CN104782650B - A kind of Semen Tritici aestivi special-purpose suspension seed coat agent - Google Patents

Abstract

The invention relates to a special suspension seed coating agent for wheat, which is composed of the following raw materials in percentage by weight: imidacloprid 5-10%, propiconazole 1-3%, thiram 7-12%, and brassinolide 0.005-0.1% %, film forming agent 1-2.5%, wetting and dispersing agent 1-2.5%, preservative 1-1.5%, filler 5-10%, warning coloring material 1-1.5%, antifreeze agent 1-5%, defoamer 0.5-1%, the balance is water. The seed coating agent is composed of imidacloprid, propiconazole, thiram and brassinolide as active ingredients. The advantages of the four are complementary. The pre-sowing coating treatment can effectively prevent and control wheat take-all, sheath blight, black Ear disease, wheat aphids and underground pests at the seedling stage can reduce the amount, type and frequency of pesticide use in wheat production, reduce pollution, and improve wheat yield and quality. It has good economic and ecological benefits and can be widely used in agricultural promotion.

Description

A special suspension seed coating agent for wheat

technical field

The invention belongs to the technical field of seed coating agents, in particular to a special suspension seed coating agent for wheat.

Background technique

In modern agricultural production, the use of seed coating agents to treat seeds is one of the most economical and convenient methods to prevent and control underground pests and crop soil-borne and seed-borne diseases. A seed coating is a pesticide formulation with film-forming properties used for the treatment of crop or other plant seeds, which solidifies on the surface of the seed to form a film called a seed coat. The seed coating agent absorbs water and swells in the soil without being dissolved, allowing the water and air required for normal germination of the seeds to pass through, and the contained pesticides and seed fertilizers are slowly released, which can kill underground pests and seedling pests, and has the function of preventing and controlling seedlings. It has the effects of preventing early-stage diseases and systemic diseases, improving seed germination rate, and promoting healthy growth of seedlings. Suspension seed coating agent is a kind of seed coating agent, which is a kind of flowable product made by wet pulverization of pesticide, film forming agent, wetting agent, dispersant, thickener, colorant, filler and water. The stable and homogeneous suspension is favored in many kinds of seed coating agents because of its convenience and safety.

With the improvement of farmers' scientific farming awareness and the strengthening of planting technology, wheat seed coating before sowing has attracted great attention from farmers. Using excellent seed coating agents to solve wheat pests and diseases from the source has become an important technology for farmers to increase production and income. Seed coating is an important part of improving scientific and technological content and realizing seed quality standardization. It can not only effectively prevent and control diseases and insect pests, but also improve seedling stress resistance and crop yield, and can greatly reduce environmental pollution. According to statistics, the annual sales of seed treatment agents in the domestic market are growing at a rate of more than 20%. Throughout the world's agriculture, the application of seed coating agents has spread all over agricultural developed countries and regions, occupying an important position in agricultural production. With the increase in grain prices in recent years, farmers have been motivated to grow grain, and the use of seed coating agents is an indispensable part of scientific farming, increasing production and harvest, and will be a trend in the future. With the country's emphasis on agriculture, the increase in investment in agricultural science and technology, and the advocacy of farmers' scientific farming, more and more farmers will realize the importance of wheat seed coating agents. Therefore, the market prospect of wheat seed coating agent is very broad.

Although there are many kinds of wheat seed coating agents currently used in the market, their formulas are single, lack of specialization and pertinence, and cannot solve the comprehensive control problems of aphids, take-all and other diseases and insect pests that are more serious in the current wheat production practice. At the same time, due to the large differences in crop varieties, ecological environment conditions and climates, cultivation conditions, types of pests and diseases, and soil types, it is difficult to achieve ideal control effects in different regions and different crops with a single formula of seed coating agent. Carbofuran, carbendazim, triadimefon, etc. produced by a few manufacturers have poor control effects on wheat underground pests and take-all. The use of imidacloprid in wheat seed coatings has been recognized and widely promoted, but some seed coating formulations and auxiliaries are unreasonable or the preparation technology is not perfect, the coating effect is poor, and phytotoxicity is prone to occur. Drought will lead to slow emergence or even lack of seedlings and broken ridges. In addition, there is insufficient research on the mechanism of seed coating, the effective concentration, effective time limit, and interaction of different components of seed coating agents, and the different effects and mechanisms of action on seed germination and growth after sowing are lacking. The lack of theoretical research and experimental basis for development, random mixing or simple compounding, poor control effect, and even undue losses, these technical problems need to be solved urgently.

Contents of the invention

The purpose of the present invention is to provide a special suspension seed coating agent for wheat, which can effectively prevent and control various diseases such as take-all, sheath blight, smut and other diseases, aphids and seedling stage serious occurrences in current wheat actual production. underground pests, and ensure that the active ingredients of the suspension seed coating agent have no antagonistic effect, are safe and efficient.

To achieve the above object, the present invention adopts the following technical solutions:

A special suspension seed coating agent for wheat, which is composed of the following raw materials in percentage by weight: 5-10% imidacloprid, 1-3% propiconazole, 7-12% thiram, 0.005-0.1% brassinolide, Film agent 1-2.5%, wetting and dispersing agent 1-2.5%, preservative 1-1.5%, filler 5-10%, warning coloring material 1-1.5%, antifreeze agent 1-5%, defoamer 0.5 -1%, the balance is water.

Further, the above-mentioned suspension seed coating agent for wheat is preferably composed of the following raw materials in weight percentage: 8% imidacloprid, 1.5% propiconazole, 10.5% thiram, 0.01% brassinolide, 2% film-forming agent, Wetting and dispersing agent 1.5%, preservative 1.5%, filler 8%, warning colorant 1.5%, antifreeze 2%, defoamer 1%, and the balance is water.

Specifically, the film-forming agent is one or more of gum arabic, pectin, xanthan gum, methyl cellulose, ethyl cellulose, sodium carboxymethyl cellulose, hydroxypropyl cellulose and polyvinyl alcohol Two or more.

The wetting and dispersing agent is one or more of aryl sulfonate, fatty acid polyethylene glycol, dodecylbenzene sulfonate, lignin and fatty acid ethane adduct phosphate.

The preservative is one or more of benzoic acid, benzaldehyde, sodium benzoate, sorbic acid and sodium salicylate.

The warning pigment is basic rhodamine or basic scarlet.

The antifreezing agent is one or more of ethylene glycol, hexanediol and urea.

The defoamer is a silicone defoamer.

Imidacloprid is a nitromethylene systemic insecticide, it is the action body of the nicotinic acid acetylcholinesterase receptor, it interferes with the motor nervous system of pests and causes chemical signal transmission failure, no cross-resistance problem, broad-spectrum, high efficiency, low Toxic, low residue, pests are not easy to develop resistance, safe for humans, livestock, plants and natural enemies, and has multiple effects such as contact killing, stomach poisoning and systemic absorption. Seed treatment to control wheat aphids, long-lasting and significant control effect . Propiconazole is a new type of systemic triazole broad-spectrum fungicide with dual functions of treatment and protection. It can be absorbed by roots, stems and leaves, and can quickly conduct upwards in plants to prevent and control Diseases caused by Ascomycetes, Basidiomycetes and Deuteromycetes, especially for wheat take-all, powdery mildew, rust, root rot, rice bakanae disease, sheath blight, banana leaf spot and other diseases, can effectively It can effectively control the diseases caused by most higher fungi. Thiram is a protective fungicide, which can effectively prevent and control wheat smut, and can promote germination and increase the emergence rate. Brassinolide is a substance that promotes plant growth. Its main function is to promote cell division, improve seed vigor, have strong rooting, promote growth, reduce diseases, relieve phytotoxicity, coordinate nutritional balance, resist drought and cold, and enhance crop resistance. It is widely used in agricultural production, mostly for foliar spraying or seed soaking. A certain amount of brassinolide is added to the seed coating agent, and through seed coating, it can alleviate the phytotoxicity at the seedling stage, resist chilling damage, and increase the rate of seedling preservation. There are no relevant research reports on seed coatings.

In order to promote the wetting and dispersing of active component particles and prevent them from agglomerating each other, the suspension seed coating agent of the present invention also includes a wetting and dispersing agent, and the wetting and dispersing agent is preferably aryl sulfonate, fatty acid polyethylene glycol, One or more of dodecylbenzenesulfonate, lignin and fatty acid ethane adduct phosphate. In order to ensure that the limited pesticide components are concentrated on the seeds and roots, not easy to fall off and scatter, and reduce the diffusion of pesticides in the environment and contact with non-targets, the suspended seed coating agent also needs to include a film-forming agent. The film-forming agent should not only ensure that the film has good air permeability and water permeability, and the seeds will germinate and grow normally, but also ensure that the film is insoluble in water, and the active ingredients in the film can be released slowly and have a long lasting effect. The film-forming agent of the present invention is preferably one or more of gum arabic, pectin, xanthan gum, methylcellulose, ethylcellulose, sodium carboxymethylcellulose, hydroxypropylcellulose and polyvinyl alcohol Two or more. The coloring agent is also called a color warning agent, which can improve the safety of the suspended seed coating agent, wherein the coloring agent is preferably one or both of rhodamine and basic scarlet. In order to improve the stability of the seed coating agent in low-temperature storage, antifreezing agents are added to the suspension seed coating agent of the present invention. The antifreezing agent is preferably one or more of benzoic acid, benzaldehyde, sodium benzoate, sorbic acid and sodium salicylate.

The suspension seed coating agent of the present invention can be prepared by conventional methods in the field, such as: take each raw material in proportion, heat water to 50-80°C, stir and add film-forming agent and warning colorant, and obtain film-forming solvent after completely dissolving ; Add imidacloprid, propiconazole, thiram in this film-forming solvent again, after brassinolide, wetting and dispersing agent, preservative, filler, antifreeze and defoamer, send into sand mill or shear The cutting machine grinds and shears until the particle fineness of the suspension reaches 2-3 μm, and the product is obtained. In the actual medication process, the present invention can determine the appropriate amount of the suspended seed coating agent according to the occurrence of local control objects, and usually can be used according to the weight ratio of the seed coating agent to the seeds at 1:50-60. The suspended seed coating agent prepared by the present invention is a red flowable suspension, low temperature, heat storage stability is qualified, heat storage decomposition rate is less than 5%, suspension rate is greater than 90%, wet sieve test 98% passes through a 45 μm standard sieve, The particle size is 2-3μm.

Due to the differences in composition, structure, and physical and chemical properties of the active components of different seed coating agents after mixing, the joint effect between the active components is usually expressed as synergistic effect, additive effect or antagonistic effect. The so-called synergistic effect is the mutual cooperation between different substances, and the effect produced is greater than the sum of the effects of each component; the additive effect is that the effect produced is equal to the sum of the effects of each component; antagonism refers to the effect of two substances. In biological organisms, one substance interferes with the effect of another substance, or interferes with each other's effects, reducing the overall effect. According to the Sun Yunpei (Sim Y-P) method, the present invention calculates the co-toxicity coefficient and evaluates the mixed effect of imidacloprid, propiconazole and thiram and the plant growth regulator brassinolide. The results show that the co-toxicity coefficients are all greater than 100, indicating that each group The mixed use between the parts has obvious synergistic effect. In addition, the present invention has carried out the disease control test on the suspension seed coating agent and each active ingredient in each suspension seed coating agent respectively, and the dosage of each active ingredient in the suspension seed coating agent is less than the single dosage. The results show that: the present invention The control effect of the suspended seed coating agent is higher than that of a single agent, indicating that each active ingredient in the suspended seed coating agent of the present invention has no cross resistance, and the control effect has a synergistic effect. It can be seen from the above technical scheme that the suspension seed coating agent of the present invention is compounded with imidacloprid, propiconazole, thiram and brassinolide as active ingredients, and the advantages of the four are complementary, which can expand the disease prevention spectrum of the medicament and simultaneously improve the The efficacy of the drug improves the safety factor, and a single application can prevent and control a variety of diseases and insect pests, reducing the amount, type and frequency of use of pesticides, and can be widely used in the agricultural field.

The seed coating agent of the present invention is suitable for coating wheat seeds, either manually or mechanically, and can be used directly according to the weight ratio of the seed coating agent to seeds being 1:50-60. The seed coating agent of the invention can effectively prevent and control wheat sheath blight, take-all, aphids and underground pests, and can increase emergence rate, promote roots and seedlings, regulate wheat growth and development, enhance wheat stress resistance, and increase yield.

Compared with prior art, the beneficial effect of the present invention:

The suspension seed coating agent of the present invention uses imidacloprid, propiconazole, thiram and brassinolide compound as active ingredients, and the advantages of the four are complementary, and the coating treatment before sowing can effectively prevent and control wheat take-all and sheath blight , smut, wheat aphids and underground pests at the seedling stage, reduce the amount, type and frequency of pesticide use in wheat production, reduce pollution, and improve wheat yield and quality. It has good economic and ecological benefits and can be widely used in agriculture promote.

detailed description

In order to further understand the present invention, a suspension seed coating agent provided by the present invention will be described in detail below in conjunction with the examples.

Example 1

A special suspension seed coating agent for wheat, which is composed of the following raw materials in percentage by weight: 8% imidacloprid, 1.5% propiconazole, 10.5% thiram, 0.01% brassinolide, 2% film-forming agent, wetting and dispersing 1.5% preservative, 1.5% preservative, 8% filler, 1.5% warning colorant, 2% antifreeze, 1% defoamer, and the balance is water; the film-forming agent is sodium carboxymethyl cellulose, and the The wetting and dispersing agent is dodecylbenzene sulfonate, the preservative is sodium benzoate, the warning colorant is basic scarlet, the antifreeze is ethylene glycol, and the defoamer is silicone defoamer. foaming agent.

Example 2

A special suspension seed coating agent for wheat, which is composed of the following raw materials in percentage by weight: 10% imidacloprid, 1% propiconazole, 8% thiram, 0.03% brassinolide, 1% film-forming agent, wetting and dispersing 1% preservative, 1.5% preservative, 6% filler, 1.5% warning colorant, 3% antifreeze, 0.6% defoamer, and the balance is water; the film-forming agent is hydroxypropyl cellulose, and the moisturizer The wet dispersant is aryl sulfonate, the preservative is sorbic acid, the warning colorant is basic scarlet, the antifreeze is urea, and the defoamer is an organosilicon defoamer.

Example 3

A special suspension seed coating agent for wheat, which is composed of the following raw materials in weight percentage: 6% imidacloprid, 2.5% propiconazole, 12% thiram, 0.08% brassinolide, 2.5% film-forming agent, wetting and dispersing 2.5% preservative, 1.5% preservative, 10% filler, 1.5% warning colorant, 4% antifreeze, 1% defoamer, and the balance is water; the film-forming agent is polyvinyl alcohol, and the wetting and dispersing The preservative is lignin, the preservative is sorbic acid, the warning colorant is basic scarlet, the antifreeze is urea, and the defoamer is a silicone defoamer.

The suspension seed coating agent described in each of the above embodiments is prepared by the following conventional method: take each raw material in proportion, heat the water to 65° C., stir and add the film-forming agent and warning colorant, and obtain the film-forming solvent after completely dissolving; After adding imidacloprid, propiconazole, thiram, brassinolide, wetting and dispersing agent, preservative, filler, antifreeze and defoamer into the film-forming solvent, send it into the sand mill for grinding and mixing until suspended The particle fineness of the liquid reaches 2-3 μm, and the product is obtained.

The invention discloses a suspension seed coating agent. Those skilled in the art can refer to the content of this article to appropriately improve the process parameters to achieve. It should be pointed out that all similar substitutions and modifications are obvious to those skilled in the art, and they are all considered to be included in the present invention. The product of the present invention has been described through preferred embodiments, and relevant personnel can make changes or appropriate changes and combinations to the product described herein without departing from the content, spirit and scope of the present invention to realize and apply the technology of the present invention .

Carry out relevant wheat effect test with the special suspension seed coating agent for wheat described in Example 1 below.

Effect example Pest control effect test

1. Materials and methods

1.1 Test drug

Test agent: special suspension seed coating agent for wheat of the present invention

Comparative drug:

(1) 600 g/L Imidacloprid Suspended Seed Coating Agent Bayer (China) Crop Science Co., Ltd.

(2) 250 g/L propiconazole EC Swiss Syngenta Crop Protection Co., Ltd.

(3) 14% A·E·Thiram double-suspension seed coating agent Henan Kaifeng Seed Coating Agent Factory

Variety: Wheat, Zhengmai 7698

Control objects: wheat aphids, seedling underground pests, wheat sheath blight, take-all

1.2 Test location

Experimental Site of Henan Academy of Agricultural Sciences

1.3 Cultivation conditions

The terrain of the test site is flat, the soil type is mixed soil, the soil fertility is uniform, the soil pH value is about 7, and the previous crop is corn. Before sowing, 50 kg of special compound fertilizer for wheat should be applied per mu; on October 10, the seedlings should be drilled with precision seeders, and the basic seedlings should be 150,000 per mu. The cultivation and management conditions of each plot are the same, the field management method is the same as that of production, and no other measures have been taken to prevent and control underground pests.

1.4 Test treatment

There are 6 treatments in this experiment:

1. The special suspension seed coating agent for wheat of the present invention is coated with a drug-to-species ratio of 1:50;

2. The special suspension seed coating agent for wheat of the present invention is coated with a drug-to-species ratio of 1:60;

3. 600 g/L imidacloprid suspension seed coating agent, coating with a drug-to-species ratio of 1:200;

4. 250 g/L propiconazole emulsifiable concentrate, diluted according to the recommended dose for seed dressing;

5. 14% A·E·Thiram double-suspension seed coating agent, coating with a drug-to-species ratio of 1:50;

6. Blank control (ck), without any medicine.

1.5 Experimental design

This experiment adopts randomized block design with 4 repetitions, and the plot area is 30m ² (10m×3m).

1.5 Test method

1.5.1 Seed dressing method

Each treatment is weighed according to the proportion of the drug species and put into a plastic bag, hold the mouth of the bag tightly so that the bag is filled with air, shake it fully until the seeds are evenly coated, and then dry and then dress the seeds.

1.5.2 Seeding method

The experiment was sown on October 10, drilled with a precision seeder, and the sowing rate was 150,000 basic seedlings/mu.

1.6 Survey method

1.6.1 Germination potential and germination rate survey

100 seeds were selected for each treatment, and germination tests were carried out indoors to investigate the germination potential and germination rate.

1.6.2 Investigation of Phytotoxicity

After emergence to the end of the growth period, pay attention to observe the growth of wheat and whether there is phytotoxicity at any time.

1.6.3 Investigation of underground pests at seedling stage

In the 3-leaf stage of wheat, the investigation of underground pests was carried out. Randomly investigate three 1-meter double-row samples in each plot. All wheat seedlings bitten or killed by underground pests such as mole crickets, grubs, needleworms or cutworms are insect-injured seedlings. Record the number of insect-injured seedlings and calculate insect damage Seedling rate and control effect.

1.6.4 Investigation of sheath blight

In mid-February, three 1-meter double-row samples were randomly selected from each plot to investigate the incidence of sheath blight, the number of diseased plants and the total number of plants were recorded, and the incidence rate and control effect were calculated.

1.6.5 Take-all disease survey

Using the diagonal 5-point sampling method to investigate the occurrence of wheat take-all at the turning green stage and booting stage respectively. In May of the next year, investigate the symptoms of wheat roots and ears at intervals of 15 days, observe the development of the disease at any time during the mature stage, and record the disease in time.

1.6.6 Aphid survey

Sampling was done at 5 points along the diagonal of the plot, 20 plants at each point, and the number of live aphids on the whole plant was investigated at fixed points. Since the occurrence of wheat aphids in wheat fields was very small from sowing to late March of the following year, the survey was started on March 27, once every 15 days, and a total of 4 surveys were conducted to calculate the number of aphids in 100 plants and the control effect.

Control effect = (the number of aphids in the blank control area - the number of aphids in the treatment area) / the number of aphids in the blank control area × 100%

1.6.7 Yield determination

Harvest the whole area with a plot harvester, weigh each plot after drying, and calculate the yield and yield increase rate.

2. Test results

2.1 Results of indoor germination test (Table 1)

Each treatment of the suspension seed coating agent for wheat of the present invention has no adverse effect on the germination potential and germination rate of wheat (Table 1), and can increase the emergence rate and promote the uniformity and robustness of seedlings.

2.2 Phytotoxicity

It is observed that during the whole growth period of wheat growth, the suspended seed coating agent for wheat of the present invention has no adverse effect on wheat seedling emergence and growth, and no phytotoxicity occurs.

2.3 Control effect on wheat underground pests (Table 2)

As can be seen from Table 2, in the test, the suspended seed coating agent for wheat of the present invention is 1:50, 1:60 for coating seed dressing with the drug type ratio, and the average control effects of the two treatments on subterranean pests are 85.21%, 74.09%, respectively. %, the dosage increases, and the control effect increases accordingly. At the dose of 1:50, its control effect is slightly higher than that of 600g/L imidacloprid suspension seed coating against subterranean pests (80.77%); at the dose of 1:60, its control effect is slightly higher than that of 14% A·V ·The control effect of thiram double-suspended seed coating on underground pests (71.24%). It can be seen that, within the range of 1:50-60, the suspension seed coating agent for wheat of the present invention has a good control effect on underground pests.

2.5 Control effect on wheat sheath blight (Table 3)

The results show that the suspension seed coating agent for wheat of the present invention is 1:50, 1:60 under the situation of drug species ratio, each treatment is respectively 89.72%, 84.71% to the average control effect of sheath blight, with the increase of dosage increase, the control effect is correspondingly improved. At a dose of 1:50, its control effect is slightly higher than that of 250 g/L propiconazole EC against sheath blight (86.42%); at a dose of 1:60, its control effect is higher than that of 14% A·V ·Thiram double-suspension seed coating (83.26%). It can be seen that the suspension seed coating agent for wheat of the present invention has a good control effect on sheath blight with a drug-to-species ratio of 1:50-60.

2.7 Control effect on take-all disease (Table 4)

The survey results showed that a small number of secondary rooting diseased plants appeared in the blank control area and treatment area 3 on May 13, and diseased plants appeared in treatment 2, treatment 4, and treatment 5 on May 17; diseased plants appeared in treatment 1 on May 18; On the 23rd, secondary roots and black roots appeared in different degrees in each treatment area, and the treatment 3 and blank control areas were more severe. From the results of the investigation: each treatment has a certain control effect on take-all, and wherein, treatment 1 (wheat suspension seed coating agent 1:50 coating of the present invention) has the best control effect, and the average control effect reaches 63.96%, followed by For treatment 4 (250 g/L propiconazole emulsifiable concentrate), the control effect is 63.47%, treatment 2 (coating of wheat suspension seed coating agent 1:60 of the present invention) and treatment 5 (14% formazan thiram double suspension Seed coating agent) on the average control effect of take-all were 57.38% and 61.28%. It can be seen that the suspension seed coating agent for wheat of the present invention has outstanding control effect on take-all, and the control effect increases correspondingly with the increase of coating dosage.

2.8 Control effect on aphids (Table 5)

Known from test result, process 1 (wheat suspension seed coating agent 1:50 coating of the present invention), process 2 (wheat suspension seed coating agent 1:60 coating of the present invention), process 3 (600g/liter imidacloprid suspension Seed coating agent) showed a long-lasting effect of up to 7 months in the control of wheat aphids, and showed high control effects in the early, middle and late stages. During the entire occurrence period of wheat aphids, or in other words, during the entire development period of wheat, imidacloprid-coated seed dressing can basically control the occurrence and damage of aphids, and has persistence and high efficiency. The suspension seed coating agent for wheat of the present invention is applied in the manner of 1:50-60 of medicine seeds before sowing, which can reduce pollution, protect natural enemies, and has good economic and ecological benefits.

2.7 Effects on Wheat Yield

The test result of table 6 shows, each medicament treatment all has the effect of increasing production and income to wheat output, with the suspension seed coating agent 1:50 coating process of wheat of the present invention increases production effect most significantly, up to 18.26%, followed by the present invention's The wheat was treated with the suspension seed coating agent 1:60, which was 15.20%.

3 Conclusion

3.1 The suspension seed coating agent for wheat of the present invention has no adverse effects on the germination, emergence and growth of wheat.

3.2 When the suspension seed coating agent for wheat of the present invention is 1:50 and 1:60, the average control effects on underground pests are 85.21% and 74.09%, respectively, and the average control effects on sheath blight are respectively 89.72%, 84.71%, the average control effect on wheat take-all is 63.96%, 57.38%, and can effectively control aphids throughout the growth period of wheat. At the same time, it can promote roots and seedlings, promote tillering, regulate growth and development, enhance wheat stress resistance, and improve yield and quality.

In view of the comprehensive occurrence of wheat diseases and insect pests in my country in recent years, it is necessary to use environmentally friendly and efficient new insecticides and fungicides in combination to achieve better effects of disease prevention and pest control. The plant growth regulator is compounded, and the incidence of various diseases and insect pests such as aphids, sheath blight, and take-all can be reduced by coating before sowing, and the number of spraying in the field can be reduced. In the current rural economic development, women and the elderly are the mainstays in rural areas. Under the situation of the labor force, the product has broad prospects for promotion and application.

Claims (2)

1. a kind of Semen Tritici aestivi special-purpose suspension seed coat agent is it is characterised in that comprise the following raw materials by weight percent：Imidacloprid 8%, Propiconazole 1.5%, thiram 10.5%, brassin lactones 0.01%, film former 2%, wetting dispersing agent 1.5%, preservative 1.5%, fill out Fill agent 8%, warning colorant 1.5%, antifreezing agent 2%, defoamer 1%, balance of water；

Described film former is one of pectin, hydroxypropyl cellulose or two kinds；

Described wetting dispersing agent is arylsulphonate, fatty acid polyglycol ethylene glycol, dodecyl benzene sulfonate, lignin and fatty acid One of ethane additive product phosphate or two or more；

Described preservative is benzoic acid, benzaldehyde, sodium benzoate, in sorbic acid and sodium salicylate one or more；

Described antifreezing agent is one of hexanediol and carbamide or two kinds；

Described defoamer is silicone defoamer.

2. Semen Tritici aestivi special-purpose suspension seed coat agent as claimed in claim 1 is it is characterised in that described warning colorant is basic rhodamine Or alkalescence is bright red.