, the yield is increased by 7.4 percent.
The application effect on the Liaoning Fuxin sandy loam is as follows: 78.2 percent of root rot control effect, 83.2 percent of underground pest control effect,
the application yield (kg/mu) on black calcium soil in Lindian county of Black Longjiang is as follows:
| domestic control | Import control | Inventive example 1 | |
| First parallel experiment | 162.7 | 169.1 | 186.2 |
| Second parallel experiment | 149.9 | 165.6 | 176.4 |
| Third parallel experiment | 158.2 | 172.2 | 177.7 |
| Average of production | 156.9 | 169.0 | 180.1 |
Compared with the domestic seed coating agent, the yield is increased by 14.8 percent, and compared with the imported seed coating agent, the yield is increased by 6.6 percent.
The mu cost of the seed coating formula in example 1 is 1.75 yuan calculated by every kg of soybeans, the input-output ratio is 1:59.2 when the seed coating is applied to black soil in keshan county in Heilongjiang province, the input-output ratio is 1:40.5 when the seed coating is applied to black calcium soil in Heilongjiang Lindian county, and the input-output ratio is 1:39.1 when the seed coating is applied to black calcium soil in Heilongjiang Lindian county; the average input-output ratio of the formula applied to the three places is 1:46.3, the formula reduces the dosage of the soybean in the growing season, improves the nitrogen fixation capacity of the soybean, realizes cost saving and efficiency improvement, and promotes the green development of the soybean industry.
Comparative examples 1 to 8 have the following effects in black soil in keshan county of Heilongjiang province:
comparative example 1:
the soybean powder seed coating agent comprises the following components: 25 parts of carbendazim, 15 parts of thiram, 15 parts of fipronil, 10 parts of boric acid, 4 parts of ammonium molybdate, 10 parts of magnesium sulfate, 2 parts of trehalose, 3 parts of organic silicon, 4 parts of polyvinyl alcohol or naphthalene sulfonic acid formaldehyde condensate (NNO) and 3 parts of styryl phenol polyoxyethylene ether and calcium dodecyl benzene sulfonate composite emulsifier; 5 parts of sodium carboxymethylcellulose (CMC) and 4 parts of rose essence.
Mixing the coating agent with soybean seed at a ratio of 1: 800.
The yield of the soybean per mu is 180.08 kg/mu, the yield is increased by 11.5 percent on average and the income is increased by 74.5 yuan compared with the domestic seed coating agent; compared with the imported seed coating agent, the yield is increased by 5.6 percent, and the income is increased by 22.3 yuan; the input-output ratio was 1: 27.5.
Comparative example 2:
the soybean powder seed coating agent comprises the following components: 25 parts of carbendazim, 15 parts of thiram, 15 parts of fipronil, 8 parts of boric acid, 2 parts of borax, 4 parts of ammonium molybdate, 10 parts of magnesium sulfate, 2 parts of trehalose, 3 parts of organic silicon, 4 parts of polyvinyl alcohol or naphthalene sulfonic acid formaldehyde condensation compound (NNO), and 3 parts of styrylphenol polyoxyethylene ether and calcium dodecyl benzene sulfonate compound emulsifier; 5 parts of sodium carboxymethylcellulose (CMC) and 4 parts of rose essence.
Mixing the coating agent with soybean seed at a ratio of 1: 800.
The yield of the soybean per mu is 182.4 kilograms per mu, the yield is increased by 13 percent on average compared with the seed coating agent produced in China, and the income is increased by 83.7 yuan; compared with the imported seed coating agent, the yield is increased by 4.5 percent, and the income is increased by 31.6 yuan; the input-output ratio is 1: 32.8.
Comparative example 3:
the soybean powder seed coating agent comprises the following components: 25 parts of carbendazim, 15 parts of thiram, 15 parts of fipronil, 2 parts of boric acid, 8 parts of borax, 4 parts of ammonium molybdate, 10 parts of magnesium sulfate, 2 parts of trehalose, 3 parts of organic silicon, 4 parts of polyvinyl alcohol or naphthalene sulfonic acid formaldehyde condensation compound (NNO), and 3 parts of styrylphenol polyoxyethylene ether and calcium dodecyl benzene sulfonate compound emulsifier; 5 parts of sodium carboxymethylcellulose (CMC) and 4 parts of rose essence.
Mixing the coating agent with soybean seed at a ratio of 1: 800.
The yield of the soybean per mu is 182.1 kg/mu, the yield is increased by 12.8 percent on average and the income is increased by 82.5 yuan compared with the domestic seed coating agent; compared with the imported seed coating agent, the yield is increased by 4.4 percent, and the income is increased by 30.4 yuan; the input-output ratio was 1: 32.3.
Comparative example 4:
the soybean powder seed coating agent comprises the following components: 25 parts of carbendazim, 15 parts of thiram, 15 parts of fipronil, 10 parts of borax, 4 parts of ammonium molybdate, 10 parts of magnesium sulfate, 2 parts of trehalose, 3 parts of organic silicon, 4 parts of polyvinyl alcohol or naphthalenesulfonic acid formaldehyde condensate (NNO), and 3 parts of styrylphenol polyoxyethylene ether and calcium dodecyl benzene sulfonate composite emulsifier; 5 parts of sodium carboxymethylcellulose (CMC) and 4 parts of rose essence.
Mixing the coating agent with soybean seed at a ratio of 1: 800.
The yield of the soybean per mu is 179.8 kg/mu, the yield is increased by 11.4 percent on average and the income is increased by 73.3 percent compared with the domestic seed coating agent; compared with the imported seed coating agent, the yield is increased by 3.0 percent, and the income is increased by 21.2 yuan; the input-output ratio was 1:27.
Comparative example 5
The soybean powder seed coating agent comprises the following components: 25 parts of carbendazim, 15 parts of thiram, 15 parts of fipronil, 5 parts of boric acid, 5 parts of borax, 4 parts of ammonium molybdate, 10 parts of magnesium sulfate, 5 parts of organic silicon, 4 parts of polyvinyl alcohol or naphthalene sulfonic acid formaldehyde condensate (NNO), and 3 parts of styrylphenol polyoxyethylene ether and calcium dodecyl benzene sulfonate composite emulsifier; 5 parts of sodium carboxymethylcellulose (CMC) and 4 parts of rose essence.
Mixing the coating agent with soybean seed at a ratio of 1: 800.
The yield of the soybean per mu is 177.3 kilograms per mu, the yield is increased by 9.8 percent on average and the income is increased by 63.3 yuan compared with the domestic seed coating agent; compared with the imported seed coating agent, the yield is increased by 1.6, and the income is increased by 11.2 yuan; the input-output ratio is 1: 16.6.
Comparative example 6
The soybean powder seed coating agent comprises the following components: 25 parts of carbendazim, 15 parts of thiram, 15 parts of fipronil, 5 parts of boric acid, 5 parts of borax, 4 parts of ammonium molybdate, 10 parts of magnesium sulfate, 2.5 parts of trehalose, 2.5 parts of organic silicon, 4 parts of polyvinyl alcohol or naphthalene sulfonic acid formaldehyde condensation compound (NNO), and 3 parts of styrylphenol polyoxyethylene ether and calcium dodecyl benzene sulfonate compound emulsifier; 5 parts of sodium carboxymethylcellulose (CMC) and 4 parts of rose essence.
Mixing the coating agent with soybean seed at a ratio of 1: 800.
The yield of the soybean per mu is 183.3 kilograms per mu, and compared with the seed coating agent produced in China, the yield is increased by 13.5 percent on average, and the income is increased by 87.3 percent; compared with the imported seed coating agent, the yield is increased by 5 percent, and the income is increased by 35.2 yuan; the input-output ratio was 1: 37.6.
Comparative example 7
The soybean powder seed coating agent comprises the following components: 25 parts of carbendazim, 15 parts of thiram, 15 parts of fipronil, 5 parts of boric acid, 5 parts of borax, 4 parts of ammonium molybdate, 10 parts of magnesium sulfate, 3 parts of trehalose, 2 parts of organic silicon, 3 parts of polyvinyl alcohol or naphthalene sulfonic acid formaldehyde condensation compound (NNO), and 3 parts of styrylphenol polyoxyethylene ether and calcium dodecyl benzene sulfonate compound emulsifier; 5 parts of sodium carboxymethylcellulose (CMC) and 4 parts of rose essence.
Mixing the coating agent with soybean seed at a ratio of 1: 800.
The yield of the soybean per mu is 182.5 kilograms per mu, the yield is increased by 13 percent on average compared with the seed coating agent produced in China, and the income is increased by 84.1 percent; compared with the imported seed coating agent, the yield is increased by 4.6 percent, and the income is increased by 32 yuan; the input-output ratio was 1: 38.6.
Comparative example 8
The soybean powder seed coating agent comprises the following components: 25 parts of carbendazim, 15 parts of thiram, 15 parts of fipronil, 5 parts of boric acid, 5 parts of borax, 4 parts of ammonium molybdate, 10 parts of magnesium sulfate, 5 parts of trehalose, 4 parts of polyvinyl alcohol or naphthalene sulfonic acid formaldehyde condensate (NNO), and 3 parts of styrylphenol polyoxyethylene ether and calcium dodecyl benzene sulfonate composite emulsifier; 5 parts of sodium carboxymethylcellulose (CMC) and 4 parts of rose essence.
Mixing the coating agent with soybean seed at a ratio of 1: 800.
The yield of the soybean per mu is 173.2 kilograms per mu, and compared with the seed coating agent produced in China, the yield is increased by 7.3 percent on average, and the income is increased by 46.9 percent; compared with the imported seed coating agent, the yield is reduced by 0.7%; the input-output ratio is 1: 20.6.
Claims (9)
1. A soybean seed coating agent is prepared from the following raw materials: bactericide, insecticide, trace elements, drought resistance agent, growth regulator, dispersant, emulsifier, film-forming agent and color-warning agent;
wherein, the bactericide and the insecticide are 50 to 60 parts by mass; 20-30 parts of trace elements; 2-6 parts of drought-resistant agent and growth regulator; 2-5 parts of a dispersant; 2-3 parts of an emulsifier; 4-6 parts of a film forming agent; and 2-4 parts of a color warning agent.
2. The coating agent according to claim 1, characterized in that:
the bactericide and the insecticide consist of carbendazim, thiram and fipronil in a mass ratio of 5:3:3,
wherein, the carbendazim is 50 percent of wettable powder, and the thiram is 50 percent of wettable powder;
the trace elements consist of boric acid, borax, ammonium molybdate and magnesium sulfate, wherein the mass ratio of the boric acid to the borax to the ammonium molybdate to the magnesium sulfate can be 5:5:4: 10;
the drought-resistant agent and the growth regulator are trehalose (C)12H22O11) 1-chloromethyl silatrane [ ClCH ] as organosilicon preparation2Si(OCH2CH2)3N]Powder, wherein the mass ratio of the trehalose, the ammonium molybdate and the organic silicon preparation can be 2: 3;
the dispersing agent is polyvinyl alcohol or a naphthalenesulfonic acid formaldehyde condensate;
the emulsifier is a styryl phenol polyoxyethylene ether and calcium dodecyl benzene sulfonate compound emulsifier;
the film forming agent is sodium carboxymethyl cellulose (CMC);
the color warning agent is rose essence.
3. The coating agent according to claim 2, wherein: the soybean seed coating agent is prepared from the following raw materials: 25 parts of carbendazim, 15 parts of thiram, 15 parts of fipronil, 5 parts of boric acid, 5 parts of borax, 4 parts of ammonium molybdate, 10 parts of magnesium sulfate, 2 parts of trehalose, 3 parts of organic silicon, 1-4 parts of polyvinyl alcohol or naphthalene sulfonic acid formaldehyde condensation compound (NNO) and 2-3 parts of styrylphenol polyoxyethylene ether and calcium dodecyl benzene sulfonate compound emulsifier; 5 parts of sodium carboxymethylcellulose (CMC) and 4 parts of rose essence.
4. The coating agent according to any one of claims 1 to 3, characterized in that: the coating agent for soybean seeds is powder with the fineness of 1000 meshes or 400-500 meshes.
5. A method for preparing the coating agent of any one of claims 1 to 4, comprising:
1) mixing carbendazim, thiram and fipronil, and performing ball milling to obtain a component A;
2) mixing other raw materials, adding the mixture into a ball mill for the component A, and continuously ball-milling until a mixed raw material with the fineness of 400-500 meshes is obtained as a component B;
3) or continuously placing the component B into a jet mill for carrying out superfine grinding for 15-30 minutes until the particle size reaches 1000 meshes.
6. The method of claim 5, wherein: the technological parameters of the ball milling are as follows: the grinding ball grading is 1:2:4, the rotating speed of the ball mill is 170r/min, the ball milling time is 30min, and the ball material ratio is 20: 1;
the technological parameters of the superfine grinding are as follows: the micro-grinding time is 25min, the micro-grinding frequency is 23-26Hz, and the micro-grinding wind speed is 1.4-1.8 m/s; the engine was operated at 60% of the critical speed.
7. Use of the coating agent of any one of claims 1 to 4 for soybean planting.
8. The method of using the coating agent of any one of claims 1 to 4, which is: and (3) uniformly mixing the soybean seed coating agent and the soybean seeds.
9. The method of claim 8, wherein: the mass ratio of the coating agent to the seeds is 1: 700-800.
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