An agricultural formulation containing a nicotinic or bisamide compound

Abstract

The present application belongs to the field of insecticides, and relates to an agricultural preparation containing a nicotine or bisamide compound. The preparation is composed of an active ingredient, a surfactant and a functional auxiliary agent; wherein the active ingredient accounts for 0.2-60% of the mass of the preparation, and the active ingredient is a nicotine compound or a bisamide compound. The lignin auxiliary agent is used in combination with starch in the present application, and can achieve excellent adhesion enhancement effect at a suitable ratio. Lignin is the second most abundant aromatic compound after cellulose, and can be obtained from renewable resources. The production capacity of lignin is outstanding in the world, and lignin is nontoxic and inexpensive.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of insecticides, and relates to an agricultural preparation containing a neonicotinoid or a diacylhydrazine compound. BACKGROUND

[0002] There are many kinds of underground pests, which are harmful and widely distributed, and are one of the important disasters in agricultural production. The underground pests mainly include scarabaeidae, grub, golden needleworm, mole cricket and the like, and can harm the seeds, seedlings, roots and stems of crops. The underground pests can harm the seeds, seedlings, roots and stems of crops, and can also cause seedling and ridge breakage. According to statistics, the economic loss caused by the underground pests is up to 10 billion yuan per year. Therefore, the prevention and control of the underground pests is an important measure to ensure the high and stable yield of crops.

[0003] The neonicotinoid compound is a key pesticide for the prevention and control of the underground pests. At present, the neonicotinoid compounds mainly used for the prevention and control of the underground pests in China include imidacloprid, thiamethoxam, clothianidin and dinotefuran, among which imidacloprid, thiamethoxam and clothianidin are mainly used. The mechanism of the neonicotinoid insecticide is that the neonicotinoid insecticide is selectively combined with the acetylcholine receptor as a nicotinyl acetylcholine receptor agonist, competes with the acetylcholine, blocks the normal conduction of the central nervous system, and then causes the paralysis and death of the insects. However, the neonicotinoid compound itself has a problem of high solubility in water, which is a long-term disadvantage for the application of the seed coating agent. The seed coating agent is easily lost with rainwater after the seed coating, which causes the safety problem.

[0004] Since the underground pests live and harm in the underground, the prevention and control should follow the principle of prevention first and comprehensive prevention. For the prevention, the most effective way is the pesticide control. The pesticide control generally adopts two means. One is seed dressing, that is, the seed treatment agent technology is used, the pesticide solution is prepared according to the requirements, is mixed with the seeds, is uniformly dried and then is sowed, so that the underground pests can be effectively controlled. The other is soil treatment, that is, the granules containing the effective component are used to mix the soil before sowing, so that the soil can be uniformly applied on the ground and part of the soil can be adsorbed in the soil.

[0005] For the two means for the prevention and control of the underground pests, the problem of the adhesion ability and degree of the pesticide exists. Whether the seed dressing application or the application of mixing the soil particles and adsorbing in the soil, the adhesion degree of the pesticide needs to be effectively improved. At present, the adhesion degree is basically improved by the means of the film-forming material or the high molecular polymer in the preparation formula. However, the actual effect of improving the adhesion ability and the environmental problem caused by the residue in the soil need to be effectively solved.

[0006] The problem has been an industry problem and needs to be researched and solved. SUMMARY

[0007] The present application aims to provide a nicotine or diamide compound-containing agricultural formulation.

[0008] To achieve the above-mentioned purpose, the present application adopts the technical solution of:

[0009] The nicotine or diamide compound-containing agricultural formulation is composed of active ingredients, surfactants and functional adjuvants; wherein the active ingredients account for 0.2-60% of the mass of the formulation, and the active ingredients are nicotine compounds or diamide compounds.

[0010] The functional adjuvant is corn starch and / or potato starch.

[0011] The surfactant is selected from one or more of fatty alcohol polyoxyethylene ether, polyoxyethylene polyoxypropylene ether block copolymer, sorbitan fatty acid ester polyoxyethylene ether, lignin sulfonate.

[0012] Further, the surfactant is selected from one or more of lignin sulfonate, macromolecular carboxylate, naphthalene sulfonate, naphthalene sulfonate formaldehyde condensate, alkylphenol polyoxyethylene ether formaldehyde condensate sulfonate, sodium dodecylbenzenesulfonate, sodium dodecyl sulfate, fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, polyoxyethylene polyoxypropylene ether block copolymer, sorbitan fatty acid ester polyoxyethylene ether; for example, including but not limited to YUS-FS3000, Ultrazine NA, AEO-5, 127FL, Tween-80, Borresperse NA, etc.

[0013] Preferably, the surfactant is selected from lignin sulfonate; for example, Ultrazine NA, Borresperse NA.

[0014] The mass ratio of the active ingredients to the total mass of the remaining components (surfactant and functional adjuvant) is 10:1-1:1; the mass ratio of the surfactant to the functional adjuvant is 2:1-3:1.

[0015] The nicotine compound is one or more of imidacloprid, thiamethoxam, clothianidin; the diamide compound is compound A.

[0016]

[0017] Compound A.

[0018] The type of the formulation can be seed treatment suspension concentrate, seed treatment emulsion, seed treatment dry powder, seed treatment microcapsule suspension concentrate, granules.

[0019] The preparation can also contain other auxiliary agents, for example:

[0020] The carrier is selected from one or more of water, S150#, clay, diatomite, bentonite, magnesium aluminum silicate, white carbon black, light calcium carbonate, carbon dioxide.

[0021] Thickening substances can also be included, which can be one or more of xanthan gum, gelatin, gum arabic, polyvinyl acetate, polyvinylpyrrolidone, magnesium aluminum silicate, polyethylene glycol, phenolic resin, sodium polyacrylate, polyurea prepolymer, styrene maleic anhydride copolymer, shellac, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, methyl cellulose and sodium alginate, which can improve the stability of the preparation to some extent.

[0022] Antifoaming agents can also be added as needed, which can be one or more of SAG1522, silicone, C8-10 fatty alcohol, phosphate ester, C10-20 saturated fatty acid (such as capric acid) and amide or others.

[0023] If long-term storage is required, preservatives can be added, which can be one or more of sodium benzoate, Kathon (2-methyl-4-isothiazolin-3-one and (B) 5-chloro-2-methyl-4-isothiazolin-3-one), potassium sorbate, sodium dehydroacetate or others.

[0024] If the pH of the system needs to be adjusted, hydrochloric acid, sodium hydroxide, etc. can also be added.

[0025] If color is required, colorants can be added, which can include dyes, pigments (including color powder and color paste), etc.

[0026] The agricultural preparation can be a seed treatment suspension concentrate, a seed treatment emulsion, a seed treatment microcapsule suspension concentrate, a seed treatment dry powder, a granule.

[0027] The above preparations can also be used in other underground pest control formulations that require improved adhesion.

[0028] The determination of adhesion, i.e. adhesion, is carried out according to 4.12 Adhesion in HG / T5443-2018 Thiamethoxam Seed Treatment Suspension Concentrate Product Standard.

[0029] Compared with the prior art, the technical scheme of the present application has the following advantages:

[0030] The present application finds that for the system of preparing corresponding seed treatment agents of nicotine and bisamide compounds, when lignin adjuvants are used in combination with starch, excellent adhesion enhancement effect can be achieved at a suitable ratio, lignin production is second only to cellulose, it is the most abundant aromatic compound that can be obtained from renewable resources, has outstanding production capacity worldwide, and is non-toxic and inexpensive. Lignin-based adsorbent material is one of the ways of high-value utilization of lignin. Lignin can introduce various chemical groups through its phenolic hydroxyl groups to meet product needs. Both lignin and starch are environmentally friendly and biodegradable substances. Compared with the film-forming substances of functional adjuvants in the prior art, the effect of solving the adhesion problem can be significantly improved, the drying time is shortened, and the technical scheme also has important environmental protection significance. DETAILED DESCRIPTION

[0031] The following specific examples are used to further illustrate the present application, but the present application is by no means limited to these examples, and methods well known in the industry are also included within the scope of the present application. The percentages and parts in the formula are by weight. Compound A is prepared according to the related description in (CN 112457288 B), and the dosage is added after being folded, the proportion of each component is weight percentage, and other raw materials are commercially available.

[0032] The present application aims to improve the adhesion degree under underground application conditions, and does not use conventional high molecular polymer film-forming substances, but instead uses lignin and plant starch as key substances for a pesticide for preventing and controlling underground pests.

[0033] Preparation formula examples

[0034] Comparative example 1-1. 12% imidacloprid seed treatment suspension concentrate

[0035] According to the requirements of the formula, imidacloprid 12%, YUS-FS3000 0.8%, magnesium aluminum silicate 1%, xanthan gum 0.2%, warning colorant Red 5%, polyvinyl alcohol 0.4%, and water is added to 100% according to the formula proportion, and is put into a sand mill for sanding. The 12% imidacloprid seed treatment suspension concentrate can be obtained.

[0036] Comparative example 1-2. 12% imidacloprid seed treatment suspension concentrate

[0037] According to the requirements of the formula, imidacloprid 12%, Ultrazine NA 0.8%, magnesium aluminum silicate 1%, xanthan gum 0.2%, warning colorant Red 5%, polyvinyl alcohol 0.4%, and water is added to 100% according to the formula proportion, and is put into a sand mill for sanding. The 12% imidacloprid seed treatment suspension concentrate can be obtained.

[0038] Example 1. 12% imidacloprid seed treatment suspension concentrate

[0039] According to the formula requirements, imidacloprid 12%, Ultrazine NA 0.8%, magnesium aluminum silicate 1%, xanthan gum 0.2%, warning colorant Red 5%, corn starch 0.4%, and water to 100% according to the formula proportion, put into sand mill for sanding, and the discharge can obtain 12% imidacloprid seed treatment suspension concentrate.

[0040] Comparative Example 2-1. 20% thiamethoxam seed treatment suspension concentrate

[0041] According to the formula requirements, thiamethoxam 20%, AEO-5 4%, magnesium aluminum silicate 0.8%, xanthan gum 0.1%, warning colorant Red 5%, polyvinyl alcohol 2%, and water to 100% according to the formula proportion, put into sand mill for sanding, and the discharge can obtain 20% thiamethoxam seed treatment suspension concentrate.

[0042] Comparative Example 2-2. 20% thiamethoxam seed treatment suspension concentrate

[0043] According to the formula requirements, thiamethoxam 20%, Ultrazine NA 4%, magnesium aluminum silicate 0.8%, xanthan gum 0.1%, warning colorant Red 5%, polyvinyl alcohol 2%, and water to 100% according to the formula proportion, put into sand mill for sanding, and the discharge can obtain 20% thiamethoxam seed treatment suspension concentrate.

[0044] Example 2. 20% thiamethoxam seed treatment suspension concentrate

[0045] According to the formula requirements, thiamethoxam 20%, Ultrazine NA 4%, magnesium aluminum silicate 0.8%, xanthan gum 0.1%, warning colorant Red 5%, corn starch 2%, and water to 100% according to the formula proportion, put into sand mill for sanding, and the discharge can obtain 20% thiamethoxam seed treatment suspension concentrate.

[0046] Comparative Example 3-1. 30% thiamethoxam seed treatment suspension concentrate

[0047] According to the formula requirements, thiamethoxam 30%, 127FL 4%, magnesium aluminum silicate 0.6%, xanthan gum 0.12%, warning colorant Red 7%, polyvinyl alcohol 2%, and water to 100% according to the formula proportion, put into sand mill for sanding, and the discharge can obtain 30% thiamethoxam seed treatment suspension concentrate.

[0048] Comparative Example 3-2. 30% thiamethoxam seed treatment suspension concentrate

[0049] According to the requirements of the formula, thiamethoxam 30%, Ultrazine NA 4%, magnesium aluminum silicate 0.6%, xanthan gum 0.12%, warning colorant Red 7%, polyvinyl alcohol 2%, and water to 100% according to the formula proportion, put into sand mill for sanding, the discharge can get 30% thiamethoxam seed treatment suspension concentrate.

[0050] Comparative example 3-30% thiamethoxam seed treatment suspension concentrate

[0051] According to the requirements of the formula, thiamethoxam 30%, Ultrazine NA 12%, magnesium aluminum silicate 0.6%, xanthan gum 0.12%, warning colorant Red 7%, corn starch 3%, and water to 100% according to the formula proportion, put into sand mill for sanding, the discharge can get 30% thiamethoxam seed treatment suspension concentrate.

[0052] Example 3. 30% thiamethoxam seed treatment suspension concentrate

[0053] According to the requirements of the formula, thiamethoxam 30%, Ultrazine NA 4%, magnesium aluminum silicate 0.6%, xanthan gum 0.12%, warning colorant Red 7%, corn starch 2%, and water to 100% according to the formula proportion, put into sand mill for sanding, the discharge can get 30% thiamethoxam seed treatment suspension concentrate.

[0054] Comparative example 4-1.40% clothianidin seed treatment suspension concentrate

[0055] According to the requirements of the formula, clothianidin A 40%, Tween-80 15%, magnesium aluminum silicate 0.2%, xanthan gum 0.08%, warning colorant Red 8%, polyvinyl alcohol 5%, and water to 100% according to the formula proportion, put into sand mill for sanding, the discharge can get 40% clothianidin seed treatment suspension concentrate.

[0056] Comparative example 4-2.40% clothianidin seed treatment suspension concentrate

[0057] According to the requirements of the formula, clothianidin 40%, Borresperse NA 15%, magnesium aluminum silicate 0.2%, xanthan gum 0.08%, warning colorant Red 8%, polyvinyl alcohol 5%, and water to 100% according to the formula proportion, put into sand mill for sanding, the discharge can get 40% clothianidin seed treatment suspension concentrate.

[0058] Example 4. 40% clothianidin seed treatment suspension concentrate

[0059] According to the requirements of the formula, clothianidin 40%, Borresperse NA 15%, magnesium aluminum silicate 0.2%, xanthan gum 0.08%, warning colorant Red 8%, corn starch 5%, and water to 100% according to the formula proportion, put into sand mill for sanding, and the discharge can obtain 40% clothianidin seed treatment suspension concentrate.

[0060] Comparative example 5. 10% clothianidin granules

[0061] According to the requirements of the formula, clothianidin 10%, diatomite 8% are mixed to obtain a master batch, then 5% polyvinyl alcohol is mixed with quartz sand to obtain 10% clothianidin granules.

[0062] Example 5. 10% clothianidin granules

[0063] According to the requirements of the formula, clothianidin 10%, diatomite 8% are mixed to obtain a master batch, then 5% corn starch, 10% Borresperse NA are mixed with quartz sand to obtain 10% clothianidin granules.

[0064] Comparative example 6-1. 60% imidacloprid seed treatment suspension concentrate

[0065] According to the requirements of the formula, imidacloprid 60%, SP 27001 15%, magnesium aluminum silicate 0.1%, xanthan gum 0.06%, warning colorant Red 9%, polyvinyl alcohol 5%, and water to 100% according to the formula proportion, put into sand mill for sanding, and the discharge can obtain 60% imidacloprid seed treatment suspension concentrate.

[0066] Comparative example 6-2. 60% imidacloprid seed treatment suspension concentrate

[0067] According to the requirements of the formula, imidacloprid 60%, Borresperse NA 15%, magnesium aluminum silicate 0.1%, xanthan gum 0.06%, warning colorant Red 9%, polyvinyl alcohol 5%, and water to 100% according to the formula proportion, put into sand mill for sanding, and the discharge can obtain 60% imidacloprid seed treatment suspension concentrate.

[0068] Comparative example 6-3. 60% imidacloprid seed treatment suspension concentrate

[0069] According to the requirements of the formula, imidacloprid 60%, Borresperse NA 15%, magnesium aluminum silicate 0.1%, xanthan gum 0.06%, warning colorant Red 9%, corn starch 3%, and water to 100% according to the formula proportion, put into sand mill for sanding, and the discharge can obtain 60% imidacloprid seed treatment suspension concentrate.

[0070] Example 6. 60% imidacloprid seed treatment suspension concentrate

[0071] According to the formula requirements, imidacloprid 60%, Borresperse NA 15%, magnesium aluminum silicate 0.1%, xanthan gum 0.06%, warning colorant Red 9%, corn starch 5%, and water to 100% according to the formula proportion, put into sand mill for sanding, and the discharge can obtain 60% imidacloprid seed treatment suspension concentrate.

[0072] Comparative Example 7. 0.5% Compound A granules

[0073] According to the formula requirements, compound A 0.5%, diatomite 8% are mixed to obtain a mother powder, and then 5% polyvinyl alcohol and quartz sand are mixed to obtain 0.5% compound A granules.

[0074] Example 7. 0.5% Compound A granules

[0075] According to the formula requirements, compound A 0.5%, diatomite 8% are mixed to obtain a mother powder, and then 5% corn starch, 10% Borresperse NA and quartz sand are mixed to obtain 0.5% compound A granules.

[0076] Comparative Example 8-1. 12% Compound A seed treatment suspension concentrate

[0077] According to the formula requirements, compound A 12%, YUS-FS3000 0.8%, magnesium aluminum silicate 1%, xanthan gum 0.2%, warning colorant Red 5%, polyvinyl alcohol 0.4%, and water to 100% according to the formula proportion, put into sand mill for sanding, and the discharge can obtain 12% compound A seed treatment suspension concentrate.

[0078] Comparative Example 8-2. 12% Compound A seed treatment suspension concentrate

[0079] According to the formula requirements, compound A 12%, Ultrazine NA 0.8%, magnesium aluminum silicate 1%, xanthan gum 0.2%, warning colorant Red 5%, polyvinyl alcohol 0.4%, and water to 100% according to the formula proportion, put into sand mill for sanding, and the discharge can obtain 12% compound A seed treatment suspension concentrate.

[0080] Example 8. 12% Compound A seed treatment suspension concentrate

[0081] According to the formula requirements, compound A 12%, Ultrazine NA 0.8%, magnesium aluminum silicate 1%, xanthan gum 0.2%, warning colorant Red 5%, corn starch 0.4%, and water to 100% according to the formula proportion, put into sand mill for sanding, and the discharge can obtain 12% compound A seed treatment suspension concentrate.

[0082] Example 9. 12% Compound A seed treatment microcapsule suspension

[0083] According to the formula requirements, Compound A 12%, Ultrazine NA 0.8%, sodium polyacrylate 2.5%, polyurea prepolymer 8%, styrene maleic anhydride copolymer 1%, S150# 10%, hydrochloric acid 3%, sodium hydroxide 0.01%, xanthan gum 0.01%, warning colorant Red 5%, corn starch 0.4%, and water are added to make up 100% of the formula, and then mixed and stirred uniformly in a sand mill to obtain 12% Compound A seed treatment microcapsule suspension.

[0084] Comparative Example 10-1. 20% Compound A seed treatment suspension

[0085] According to the formula requirements, Compound A 20%, AEO-5 4%, magnesium aluminum silicate 0.8%, xanthan gum 0.1%, warning colorant Red 5%, polyvinyl alcohol 2%, and water are added to make up 100% of the formula, and then put into a sand mill for sanding to obtain 20% Compound A seed treatment suspension.

[0086] Comparative Example 10-2. 20% Compound A seed treatment suspension

[0087] According to the formula requirements, Compound A 20%, Ultrazine NA 4%, magnesium aluminum silicate 0.8%, xanthan gum 0.1%, warning colorant Red 5%, polyvinyl alcohol 2%, and water are added to make up 100% of the formula, and then put into a sand mill for sanding to obtain 20% Compound A seed treatment suspension.

[0088] Example 10. 20% Compound A seed treatment suspension

[0089] According to the formula requirements, Compound A 20%, Ultrazine NA 4%, magnesium aluminum silicate 0.8%, xanthan gum 0.1%, warning colorant Red 5%, corn starch 2%, and water are added to make up 100% of the formula, and then put into a sand mill for sanding to obtain 20% Compound A seed treatment suspension.

[0090] Comparative Example 11-1. 30% Compound A seed treatment suspension

[0091] According to the formula requirements, Compound A 30%, 127FL 4%, magnesium aluminum silicate 0.6%, xanthan gum 0.12%, warning colorant Red 7%, polyvinyl alcohol 2%, and water are added to make up 100% of the formula, and then put into a sand mill for sanding to obtain 30% Compound A seed treatment suspension.

[0092] Comparative Example 11-2. 30% Compound A seed treatment suspension

[0093] According to the formula requirements, Compound A 30%, Ultrazine NA 4%, Magnesium Aluminum Silicate 0.6%, Xanthan Gum 0.12%, warning colorant Red 7%, Polyvinyl Alcohol 2%, water to 100% according to the formula proportion, put into sand mill for sanding, discharge can get 30% Compound A seed treatment suspension.

[0094] Comparative Example 11-3. 30% Compound A seed treatment suspension

[0095] According to the formula requirements, Compound A 30%, Ultrazine NA 12%, Magnesium Aluminum Silicate 0.6%, Xanthan Gum 0.12%, warning colorant Red 7%, Corn Starch 2%, water to 100% according to the formula proportion, put into sand mill for sanding, discharge can get 30% Compound A seed treatment suspension.

[0096] Example 11. 30% Compound A seed treatment suspension

[0097] According to the formula requirements, Compound A 30%, Ultrazine NA 4%, Magnesium Aluminum Silicate 0.6%, Xanthan Gum 0.12%, warning colorant Red 7%, Corn Starch 2%, water to 100% according to the formula proportion, put into sand mill for sanding, discharge can get 30% Compound A seed treatment suspension.

[0098] Example 12. 30% Compound A seed treatment emulsion

[0099] According to the formula requirements, Compound A 30%, 127FL 4%, Ultrazine NA 0.8%, S150# 25%, warning colorant Red 5%, Corn Starch 2.4%, water to 100% according to the formula proportion, using high shear 12000 rpm shear for 15 min, can get 30% Compound A seed treatment emulsion.

[0100] Comparative Example 13-1. 40% Compound A seed treatment suspension

[0101] According to the formula requirements, Compound A 40%, Tween-80 15%, Magnesium Aluminum Silicate 0.2%, Xanthan Gum 0.08%, warning colorant Red 8%, Polyvinyl Alcohol 5%, water to 100% according to the formula proportion, put into sand mill for sanding, discharge can get 40% Compound A seed treatment suspension.

[0102] Comparative Example 13-2. 40% Compound A seed treatment suspension

[0103] Compound A 40%, Borresperse NA 15%, Magnesium Aluminum Silicate 0.2%, Xanthan Gum 0.08%, Warning colorant Red 8%, Polyvinyl Alcohol 5%, water up to 100% as per formulation, put into sand mill for sanding, the discharge can get 40% Compound A seed treatment suspension concentrate.

[0104] Example 13. 40% Compound A seed treatment suspension concentrate

[0105] Compound A 40%, Borresperse NA 15%, Magnesium Aluminum Silicate 0.2%, Xanthan Gum 0.08%, Warning colorant Red 8%, Corn Starch 5%, water up to 100% as per formulation, put into sand mill for sanding, the discharge can get 40% Compound A seed treatment suspension concentrate.

[0106] Comparative Example 14-1. 60% Compound A seed treatment suspension concentrate

[0107] Compound A 60%, SP 27001 15%, Magnesium Aluminum Silicate 0.1%, Xanthan Gum 0.06%, Warning colorant Red 9%, Polyvinyl Alcohol 5%, water up to 100% as per formulation, put into sand mill for sanding, the discharge can get 60% Compound A seed treatment suspension concentrate.

[0108] Comparative Example 14-2. 60% Compound A seed treatment suspension concentrate

[0109] Compound A 60%, Borresperse NA 15%, Magnesium Aluminum Silicate 0.1%, Xanthan Gum 0.06%, Warning colorant Red 9%, Polyvinyl Alcohol 5%, water up to 100% as per formulation, put into sand mill for sanding, the discharge can get 60% Compound A seed treatment suspension concentrate.

[0110] Example 14. 60% Compound A seed treatment suspension concentrate

[0111] Compound A 60%, Borresperse NA 15%, Magnesium Aluminum Silicate 0.1%, Xanthan Gum 0.06%, Warning colorant Red 9%, Corn Starch 5%, water up to 100% as per formulation, put into sand mill for sanding, the discharge can get 60% Compound A seed treatment suspension concentrate.

[0112] Example 15. 60% Compound A seed treatment dry flowable

[0113] According to the formula requirements, compound A 60%, Borresperse NA 15%, rose essence 0.5%, diatomite 2%, corn starch 7.5%, the rest of light calcium carbonate is supplemented to 100%, after air flow crushing, 60% compound A seed treatment dry powder can be obtained.

[0114] Application performance determination:

[0115] The seed treatment agent in the above examples is used to coat corn seeds, and the following performances are determined after coating.

[0116] The method mainly passes through the coated sample falling on the guide groove door through the upper end glass funnel, opens the door, and the seeds freely fall on the sieve at a fixed height, and the powder of the agent separated from the seeds is separated through the sieve. The above process is repeated for 5 times, the content of the agent remaining on the seeds is determined, and compared with the amount of the agent on the seeds without test, the adhesion degree of the agent is calculated. The adhesion test device used is detailed in thiamethoxam seed treatment suspension standard HG / T 5443-2018.

[0117] Take 100g (accurate to 1g) of corn seeds in a petri dish for standby. Use a syringe to suck 0.33g of the sample, inject it into a beaker, and then add 9.67g of deionized water and mix well. Take 1g of the seed treatment agent sample prepared in each of the above examples, inject it into the petri dish, and then cover and shake for 1min. After the coated seeds are spread out, they are placed until the liquid dries. Wait for use.

[0118] Store 330g of seeds treated according to the above in an environment with a temperature of (23±5)℃ and a relative humidity of 40%-60% for at least 24h.

[0119] Take three 20g samples from the prepared seed sample in three conical flasks, add 50mL of methanol, and ultrasonic oscillate until the dye on the seed surface is completely dissolved. Take out, stand for 10min or centrifuge, and determine the mass of the active ingredient.

[0120] Divide the remaining 270g of seeds into 3 equal parts, and test them as follows: 90g of the sample is slowly poured into a glass cylindrical guide groove through the upper end glass funnel. When all the seeds reach the bottom of the guide groove, open the door and let the seeds free fall onto the sieve, and close the door. The experimental device does not need to be cleaned during the falling process. Repeat the above process 4 times. Take out 20g of the sample for testing the amount of the agent on the seeds. Clean the residual powder on the guide groove, sieve and device before the next batch of sample experiment. Repeat the above experiment process for the remaining 2 samples. After the falling test, take out 3 20g samples in 3 conical flasks, add 50mL of methanol, and ultrasonic oscillate until the dye on the seed surface is completely dissolved. Take out, stand for 10min or centrifuge, and determine the mass of the active ingredient.

[0121] The adhesion degree is calculated according to formula (1):

[0122]

[0123] In the formula:

[0124] ω2 is the adhesion degree of the sample, in percentage (%);

[0125] m' is the average value of the mass of the active ingredient in the three samples after the drop test operation, in grams (g);

[0126] m is the average value of the mass of the active ingredient in the three samples without the drop test operation, in grams (g).

[0127] Table 1 is the data for determining the adhesion degree after coating the seeds with the preparation in the examples. From the data in the table, it can be seen that the bold font scheme is the formula system using lignosulfonate compounded with corn starch, and the adhesion degree is obviously improved, and at a suitable ratio, the adhesion degree is obviously improved.

[0128] Table 1 Adhesion degree of coated seeds

[0129]

[0130]

[0131] From the data in the table, it can be seen that in the three schemes of using polyvinyl alcohol alone, lignin plus polyvinyl alcohol, and lignin plus starch, only in the formula using lignosulfonate compounded with corn starch, the adhesion degree value is obviously improved, and at a suitable ratio, the improvement is more obvious. Further determine the performance of the seed coating preparation obtained above:

[0132] Coat the corn seeds with the above examples 6 and 11 respectively, and determine the seed germination safety under the formula according to the preparation amount of 200 milliliters / 100 kilograms of seeds and 600 milliliters / 100 kilograms of seeds respectively. The present application adopts GB / T3543.4-1995 Crop Seeds Test Procedures-Germination Test. The germination refers to the appearance and growth of seedlings to a certain stage in the laboratory, and the main structure of the seedlings indicates whether they can further grow into normal plants under suitable conditions in the field. The germination potential refers to the trend of germination, which is observed on the 4th day according to the relevant standard, and the germination rate is the percentage of the number of normal seedlings grown under the specified conditions and time to the number of seeds for inspection.

[0133] The experiment used sand as the germination bed. The sand was uniform in size, with a diameter of 0.05-0.80 mm, and was non-toxic and sterile. The sand was washed and sterilized at high temperature before use. The sand bed was in the sand-in-bed mode, i.e., the seeds were sown on a layer of flat wet sand, and then 10-20 mm thick loose sand was covered according to the size of the seeds.

[0134] The germination apparatus was a germination box: with light, temperature control range 10-40℃;

[0135] According to the germination conditions specified in the standard, the low temperature was 20℃, and the germination potential and germination rate were determined at this temperature during the day and night.

[0136] The germination potential was the percentage of the total number of seeds that germinated after 4 days of planting;

[0137] The germination rate was the percentage of the total number of seeds that germinated after 7 days of planting.

[0138] Among them, the blank is a blank seed without coating any medicament.

[0139] Table 2 Safety data of Example 6 and Example 10

[0140]

[0141] As can be seen from Table 2, under the technical scheme, the preparations of the examples can germinate normally after coating the seeds according to the high and low drug seed ratio, and are equivalent to or slightly higher than the blank seed germination, which has no effect on the germination rate.

Claims

1. An agricultural formulation containing a diamide compound, characterized in that: The formulation comprises an active ingredient, a surfactant, and functional adjuvants; wherein the active ingredient accounts for 0.2-60% of the formulation mass, and the active ingredient is a diamide compound of the following formula: ; The functional additive is corn starch; The surfactant is lignin sulfonate; The mass ratio of surfactant to functional additive is 2:1-3:

1.

2. The agricultural formulation containing a diamide compound according to claim 1, characterized in that: The mass ratio of the active ingredient to the total mass of the surfactant and functional additives is 10:1 to 1:

1.

3. The agricultural formulation containing a diamide compound according to claim 1, characterized in that: The formulation types include seed treatment suspension, seed treatment emulsion, seed treatment dry powder, seed treatment microcapsule suspension, and granules.

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