Seed treating agent and application thereof

Abstract

The invention relates to the technical field of pesticides, and discloses a seed treatment agent and application thereof. The seed treatment agent comprises an active component and an auxiliary agent, wherein the active ingredients are prepared from flonicamid, thiram and azoxystrobin. The invention also relates to application of the seed treating agent in prevention and treatment of diseases and insect pests of food crops and oil crops. The invention provides the seed treatment agent containing the three active ingredients of flonicamid, thiram and azoxystrobin, the product stability is improved, the seed treatment agent can tolerate high and low temperature intervals, meanwhile, the product suspension rate is high, the coating falling rate is low, the seed treatment safety is good, and the seed treatment agent can be subsequently used in different countries and regions and is beneficial to large-scale popularization and application. The seed treatment agent provided by the invention is simple in preparation process and simple and convenient to operate.

Description

Technical Field

[0001] This invention relates to the field of pesticide technology, specifically to a seed treatment agent and its application. Background Technology

[0002] Flupyradifurone is a pyridine amide insecticide discovered by Ishihara Sangyo Co., Ltd. of Japan. It inhibits aphid feeding by suppressing the penetration of their stylets into plant tissues. Flupyradifurone has good systemic properties, strong penetration, and a long residual effect. It can be used on fruit trees, grains, potatoes, rice, cotton, vegetables, beans, melons, tea trees, sunflowers, and greenhouse ornamental plants to control piercing-sucking pests.

[0003] Azoxystrobin is a novel methoxyacrylate fungicide developed by Syngenta, Inc. of the UK. It inhibits mitochondrial respiration, blocking energy synthesis in pathogens, and exhibits broad-spectrum control effects against diseases caused by ascomycetes and basidiomycetes. Azoxystrobin offers protective, curative, and eradicative effects, and can be used for foliar, seed, and soil treatment; it is applicable for disease control in grains, rice, grapes, potatoes, vegetables, fruit trees, legumes, and other crops.

[0004] Thiram is an organosulfur fungicide, belonging to the broad-spectrum protective fungicide category. It has a wide range of applications, providing good control of downy mildew, blight, anthracnose, cereal smut, and seedling yellow wilt in various crops. Thiram can be used for foliar application, seed treatment, and soil treatment.

[0005] Crop seeds and seedlings are highly susceptible to damage and infection from various underground and above-ground pests and pathogens, making them the most vulnerable stage in crop growth. Infection of seeds and seedlings by pathogens leads to diseased or dead seedlings, reducing the effective number of plants per unit area and causing significant yield reduction and quality decline. Common pests and diseases affecting field crops such as peanuts, cotton, soybeans, and potatoes include root rot, leaf spot, stem rot, damping-off, aphids, grubs, cutworms, and wireworms. These pests and diseases are often multiple, occurring at different times and locations, making control difficult and typically requiring multiple applications of pesticides.

[0006] Currently, there are no reports of compound compositions of flonicamid, thiram, and pyraclostrobin, nor of seed treatment agents (such as seed treatment suspensions or seed treatment dispersible powders) combining these three ingredients. Seed treatment agents are pesticide formulations made from active ingredients (insecticides, fungicides, plant growth regulators, trace elements, etc.), film-forming agents, wetting agents, and dispersants. They coat the seeds with a relatively strong film, providing a protective layer and achieving the purposes of preventing pests and diseases, improving germination rate, and increasing yield. Used during the sowing stage, they are simple to operate, reducing farmers' application costs and workload, and have excellent application prospects.

[0007] Currently, there are reports on pairwise combinations of flonicamid + azoxystrobin, flonicamid + thiram, and thiram + azoxystrobin, but no reports on ternary combinations of flonicamid, azoxystrobin, and thiram. Regarding formulations, there are also no reports on ternary mixtures of seed treatment suspensions or seed treatment dispersible powders. Summary of the Invention

[0008] The purpose of this invention is to overcome the problems existing in the prior art and provide a seed treatment agent and its application.

[0009] This invention uses flonicamid, pyraclostrobin, and thiram as active ingredients to prepare different types of seed treatment formulations, which are easy to use and can ensure that seedling crops are protected from pests and diseases such as aphids, thrips, planthoppers, damping-off, root rot, etc., thus expanding the control spectrum and slowing down the development of pesticide resistance.

[0010] To achieve the above objectives, a first aspect of the present invention provides a seed treatment agent, wherein the seed treatment agent comprises an active ingredient and an adjuvant; wherein the active ingredient comprises flonicamid, thiram and pyraclostrobin.

[0011] A second aspect of the present invention provides the application of the seed treatment agent according to the first aspect in the prevention and control of diseases and pests in grain crops and oil crops.

[0012] The beneficial technical effects achieved by the present invention through the above technical solution are as follows:

[0013] This invention provides a seed treatment agent containing three active ingredients: flonicamid, thiram, and azoxystrobin. This improves product stability, enabling it to withstand high and low temperature ranges. Simultaneously, the product exhibits high suspension rate, low coating shedding rate, and good seed treatment safety, making it suitable for use in different countries and regions, and facilitating widespread application. The seed treatment agent provided by this invention has a simple preparation process and is easy to operate. Detailed Implementation

[0014] The endpoints and any values ​​of the ranges disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein.

[0015] The first aspect of the present invention provides a seed treatment agent, wherein the seed treatment agent comprises an active ingredient and an adjuvant; The active ingredients include flonicamid, thiram and pyraclostrobin.

[0016] This invention provides a seed treatment agent that uses flonicamid, thiram and pyraclostrobin as active ingredients simultaneously, filling a gap in the prior art.

[0017] Different types of seed treatment formulations, such as seed treatment suspensions and seed treatment dispersible powders, can be prepared by adding pesticide-acceptable adjuvants disclosed in the prior art to flupyradifurone, thiram, and pyraclostrobin. Furthermore, by optimizing the formulations and adjuvants of various formulations, more effective formulations can be obtained.

[0018] In some embodiments of the present invention, the seed treatment agent is a seed treatment suspension or a seed treatment dispersible powder.

[0019] In some embodiments of the present invention, the content of the active ingredient in the seed treatment agent is 10-80%, preferably 10-50%, or 15-60%, or 15-45%. In the present invention, when the seed treatment agent is a seed treatment suspension, the content of the active ingredient is 10-50%, preferably 15-45%; when the seed treatment agent is a seed treatment dispersible powder, the content of the active ingredient is 10-80%, preferably 15-60%.

[0020] In some embodiments of the present invention, the additives include at least one of dispersants, wetting agents, and film-forming agents.

[0021] In some embodiments of the present invention, the dispersant is selected from alkylnaphthalene sulfonate formaldehyde condensate, sodium lignosulfonate, alkylphenol polyoxyethylene ether sulfate, alkylphenol polyoxyethylene ether phosphate, polycarboxylate, and polyoxyethylene. At least one of polyoxypropylene block copolymer, sodium alkylphenol sulfonate, alkylphenol polyoxyethylene ether formaldehyde condensate sulfonate and sodium naphthalene sulfonate formaldehyde condensate, preferably a combination of alkylphenol polyoxyethylene ether sulfate and polycarboxylate in a mass ratio of 1:1-3 or a combination of sodium naphthalene sulfonate formaldehyde condensate and calcium lignin sulfonate in a mass ratio of 1:1-3.

[0022] In some embodiments of the present invention, when the seed treatment agent is a seed treatment suspension, the dispersant is selected from at least one of alkylnaphthalene sulfonate formaldehyde condensate, sodium lignosulfonate, alkylphenol polyoxyethylene ether sulfate, alkylphenol polyoxyethylene ether phosphate and polycarboxylate, preferably a combination of alkylphenol polyoxyethylene ether sulfate and polycarboxylate in a mass ratio of 1:1-3.

[0023] In some embodiments of the present invention, when the seed treatment agent is a seed treatment dispersible powder, the dispersant is calcium lignosulfonate or polyoxyethylene. At least one of polyoxypropylene block copolymer, sodium alkylphenol sulfonate, alkylphenol polyoxyethylene ether formaldehyde condensate sulfonate, sodium naphthalene sulfonate formaldehyde condensate, and polycarboxylate, preferably a combination of sodium naphthalene sulfonate formaldehyde condensate and calcium lignin sulfonate in a mass ratio of 1:1-3.

[0024] In some embodiments of the present invention, the wetting agent is selected from at least one of ethylene oxide-propylene oxide block polyether, fatty alcohol polyoxyethylene ether, fatty alcohol polyoxyethylene ether sulfate, sodium dodecyl sulfate, sodium tetradecyl sulfate, sodium dodecylbenzene sulfonate, sodium alkylnaphthalene sulfonate, sodium alkylphenol polyoxyethylene ether sulfate, and sodium lignosulfonate, preferably ethylene oxide-propylene oxide block polyether or a combination of sodium dodecyl sulfate and sodium lignosulfonate in a mass ratio of 1:1-3.

[0025] In some embodiments of the present invention, when the seed treatment agent is a seed treatment suspension, the wetting agent is selected from at least one of ethylene oxide-propylene oxide block polyether, fatty alcohol polyoxyethylene ether, and fatty alcohol polyoxyethylene ether sulfate, preferably ethylene oxide-propylene oxide block polyether.

[0026] In some embodiments of the present invention, when the seed treatment agent is a seed treatment dispersible powder, the wetting agent is selected from at least one of sodium dodecyl sulfate, sodium tetradecyl sulfate, sodium dodecylbenzene sulfonate, sodium alkylnaphthalene sulfonate, sodium alkylphenol polyoxyethylene ether sulfate, and sodium lignin sulfonate, preferably a combination of sodium dodecyl sulfate and sodium lignin sulfonate in a mass ratio of 1:1-3.

[0027] In some embodiments of the present invention, the film-forming agent is selected from at least one of polyvinylpyrrolidone, polyvinyl alcohol, carboxymethyl cellulose, carboxypropyl methyl cellulose and sodium alginate, preferably polyvinylpyrrolidone.

[0028] In some embodiments of the present invention, when the seed treatment agent is a seed treatment suspension, the film-forming agent is selected from at least one of polyvinylpyrrolidone, polyvinyl alcohol, carboxypropyl methylcellulose and sodium alginate, preferably polyvinylpyrrolidone.

[0029] In some embodiments of the present invention, when the seed treatment agent is a seed treatment dispersible powder, the film-forming agent is selected from at least one of polyvinylpyrrolidone, carboxymethyl cellulose, polyvinyl alcohol and hydroxypropyl methyl cellulose, preferably polyvinylpyrrolidone.

[0030] In some embodiments of the present invention, when the seed treatment agent is a seed treatment suspension, the adjuvant further includes at least one of a thickener, antifreeze, defoamer, preservative, pH adjuster, warning color and water.

[0031] In some embodiments of the present invention, the seed treatment suspension comprises the following raw materials in weight percentage: 10-50% active ingredient, 2-10% dispersant, 1-6% wetting agent, 0.5-6% film-forming agent, 0.1-1% thickener, 1-10% antifreeze agent, 0.1-1% defoamer, 0.1-2% preservative, 0.1-1% pH adjuster, 1-10% warning color, and water to make up to 100%.

[0032] In some embodiments of the present invention, the seed treatment suspension comprises the following raw materials in weight percentage: 15-45% active ingredient, 2-8% dispersant, 1-4% wetting agent, 1-4% film-forming agent, 0.5-1% thickener, 1-8% antifreeze agent, 0.1-0.5% defoamer, 0.1-1% preservative, 0.1-0.5% pH adjuster, 1-8% warning color, and water to make up to 100%.

[0033] In some embodiments of the present invention, the seed treatment suspension comprises the following raw materials in weight percentage: 39.5% active ingredient, 5% dispersant, 2% wetting agent, 3% film-forming agent, 0.65% thickener, 5% antifreeze, 0.2% defoamer, 0.4% preservative, 0.17% pH adjuster, 6% warning color, and water to make up 100%.

[0034] In some embodiments of the present invention, the thickener is selected from at least one of magnesium aluminum silicate, xanthan gum and sodium carboxymethyl cellulose, preferably a combination of magnesium aluminum silicate and xanthan gum in a mass ratio of 1-3:1.

[0035] In some embodiments of the present invention, the defoamer is selected from silicone oil, C 10 -C 20 Saturated fatty acid compounds and C8-C 10 At least one of the fatty alcohols, preferably silicone oil.

[0036] In some embodiments of the present invention, the antifreeze is selected from at least one of glycerol, ethylene glycol and propylene glycol, preferably propylene glycol.

[0037] In some embodiments of the present invention, the preservative is selected from at least one of paraformaldehyde, Kathon and sodium p-hydroxybenzoate, preferably Kathon.

[0038] In some embodiments of the present invention, the pH adjuster is selected from at least one of potassium dihydrogen phosphate, citric acid, sodium citrate and potassium citrate, preferably citric acid.

[0039] In some embodiments of the present invention, the warning color is selected from at least one of Acid Red and Water-based Rose Red, preferably Acid Red.

[0040] In some embodiments of the present invention, when the seed treatment agent is a seed treatment dispersible powder, the adjuvant further includes at least one of an anti-caking agent, a warning color, and a filler.

[0041] In some embodiments of the present invention, the seed treatment dispersible powder comprises the following raw materials in weight percentage: 10-80% active ingredient, 4-10% dispersant, 1-6% wetting agent, 1-8% film-forming agent, 1-8% anti-caking agent, 1-10% warning color, and filler to make up 100%.

[0042] In some embodiments of the present invention, the seed treatment dispersible powder comprises the following raw materials in weight percentage: 15-60% active ingredient, 4-8% dispersant, 1-4% wetting agent, 1-6% film-forming agent, 1-6% anti-caking agent, 1-8% warning color, and filler to make up 100%.

[0043] In some embodiments of the present invention, the seed treatment dispersible powder comprises the following raw materials in weight percentage: 15-60% active ingredient, 4-8% dispersant, 1-4% wetting agent, 1-6% film-forming agent, 1-6% anti-caking agent, 1-8% warning color, and filler to make up 100%.

[0044] In some embodiments of the present invention, the anti-caking agent is selected from at least one of silica, talc and bentonite, preferably silica.

[0045] In some embodiments of the present invention, the warning color is selected from at least one of Acid Red, Agricultural Red and Water-based Rose Red, preferably Agricultural Red.

[0046] In some embodiments of the present invention, the filler is selected from at least one of kaolin, diatomaceous earth and ammonium sulfate, preferably diatomaceous earth.

[0047] The seed treatment suspension of the present invention can be prepared by the following steps: Wetting agent, dispersant, film-forming agent, defoamer, preservative, pH adjuster and water are mixed by high-speed shearing, then flonicamid, thiram and pyraclostrobin are added, ground and then warning color is added for mixing, then antifreeze and thickener are added and sheared to obtain a seed treatment suspension of flonicamid, thiram and pyraclostrobin.

[0048] Specifically, the present invention first involves high-speed shear mixing of wetting agent, dispersant, film-forming agent, defoamer, preservative, pH adjuster, and water, preferably in a mixing tank; then, the active ingredients flonicamid, thiram, and pyraclostrobin are added to the mixture, followed by sand milling and detection using a laser particle size analyzer until the product particle size D is determined. 90Below 3μm; add warning color for mixing, then add antifreeze and thickener and perform high-speed shearing, mix evenly to obtain a seed treatment suspension containing flupyradifurone, thiram and pyraclostrobin.

[0049] The seed treatment dispersible powder of the present invention can be prepared by the following steps: Flupyradifon, thiram, azoxystrobin, dispersant, wetting agent, film-forming agent, anti-caking agent, warning colorant, and filler are mixed evenly in a mixer, and then pulverized to a particle size D using an air jet mill. 90 At a particle size below 20 μm, a seed-treated dispersible powder containing flupyradifurone, thiram, and pyraclostrobin is obtained.

[0050] A second aspect of the present invention provides the application of the seed treatment agent according to the first aspect in the prevention and control of diseases and pests in grain crops and oil crops.

[0051] In some embodiments of the present invention, the pests mentioned are selected from at least one of aphids, thrips, and planthoppers.

[0052] In some embodiments of the present invention, the diseases mentioned in the pests and diseases are selected from at least one of damping-off, root rot, and seed blight.

[0053] The seed treatment suspension and seed treatment dispersible powder provided by this invention can achieve formulations with good stability and excellent performance through the selection of adjuvants, and effectively promote the efficacy of pesticide active ingredients. This invention improves product stability, enabling it to withstand high and low temperature ranges from -10℃ to 54℃, effectively solving the problem of environmental changes during transportation affecting product quality.

[0054] The present invention will be described in detail below through embodiments.

[0055] Unless otherwise specified in the following examples and comparative examples, all conditions were performed under standard conditions or conditions recommended by the manufacturer. Reagents or instruments used, unless otherwise specified, are all commercially available products.

[0056] Unless otherwise specified, all percentages below are weight percentages (wt%).

[0057] In the following examples, flonicamid, thiram and pyraclostrobin are all commercially available, and other adjuvants are also commercially available products.

[0058] Examples 1-11 Prepare a series of seed treatment suspensions according to the formula in Table 1 (water to make up to 100%).

[0059] The preparation methods for various sub-treatment suspensions are as follows: Wetting agent, dispersant, film-forming agent, defoamer, preservative, pH adjuster, and water are mixed under high-speed shear; flonicamid, thiram, and pyraclostrobin are added; and the mixture is ground to a particle size D. 90 The sample was less than 3µm, then a warning color was added for mixing, followed by the addition of antifreeze and thickener for shearing, to obtain a seed treatment suspension containing flupyradifurone, thiram and pyraclostrobin.

[0060] The following are some of the raw materials involved in Table 1: Alkyl naphthalene sulfonate formaldehyde condensate: Morwet D-425; Fatty alcohol polyoxyethylene ether: AEO-7; Polyvinylpyrrolidone: PVPK30; Sodium lignosulfonate: REAX 85A; Ethylene oxide-propylene oxide block polyether: PE6400; Fatty alcohol polyoxyethylene ether sulfate: SP-SES 550N; Polycarboxylate: Agrilan 788.

[0061] Table 1

[0062]

[0063]

[0064] Test Example 1 The seed treatment suspension products prepared in Examples 1-11 above were tested for film-forming time, shedding rate, suspension rate, and uniformity, according to the method recorded in the master's thesis of Chen Fujia, "Research on Preparation and Quality Testing Method of 15% K-Foam Suspension Seed Coating Agent". The results are shown in Table 2 below.

[0065] Table 2

[0066] As can be seen from Table 2, the seed treatment suspension products prepared in Examples 1-10 of this invention are all qualified, with the products in Examples 7-10 using preferred adjuvants exhibiting the best performance. However, the product in Example 11, due to improper selection of adjuvants, suffers from low suspension rate, long film-forming time, high shedding rate, low uniformity, and poor stability, failing to meet the requirements.

[0067] Examples 12-22 Prepare a series of seed treatment dispersible powders according to the formula in Table 3 (filler replenishment to 100%).

[0068] The preparation method of various sub-treatment dispersible powders is as follows: Flupyradifurone, Thiram, Azoxystrobin, dispersant, wetting agent, film-forming agent, anti-caking agent, warning color, and filler are mixed evenly in a mixer, and then pulverized to a particle size of less than 20μm by an air jet mill.

[0069] The following are some of the raw materials involved in Table 3: Polyoxyethylene Polyoxypropylene block copolymer: DOWFAX-D800; Sodium dodecyl sulfate: K12; Sodium lignosulfonate: REAX 85A.

[0070] Table 3

[0071] Test Example 2 The products prepared in Examples 12-22 above were tested for suspension rate, film-forming time, shedding rate and uniformity, according to the method recorded in the master's thesis of Yang Dehui, "Development of Three Cotton Seed Treatment Dispersible Powders and Their Control Effect on Cotton Aphids". The flowability of the seed treatment dispersible powder after pressurized accelerated storage was tested according to the method of CIPAC MT 46.1.1, and the results are shown in Table 4.

[0072] Table 4

[0073] As shown in Table 4, the seed-treated dispersible powder products prepared in Examples 12-21 of this invention are all qualified, with the products of Examples 18-21, which use preferred adjuvants, exhibiting the best performance. However, the product of Example 22, due to improper selection of adjuvants, suffers from low suspension rate, long film-forming time, high shedding rate, low uniformity, and poor stability, failing to meet the requirements.

[0074] Test Example 3: Field Efficacy Trial Test material: The cotton variety used in the test was "Lu Mian Yan 37".

[0075] Test reagents: Flupyradifurone-thiram-pyraclostrobin seed treatment suspensions obtained in Examples 1, 7 and 11, and Flupyradifurone-thiram-pyraclostrobin seed treatment dispersible powders obtained in Examples 14, 18 and 22.

[0076] Experimental methods: The experiment was conducted in Xiajin County, Dezhou City, Shandong Province in 2024, with a total of 2 treatments.

[0077] Treatment 1: Seeds were not coated and served as a blank control; Treatment 2: Seeds were coated with the flonicamid-thiram-pyraclostrobin seed treatment suspension obtained in Examples 1, 7 and 11, and the flonicamid-thiram-pyraclostrobin seed treatment dispersible powder obtained in Examples 14, 18 and 22. Among them, the flonicamid-thiram-pyraclostrobin seed treatment suspension obtained in Examples 1, 7 and 11, and the flonicamid-thiram-pyraclostrobin seed treatment dispersible powder obtained in Examples 14, 18 and 22 were used for seed coating at an active ingredient dosage of 300g / 100kg of seeds. The corresponding amount of preparation for each treatment was weighed according to the active ingredient dosage, diluted with an appropriate amount of water and stirred evenly to form a slurry (the ratio of slurry to seeds was 1:50-100). The seeds and slurry were thoroughly mixed, placed in a cool and ventilated place to dry, and then sown.

[0078] Randomized block design with 3 replicates and a cell size of 30m² 2 Approximately 140 seedlings were planted in each plot.

[0079] Survey items: Emergence rate: Seedlings begin to emerge in the field one week after cotton sowing. The number of seedlings is checked every 3 days until no more seedlings emerge. Germination is defined as the unfolding of cotyledons and the emergence of new leaves. The number of seedlings is recorded and the emergence rate is calculated.

[0080] Aphid control efficacy: A survey of aphid occurrence in cotton seedlings was conducted 35 days after sowing. The number of aphids in each plot of 20 consecutive plants was counted, as well as the number of aphids on the whole plant. The control efficacy of each treatment on seedling aphids was calculated.

[0081] Control efficacy (%) = [(Number of aphids in the blank control area - Number of aphids in the treatment area) / Number of aphids in the blank control area] × 100% Table 5 shows the germination rate of cotton seeds treated with different agents and their control efficacy against cotton aphids.

[0082] Table 5

[0083] As can be seen from the experimental results in Table 5, the combination of flonicamid, thiram and pyraclostrobin can effectively improve seed germination rate and control cotton seedling aphids. The efficacy of the drug can be effectively improved by selecting the appropriate adjuvants.

[0084] The preferred embodiments of the present invention have been described in detail above; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention, including combinations of various technical features in any other suitable manner. These simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A seed treatment agent, characterized in that, The seed treatment agent includes active ingredients and adjuvants; The active ingredients include flonicamid, thiram and pyraclostrobin.

2. The seed treatment agent according to claim 1, wherein, The seed treatment agent is a seed treatment suspension or a seed treatment dispersible powder; Preferably, the content of the active ingredient in the seed treatment agent is 10-80%, more preferably 10-50%, or 15-60%, or 15-45%.

3. The seed treatment agent according to claim 1 or 2, wherein, The additives include at least one of dispersants, wetting agents, and film-forming agents; Preferably, the dispersant is selected from alkylnaphthalene sulfonate formaldehyde condensate, sodium lignosulfonate, alkylphenol polyoxyethylene ether sulfate, alkylphenol polyoxyethylene ether phosphate, polycarboxylate, and polyoxyethylene. At least one of polyoxypropylene block copolymer, sodium alkylphenol sulfonate, sodium alkylphenol polyoxyethylene ether formaldehyde condensate and sodium naphthalene sulfonate formaldehyde condensate, preferably a combination of alkylphenol polyoxyethylene ether sulfate and polycarboxylate in a mass ratio of 1:1-3 or a combination of sodium naphthalene sulfonate formaldehyde condensate and calcium lignin sulfonate in a mass ratio of 1:1-3. Preferably, the wetting agent is selected from at least one of ethylene oxide-propylene oxide block polyether, fatty alcohol polyoxyethylene ether, fatty alcohol polyoxyethylene ether sulfate, sodium dodecyl sulfate, sodium tetradecyl sulfate, sodium dodecylbenzene sulfonate, sodium alkylnaphthalene sulfonate, sodium alkylphenol polyoxyethylene ether sulfate, and sodium lignosulfonate, and is preferably ethylene oxide-propylene oxide block polyether or a combination of sodium dodecyl sulfate and sodium lignosulfonate in a mass ratio of 1:1-3; Preferably, the film-forming agent is selected from at least one of polyvinylpyrrolidone, polyvinyl alcohol, carboxymethyl cellulose, carboxypropyl methyl cellulose and sodium alginate, and is preferably polyvinylpyrrolidone.

4. The seed treatment agent according to claim 3, wherein, When the seed treatment agent is a seed treatment suspension, the adjuvants further include at least one of a thickener, antifreeze, defoamer, preservative, pH adjuster, warning color, and water.

5. The seed treatment agent according to claim 4, wherein, The seed treatment suspension comprises the following raw materials by weight percentage: 10-50% active ingredient, 2-10% dispersant, 1-6% wetting agent, 0.5-6% film-forming agent, 0.1-1% thickener, 1-10% antifreeze agent, 0.1-1% defoamer, 0.1-2% preservative, 0.1-1% pH adjuster, 1-10% warning color, and water to make up to 100%. Preferably, the seed treatment suspension comprises the following raw materials in weight percentage: 15-45% active ingredient, 2-8% dispersant, 1-4% wetting agent, 1-4% film-forming agent, 0.5-1% thickener, 1-8% antifreeze agent, 0.1-0.5% defoamer, 0.1-1% preservative, 0.1-0.5% pH adjuster, 1-8% warning color, and water to make up to 100%. Preferably, the seed treatment suspension comprises the following raw materials in weight percentage: 39.5% active ingredient, 5% dispersant, 2% wetting agent, 3% film-forming agent, 0.65% thickener, 5% antifreeze, 0.2% defoamer, 0.4% preservative, 0.17% pH adjuster, 6% warning color, and water to make up 100%.

6. The seed treatment agent according to claim 4 or 5, wherein, The thickener is selected from at least one of magnesium aluminum silicate, xanthan gum and sodium carboxymethyl cellulose, preferably a combination of magnesium aluminum silicate and xanthan gum in a mass ratio of 1-3:1; Preferably, the defoamer is selected from silicone oil, C 10 -C 20 Saturated fatty acid compounds and C8-C 10 At least one of fatty alcohols, preferably silicone oil; Preferably, the antifreeze is selected from at least one of glycerol, ethylene glycol and propylene glycol, and is preferably propylene glycol; Preferably, the preservative is selected from at least one of paraformaldehyde, Kathon, and sodium p-hydroxybenzoate, with Kathon being the most preferred; Preferably, the pH adjuster is selected from at least one of potassium dihydrogen phosphate, citric acid, sodium citrate, and potassium citrate, with citric acid being the most preferred; Preferably, the warning color is selected from at least one of Acid Red and Water-based Rose Red, with Acid Red being the most preferred.

7. The seed treatment agent according to claim 3, wherein, When the seed treatment agent is a seed treatment dispersible powder, the adjuvant also includes at least one of an anti-caking agent, a warning color, and a filler.

8. The seed treatment agent according to claim 7, wherein, The seed treatment dispersible powder comprises the following raw materials by weight percentage: 10-80% active ingredient, 4-10% dispersant, 1-6% wetting agent, 1-8% film-forming agent, 1-8% anti-caking agent, 1-10% warning color, and filler to make up 100%; Preferably, the seed treatment dispersible powder comprises the following raw materials by weight percentage: 15-60% active ingredient, 4-8% dispersant, 1-4% wetting agent, 1-6% film-forming agent, 1-6% anti-caking agent, 1-8% warning color, and filler to make up 100%; Preferably, the seed treatment dispersible powder comprises the following raw materials in weight percentage: 41% active ingredient, 4% dispersant, 2.5% wetting agent, 3% film-forming agent, 4% anti-caking agent, 5% warning color, and filler to make up 100%.

9. The seed treatment agent according to claim 7 or 8, wherein, The anti-caking agent is selected from at least one of silica, talc and bentonite, preferably silica; Preferably, the warning color is selected from at least one of Acid Red, Agricultural Crimson, and Water-based Rose Red, with Agricultural Crimson being the most preferred. Preferably, the filler is selected from at least one of kaolin, diatomaceous earth and ammonium sulfate, and more preferably diatomaceous earth.

10. The application of a seed treatment agent according to any one of claims 1-9 in the prevention and control of diseases and pests in grain crops and oil crops; Preferably, the pests mentioned are selected from at least one of aphids, thrips, and planthoppers; Preferably, the diseases mentioned are selected from at least one of damping-off, root rot, and seed blight.

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