Composite pelleting coating agent and processing method

Abstract

The invention relates to the technical field of rice seed treatment, in particular to a composite pelleting coating agent and a processing method. According to the specific technical scheme, the composite pelleting coating agent comprises an insecticidal and bactericidal agent, a growth promoter, a filler and an adhesive, the insecticidal and bactericidal agent is one or more of chlorantraniliprole, cyantraniliprole, clothianidin, triflumezopyrim and thifluzamide, and the growth promoter is one or more of chlorantraniliprole, cyantraniliprole, clothianidin, triflumezopyrim and thifluzamide. The growth promoter is one or more of gibberellin, amino-oligosaccharin, chlorine iron, brassinolide and diethyl aminoethyl hexanoate. The chlorantraniliprole, the trifluorobenzene pyrimidine and the thifluzamide are added into the coating agent disclosed by the invention to serve as insecticidal fungicides, so that the occurrence of rice leaf folders, rice planthoppers and banded sclerotial blight in the early and middle stages of rice can be effectively controlled, the use frequency of pesticides is reduced, meanwhile, the pelleting has a slow release function, and the utilization rate of the pesticides can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of rice seed treatment, and in particular to a composite pelletizing coating agent and a processing method thereof. Background Art

[0002] Seed pelleting coating technology is an agricultural high-tech technology developed on the basis of seed coating technology to meet the needs of precision sowing. With the improvement of agricultural mechanization, the requirements for precision sowing are getting higher and higher. Traditional seed treatment methods can no longer meet the needs of modern agriculture, so scientists began to explore new seed treatment technologies. Seed pelleting coating technology came into being under such a background. This technology was originally developed on the basis of seed coating technology. Seed coating technology is to achieve the purpose of preventing and controlling pests and diseases, promoting seed germination and plant growth by coating one or more layers of agents on the surface of seeds. However, traditional seed coating technology often has problems such as uneven coating and loss of agents, which affects the treatment effect and sowing quality of seeds. In order to solve these problems, scientists have improved and innovated seed coating technology and gradually developed seed pelleting coating technology.

[0003] Since the 1960s, seed pelleting coating technology has been widely used in developed countries such as Europe and the United States. Through continuous research and practice, these countries have gradually improved the process and equipment of seed pelleting coating technology and formed a relatively mature technical system. With the continuous promotion and popularization of technology, seed pelleting coating technology has gradually become an indispensable part of modern agriculture.

[0004] The basic principle of seed pelleting coating technology is to coat the surface of seeds with one or more layers of a "coat" containing pesticides, fungicides, compound fertilizers, trace elements, plant growth regulators, slow-release agents and film-forming agents through a special pelleting machine. This coat is called a seed coating agent, which not only changes the shape and size of the seeds, but also improves the disease resistance, stress resistance and germination rate of the seeds.

[0005] Seed pelleting coating technology has the following significant features:

[0006] 1. Regular shape and uniform size: The pelletized seeds have regular shape and uniform size, which is convenient for mechanized precision sowing. This can not only improve the accuracy and stability of sowing, but also reduce seed waste and reduce sowing costs.

[0007] 2. Comprehensive nutrition, slow release and long-lasting: Seed coating contains a variety of nutrients and plant growth regulators, which can be slowly released into the soil for plants to absorb and utilize. This can not only provide comprehensive nutritional support for plants, but also improve the utilization rate of fertilizers and reduce the use of chemical fertilizers.

[0008] 3. Prevent diseases and pests, and promote growth: Insecticides and fungicides in seed dressings can effectively prevent and control diseases and pests in seeds and seedlings, reduce the use of pesticides and reduce pesticide residues. At the same time, growth regulators in seed dressings can promote plant growth and development, and improve crop yield and quality.

[0009] 4. Enhance resistance and improve adaptability: Pelleted seeds have stronger disease resistance, stress resistance and adaptability. They can better adapt to different environmental and climatic conditions and improve crop survival rate and yield.

[0010] 5. Reduce costs and improve benefits: Seed pelleting coating technology can reduce the amount of seeds used, reduce the number of chemical control and improve the yield and quality of crops. These can bring significant economic and social benefits to farmers.

[0011] A large number of experimental studies and production practices have proved that by pelleting seeds of vegetables, forage, lawns, tobacco and flowers, more than 30% of seeds can be saved, chemical control during the growth period of crops can be reduced by more than 2 to 3 times, and crop yields can be increased by more than 10% to 20%. This has a great effect of increasing income and saving costs for farmers. After sowing, the pelleted seeds can quickly absorb water and nutrients, promote seed germination and plant growth. By wrapping the multi-micro fertilizer, pesticides and fungicides on the surface of the seeds, the disease resistance and stress resistance of the seeds can be improved, and the occurrence of diseases and pests can be reduced. The pelleted seeds have regular shapes and uniform sizes, which are convenient for mechanized precision sowing, and improve the efficiency and accuracy of sowing.

[0012] Direct seeding of rice is a labor-saving, water-saving, efficient and fully mechanized rice cultivation technology. It is one of the technologies to cope with the transformation of rice production in my country. However, sowing is greatly affected by climatic conditions and field flatness. For example, low temperature, heavy rain and waterlogging will lead to uneven emergence of seedlings. Problems such as missed sowing and re-seeding often occur during mechanical direct seeding due to irregular seeds. Due to the poor permeability of direct seeded rice fields, it is susceptible to a variety of diseases and insect pests. The purpose of long-term prevention and control of rice pests is achieved through seed mixing, but the current dosage of seed dressing agents is high, and the early agents are lost more with watering, resulting in serious waste of agents. Although the technology of achieving slow release by adding film-forming agents is becoming more and more perfect, the slow release effect is not obvious, the release of agents cannot be controlled, and the reduction of pesticides is not prominent. There is also the problem of blocked respiration of seeds during germination, which affects the safety of emergence. Summary of the invention

[0013] In view of the deficiencies of the prior art, the present invention provides a composite pelletizing coating agent and a processing method.

[0014] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0015] The invention discloses a composite pelletized coating agent, comprising an insecticide and fungicide, a growth promoter, a filler and an adhesive, wherein the insecticide and fungicide is one or more of chlorantraniliprole, cyantraniliprole, clothianidin, trifluanid and thiophanate-methyl, and the growth promoter is one or more of gibberellins, amino oligosaccharides, chlorin iron, brassinolide and ampicillin.

[0016] Preferably, the filler is a mixture of clay, bentonite and talc, and the binder is one of sodium carboxymethyl cellulose, methyl cellulose, gum arabic and polyvinyl alcohol.

[0017] Preferably, the insecticides and fungicides are chlorantraniliprole, trifluanid and thiophanate-methyl, and the weight ratio of the insecticides and fungicides to the seed weight is 1-1.5:0.5-1:6-9:1000.

[0018] Preferably, the growth promoter is gibberellin, brassinolide and amino-oligosaccharide, the volume ratio of the gibberellin, brassinolide and amino-oligosaccharide is 1:1:1-1:3:4, and the addition amount of the growth promoter is 5-20 mL / kg seed.

[0019] Preferably, the concentrations of the gibberellins and brassinolide are 0.01 mg / L respectively, the concentration of the amino oligosaccharides is 0.1 g / mL, and the solvents used in the preparation process are all ethyl acetate.

[0020] Preferably, the mass ratio of the clay, bentonite and talc is 1:0.5:0.5 to 1:2:1.

[0021] Preferably, the binder is a 1% to 1.5% sodium carboxymethyl cellulose aqueous solution.

[0022] Correspondingly, a processing method of a composite pelletizing coating agent is as follows: after screening the seeds, an adhesive and a mixed filler are alternately added at a rotation speed of 35 rpm, and then insecticides, fungicides and growth regulators are added. After the addition is completed, the coating is performed for 1 minute. After the coating is completed, the seeds are dried and set aside.

[0023] Preferably, after coating is completed, the rotation speed is adjusted to 15 rpm, a colorant is added, the mass ratio of the colorant to the seeds is 1:10-20, and coloring is performed for 2 minutes.

[0024] Preferably, the mass ratio of the filler to the seeds is 1:1; the drying temperature is 35° C., and the drying time is 1 hour.

[0025] The present invention has the following beneficial effects:

[0026] 1. The germination rate of rice seeds after pelleting in the present invention is improved, bird damage during direct seeding is reduced, and the amount of direct seeded rice seeds used can be reduced by about 30%.

[0027] 2. The volume of the rice seeds in the present invention increases after being pelletized, and the use of an inert adhesive increases the strength of the rice seeds, making them more suitable for mechanical sowing or aircraft sowing.

[0028] 3. The rice pelletized seeds of the present invention can form a mesh structure after expansion, maintain a breathable state, and ensure the seed germination rate.

[0029] 4. In the process of pelleting rice seeds in the present invention, chlorantraniliprole, trifluanid and thiophanate-methyl are added as insecticides and fungicides, which can effectively control the occurrence of rice leaf rollers, rice planthoppers and sheath blight in the early and middle stages of rice, reduce the number of times pesticides are used, and pelleting has a slow-release function, which can improve the utilization rate of the pesticide. DETAILED DESCRIPTION

[0030] The following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0032] The present invention discloses a composite pellet coating agent, comprising an insecticide and fungicide, a growth promoter, a filler and an adhesive, wherein the insecticide and fungicide is one or more of chlorantraniliprole, cyantraniliprole, clothianidin, trifluanid and thiophanate-methyl, and the growth promoter is one or more of gibberellins, amino oligosaccharides, chlorin iron, brassinolide and diethylaminoethyl.

[0033] Furthermore, the insecticide and fungicide are chlorantraniliprole, trifluanid and thiophanate-methyl, and the weight ratio of the insecticide and fungicide to the seed weight is 1-1.5:0.5-1:6-9:1000. The growth promoter is gibberellin, brassinolide and amino-oligosaccharide, and the volume ratio of the gibberellin, brassinolide and amino-oligosaccharide is 1:1:1-1:3:4, and the addition amount of the growth promoter is 5-20 mL / kg seed.

[0034] Furthermore, the filler is a mixture of clay, bentonite and talc, and the mass ratio of the clay, bentonite and talc is 1:0.5:0.5 to 1:2:1. The binder is one of sodium carboxymethyl cellulose, methyl cellulose, gum arabic and polyvinyl alcohol. Preferably, the binder is a 1% to 1.5% sodium carboxymethyl cellulose aqueous solution.

[0035] Furthermore, the concentrations of the gibberellins and brassinolide are 0.01 mg / L respectively, the concentration of the amino oligosaccharides is 0.1 g / mL, and the solvents used in the preparation process are all ethyl acetate.

[0036] The present invention discloses a processing method of a composite pelletized coating agent, and the steps are as follows:

[0037] (1) Selecting rice seeds to remove chaff, branches and non-seed components;

[0038] (2) The filler is fully crushed by a high-speed grinder to 800 mesh and sieved;

[0039] (3) preparing a binder, and preparing a 1% to 1.5% aqueous solution by fully dissolving sodium carboxymethyl cellulose;

[0040] (4) Add a certain amount of rice seeds into the pelletizing coating silo, turn on the machine, adjust the speed of the coating silo to 35 rpm, add the aqueous solution of the adhesive to make the surface of the rice seeds wet, and close the water inlet switch; after the filler is fully mixed, add it to the material bin, and the weight ratio of the filler to the seeds is 1:1. Turn on the material bin switch and let the filler mixture slowly fall into the silo. When the surface of the seeds is evenly coated with a layer of pelletized powder, turn on the switch of the adhesive aqueous solution to alternate the water and powder;

[0041] (5) After weighing the insecticide, fungicide and growth regulator, dilute and dissolve them with water. When performing step (4), use a straw to suck the solution into the silo so that the agent is evenly attached to the pelletized seeds until the pelletization and coating is completed;

[0042] (6) When step (4) and step (5) are completed, turn off the water inlet switch and the material bin switch, allow the machine to pelletize and coat for 1 minute, adjust the silo speed to 15 rpm, slowly add colorant from the silo entrance, the weight ratio of colorant to seed weight is 1:10-20, rotate and color for 2 minutes, open the silo door, and collect the seeds;

[0043] (7) Place the pelletized and coated seeds in a drying device, adjust the drying temperature to 35°C, and dry them with air for 1 hour. After drying, pass the pelletized and coated seeds through an 8-mesh sieve to remove seeds that are not fully pelletized and coated and dust, and select qualified and full seeds and put them into a mesh bag for later use.

[0044] The present invention will be further described below in conjunction with specific embodiments.

[0045] Example 1

[0046] A method for processing composite pelletized coated seeds for long-term prevention and control of major rice diseases and insect pests comprises the following steps:

[0047] S1: sieve and select rice seeds to remove chaff, branches and non-seed components, and weigh 500g of rice seeds;

[0048] S2: Prepare fillers. Weigh 500 g of clay, 250 g of bentonite and 250 g of talcum powder, pour them into a high-speed grinder and grind them thoroughly for 2 minutes. Sieve the mixed materials to 800 mesh, and weigh 500 g of mixed filler for later use.

[0049] S3: Prepare the adhesive. Accurately weigh 10 g of sodium carboxymethyl cellulose powder, add it to 1000 mL of water and fully dissolve it to prepare a 1% sodium carboxymethyl cellulose aqueous solution.

[0050] S4: Prepare the rice seed pelletized insecticide and fungicide. According to the dosage of 500 g rice seeds, accurately weigh 2.5 mL of 20% chlorfenapyr suspension, 2.5 mL of 10% trifluanid suspension, and 12.5 mL of 24% thiophanate-methyl suspension and stir them evenly.

[0051] S5: Prepare growth promoters, prepare gibberellins and brassinolide as mother solutions with a concentration of 0.01 mg / L, and amino-oligosaccharides as mother solutions with a concentration of 0.1 g / mL, and use ethyl acetate as the solvent. The volume ratio of gibberellins, brassinolide and amino-oligosaccharides in the active ingredients is 1:1:1, and mix them evenly. Pipette 5 mL of the mixed solution, add it to the pesticide in step S4 and mix thoroughly.

[0052] S6: Add 500g of rice seeds into the pelletizing coating silo, turn on the machine, adjust the speed of the coating silo to 35rpm, add 1% sodium carboxymethyl cellulose aqueous solution for 10 seconds to make the surface of the rice seeds wet, and close the water inlet switch; add 500g of the mixed filler into the material bin, turn on the material bin switch, let the filler mixture slowly fall into the silo, when the surface of the seeds is evenly coated with a layer of pelletized powder, turn on the adhesive aqueous solution switch, so that water and powder are alternately carried out;

[0053] S7: After weighing the insecticide, fungicide and growth regulator, dilute them with 50 mL of water. When performing step S6, use a pipette to suck the solution into the silo so that the agent is evenly attached to the pelletized seeds until the pelletization coating is completed;

[0054] S8: When step S6 and step S7 are finished, turn off the water inlet switch and the material bin switch, let the machine pelletize and coat for 1 minute, adjust the silo speed to 15 rpm, slowly add colorant from the silo entrance, the weight ratio of colorant to seed weight is 1:10, rotate and color for 2 minutes, open the silo door, and collect the seeds;

[0055] S9: Place the pelletized and coated seeds in a drying device, adjust the drying temperature to 35°C, and dry them with air blast for 1 hour. After drying, pass the pelletized and coated seeds through an 8-mesh sieve to remove incompletely pelletized and coated seeds and dust, select qualified and full seeds and put them into a mesh bag for later use.

[0056] Example 2

[0057] A method for processing composite pelletized coated seeds for long-term prevention and control of major rice diseases and insect pests comprises the following steps:

[0058] S1: sieve and select rice seeds to remove chaff, branches and non-seed components, and weigh 500g of rice seeds;

[0059] S2: Prepare fillers. Weigh 300 g of clay, 300 g of bentonite and 300 g of talcum powder, pour them into a high-speed grinder and grind them thoroughly for 2 minutes. Sieve the mixed materials to 800 mesh, and weigh 500 g of mixed fillers for later use.

[0060] S3: Prepare the adhesive. Accurately weigh 15 g of sodium carboxymethyl cellulose powder, add it into 1000 mL of water and fully dissolve it to prepare a 1.5% sodium carboxymethyl cellulose aqueous solution.

[0061] S4: Prepare the rice seed pelletized insecticide and fungicide. According to the dosage of 500 g rice seeds, accurately weigh 3.75 mL of 20% chlorfenapyr suspension, 5 mL of 10% trifluanid suspension, and 18 mL of 24% thiophanate-methyl suspension and stir them evenly.

[0062] S5: Prepare growth promoters, prepare gibberellins and brassinolide as mother solutions with a concentration of 0.01 mg / L, and amino-oligosaccharides as mother solutions with a concentration of 0.1 g / mL, and use ethyl acetate as the solvent. The volume ratio of gibberellins, brassinolide and amino-oligosaccharides in the active ingredients is 1:2:2, and mix them evenly. Pipette 5 mL of the mixed solution, add it to the pesticide in step S4 and mix thoroughly.

[0063] S6: Add 500g of rice seeds into the pelletizing coating silo, turn on the machine, adjust the speed of the coating silo to 35rpm, add 1.5% sodium carboxymethyl cellulose aqueous solution for 10 seconds to make the surface of the rice seeds wet, close the water inlet switch, add 500g of the mixed filler into the material bin, turn on the material bin switch, let the filler mixture slowly fall into the silo, when the surface of the seeds is evenly coated with a layer of pelletized powder, turn on the adhesive aqueous solution switch, so that the water and powder are alternately carried out;

[0064] S7: After weighing the insecticide, fungicide and growth regulator, dilute them with 50 mL of water. When performing step S6, use a pipette to suck the solution into the silo so that the agent is evenly attached to the pelletized seeds until the pelletization coating is completed;

[0065] S8: When step S6 and step S7 are finished, turn off the water inlet switch and the material bin switch, let the machine pelletize and coat for 1 minute, adjust the silo speed to 15 rpm, slowly add colorant from the silo entrance, the weight ratio of colorant to seed weight is 1:10, rotate and color for 2 minutes, open the silo door, and collect the seeds;

[0066] S9: Place the pelletized and coated seeds in a drying device, adjust the drying temperature to 35°C, and dry them with air blast for 1 hour. After drying, pass the pelletized and coated seeds through an 8-mesh sieve to remove incompletely pelletized and coated seeds and dust, select qualified and full seeds and put them into a mesh bag for later use.

[0067] Example 3

[0068] A method for processing composite pelletized coated seeds for long-term prevention and control of major rice diseases and insect pests comprises the following steps:

[0069] S1: sieve and select rice seeds to remove chaff, branches and non-seed components, and weigh 500g of rice seeds;

[0070] S2: Prepare fillers. Weigh 250 g of clay, 500 g of bentonite and 250 g of talcum powder, pour them into a high-speed grinder and grind them thoroughly for 2 minutes. Sieve the mixed materials to 800 mesh, and weigh 500 g of mixed filler for later use.

[0071] S3: Prepare the adhesive. Accurately weigh 15 g of sodium carboxymethyl cellulose powder, add it to 1000 mL of water and fully dissolve it to prepare a 1.5% sodium carboxymethyl cellulose aqueous solution.

[0072] S4: Prepare the rice seed pelletized insecticide and fungicide. According to the dosage of 500 g rice seeds, accurately weigh 3.75 mL of 20% chlorfenapyr suspension, 5 mL of 10% trifluanid suspension, and 18 mL of 24% thiophanate-methyl suspension and stir them evenly.

[0073] S5: Prepare growth promoters, prepare gibberellins and brassinolide as mother solutions with a concentration of 0.01 mg / L, and amino-oligosaccharides as mother solutions with a concentration of 0.1 g / mL, and use ethyl acetate as the solvent. The volume ratio of gibberellins, brassinolide and amino-oligosaccharides in the active ingredients is 1:2:2, and mix them evenly. Pipette 5 mL of the mixed solution, add it to the pesticide in step S4 and mix thoroughly.

[0074] S6: Add 500g of rice seeds into the pelletizing coating silo, turn on the machine, adjust the speed of the coating silo to 35rpm, add 1.5% sodium carboxymethyl cellulose aqueous solution for 10 seconds to make the surface of the rice seeds wet, close the water inlet switch, add 500g of the mixed filler into the material bin, turn on the material bin switch, let the filler mixture slowly fall into the silo, when the surface of the seeds is evenly coated with a layer of pelletized powder, turn on the adhesive aqueous solution switch, so that the water and powder are alternately carried out;

[0075] S7: After weighing the insecticide, fungicide and growth regulator, dilute them with 50 mL of water. When performing step S6, use a pipette to suck the solution into the silo so that the agent is evenly attached to the pelletized seeds until the pelletization coating is completed;

[0076] S8: When step S6 and step S7 are finished, turn off the water inlet switch and the material bin switch, let the machine pelletize and coat for 1 minute, adjust the silo speed to 15 rpm, slowly add colorant from the silo entrance, the weight ratio of colorant to seed weight is 1:10, rotate and color for 2 minutes, open the silo door, and collect the seeds;

[0077] S9: Place the pelletized and coated seeds in a drying device, adjust the drying temperature to 35°C, and dry them with air blast for 1 hour. After drying, pass the pelletized and coated seeds through an 8-mesh sieve to remove incompletely pelletized and coated seeds and dust, select qualified and full seeds and put them into a mesh bag for later use.

[0078] Example 4

[0079] A method for processing composite pelletized coated seeds for long-term prevention and control of major rice diseases and insect pests comprises the following steps:

[0080] S1: sieve and select rice seeds to remove chaff, branches and non-seed components, and weigh 500g of rice seeds;

[0081] S2: Prepare fillers. Weigh 250 g of clay, 500 g of bentonite and 250 g of talcum powder, pour them into a high-speed grinder and grind them thoroughly for 2 minutes. Sieve the mixed materials to 800 mesh, and weigh 500 g of mixed filler for later use.

[0082] S3: Prepare the adhesive. Accurately weigh 15 g of sodium carboxymethyl cellulose powder, add it to 1000 mL of water and fully dissolve it to prepare a 1.5% sodium carboxymethyl cellulose aqueous solution.

[0083] S4: Prepare the rice seed pelletized insecticide and fungicide. According to the dosage of 500 g rice seeds, accurately weigh 3.75 mL of 20% chlorfenapyr suspension, 5 mL of 10% trifluanid suspension, and 18 mL of 24% thiophanate-methyl suspension and stir them evenly.

[0084] S5: Prepare growth promoters, prepare gibberellins and brassinolide as mother solutions with a concentration of 0.01 mg / L, and amino-oligosaccharides as mother solutions with a concentration of 0.1 g / mL, and use ethyl acetate as the solvent. The volume ratio of gibberellins, brassinolide and amino-oligosaccharides in the active ingredients is 1:2:2, and mix them evenly. Pipette 5 mL of the mixed solution, add it to the pesticide in step S4 and mix thoroughly.

[0085] S6: Add 500g of rice seeds into the pelletizing coating silo, turn on the machine, adjust the speed of the coating silo to 35rpm, add 1.5% sodium carboxymethyl cellulose aqueous solution for 10 seconds to make the surface of the rice seeds wet, close the water inlet switch, add 500g of the mixed filler into the material bin, turn on the material bin switch, let the filler mixture slowly fall into the silo, when the surface of the seeds is evenly coated with a layer of pelletized powder, turn on the adhesive aqueous solution switch, so that the water and powder are alternately carried out;

[0086] S7: After weighing the insecticide, fungicide and growth regulator, dilute them with 50 mL of water. When performing step S6, use a pipette to suck the solution into the silo so that the agent is evenly attached to the pelletized seeds until the pelletization coating is completed;

[0087] S8: When step S6 and step S7 are finished, turn off the water inlet switch and the material bin switch, let the machine pelletize and coat for 1 minute, adjust the silo speed to 15 rpm, slowly add colorant from the silo entrance, the weight ratio of colorant to seed weight is 1:10, rotate and color for 2 minutes, open the silo door, and collect the seeds;

[0088] S9: Place the pelletized and coated seeds in a drying device, adjust the drying temperature to 35°C, and dry them with air blast for 1 hour. After drying, pass the pelletized and coated seeds through an 8-mesh sieve to remove incompletely pelletized and coated seeds and dust, select qualified and full seeds and put them into a mesh bag for later use.

[0089] Comparative Example 1

[0090] Conventional seed dressing and coating seed preparation includes the following steps:

[0091] S1: sieve and select rice seeds to remove chaff, branches and non-seed components, and weigh 500g of rice seeds;

[0092] S2: Prepare insecticide and fungicide for rice seed dressing coating. According to the dosage of 500 g rice seeds, accurately weigh 2.5 mL of 20% chlorfenapyr suspension, 2.5 mL of 10% trifluanid suspension, and 12.5 mL of 24% thiophanate-methyl suspension and stir them evenly.

[0093] S3: Prepare growth promoters, prepare gibberellins and brassinolide as mother liquors with a concentration of 0.01 mg / L, and amino-oligosaccharides as mother liquors with a concentration of 0.1 g / mL, and the solvents are ethyl acetate. The volume ratio of gibberellins, brassinolide and amino-oligosaccharides in the active ingredients is 1:1:1, and mix them evenly. Pipette 5 mL of the mixed solution and add it to the pesticide in step S2 and mix thoroughly.

[0094] S4: Add 1 g of the colored film-forming agent to the mixed solution of steps S2 and S3, and then add clean water to a fixed amount of 50 g, and mix thoroughly;

[0095] S5: Pour 500 g of rice seeds into a seed dressing and coating machine, turn on the machine, add the mixed solution in step S4, stir thoroughly to make the rice seeds evenly coated with the agent, spread the rice seeds after seed dressing and coating on paper and dry in the shade for later use.

[0096] Comparative Example 2

[0097] Conventional seed dressing and coating seed preparation includes the following steps:

[0098] S1: sieve and select rice seeds to remove chaff, branches and non-seed components, and weigh 500g of rice seeds;

[0099] S2: Prepare insecticide and fungicide for rice seed dressing coating. According to the dosage of 500g rice seeds, accurately weigh 3.75mL of 20% chlorfenapyr suspension, 5mL of 10% trifluanid suspension, and 18mL of 24% thiophanate-methyl suspension and stir them evenly.

[0100] S3: Prepare growth promoters, prepare gibberellins and brassinolide as mother solutions with a concentration of 0.01 mg / L, and amino-oligosaccharides as mother solutions with a concentration of 0.1 g / mL, and use ethyl acetate as the solvent. The volume ratio of gibberellins, brassinolide and amino-oligosaccharides in the active ingredients is 1:2:2, and mix them evenly. Pipette 5 mL of the mixed solution and add it to the pesticide in step S2 and mix thoroughly.

[0101] S4: Add 1 g of the colored film-forming agent to the mixed solution of steps S2 and S3, and then add clean water to a fixed amount of 50 g, and mix thoroughly;

[0102] S5: Pour 500 g of rice seeds into a seed dressing and coating machine, turn on the machine, add the mixed solution in step S4, stir thoroughly to make the rice seeds evenly coated with the agent, spread the rice seeds after seed dressing and coating on paper and dry in the shade for later use.

[0103] The seed germination and emergence test obtained by utilizing the present invention is as follows:

[0104] 1. Seed germination and emergence test

[0105] Materials and Methods

[0106] A 90 mm culture dish was lined with absorbent filter paper, which was wetted with water. 50 grains of each of Examples 1, 2, 3, 4, Comparative Examples 1, 2 and naked rice seeds were placed in each treatment group, and each group was repeated 3 times. The dishes were cultured in an incubator at 25° C., and a small amount of water was added regularly to keep the filter paper moist.

[0107] 100 rice seeds were selected from Examples 1, 2, 3, 4, Comparative Examples 1, 2 and naked rice seeds, and each group was repeated 3 times. They were evenly sown in plastic seedling trays, covered with a thin layer of soil, kept moist and placed indoors in the dark for 5 days, and then moved outdoors for seedling cultivation. Water was replenished in time during germination and emergence, and the emergence of each treatment was investigated on the 15th day after sowing.

[0108] Results and Analysis:

[0109] The results of the seed germination and emergence test are shown in Table 1. The rice germination and emergence were not significantly affected by the pelleting coating or seed dressing coating. The 7-day germination rate and 15-day emergence rate of naked rice seeds were 88.00% and 89.33%, respectively. The 7-day germination rates of Comparative Examples 1 and 2 were 88.67% and 88.33%, respectively, and the 15-day emergence rates were 89.33% and 88.67%, respectively, which were not significantly affected compared with the control. However, the 7-day germination rates of Examples 1, 2, 3, and 4 were 91.33% to 92.67%, which were significantly higher than those of naked seeds and Comparative Examples 1 and 2. Similarly, the 15-day germination rates of Examples 1, 2, 3, and 4 were 92.33% to 93.33%, which were also higher than those of naked seeds and Comparative Examples 1 and 2. This shows that the germination and emergence rates of rice seeds can be improved after pelleting and coating.

[0110] Table 1 Effects of different treatments on seed germination and emergence

[0111] deal with 7-day germination rate% 15-day germination rate% Example 1 91.33±1.15 93.33±2.52 Example 2 92.67±3.06 92.33±3.06 Example 3 92.67±1.15 92.67±1.15 Example 4 92.00±2.00 92.33±1.53 Comparative Example 1 88.67±2.52 89.33±1.15 Comparative Example 2 88.33±3.21 88.67±1.15 Naked 88.00±1.00 89.33±2.31

[0112] 2. Determination of seedling quality

[0113] Materials and Methods

[0114] 100 rice seeds were selected from Examples 1, 2, 3, 4, Comparative Examples 1, 2 and naked rice, and evenly sown in a plastic seedling tray. A thin layer of soil was covered and the seeds were kept moist and placed in a dark room for 5 days. Then, the seeds were moved outdoors for seedling raising. Ten rice seedlings were randomly selected from each treatment 30 days after sowing. The plant height, root length and fresh weight were measured after washing and drying. Each treatment was repeated 3 times.

[0115] Results and Analysis:

[0116] The quality of the rice seedlings is shown in Table 2. 30 days after sowing, the plant height of the naked seed control was 14.82 cm, and the plant heights of the seed coating comparative examples 1 and 2 were 15.18 cm and 16.97 cm, respectively, which were higher than the naked seed control, while the plant heights of Examples 1, 2, 3, and 4 were 16.17, 18.04, 17.61, and 17.09 cm, respectively, which were significantly higher than the naked seed and slightly higher than the seed coating comparative examples 1 and 2. The root length and fresh weight data were both in the trend of plant height, and both of the embodiments were better than the comparative examples. The results of the rice seedling quality measurement showed that after the rice seeds were pelletized and coated, the plant height, root length, and fresh weight increased, and the pelletized coating could improve the overall quality of the rice seedlings.

[0117] Table 2 Determination of rice seedling quality after different treatments

[0118] deal with Plant heightcm Root length cm Fresh weight g Example 1 16.17±0.43 3.36±0.22 4.61±0.32 Example 2 18.04±0.47 4.40±0.40 5.47±0.30 Example 3 17.61±0.20 3.59±0.25 5.44±0.13 Example 4 17.09±0.34 3.47±0.18 4.33±0.10 Comparative Example 1 15.18±0.14 3.37±0.18 4.19±0.35 Comparative Example 2 16.97±0.13 3.33±0.17 4.05±0.16 Naked 14.82±0.20 3.32±0.14 3.97±0.21

[0119] 3. Control effect on target pests and diseases

[0120] Materials and Methods

[0121] The rice samples of Examples 1, 2, 3, 4, Comparative Examples 1, 2 and naked rice seeds were subjected to field sowing tests, and the field seed amount was converted into naked seed amount of 8 catties / mu, and water was applied to germinate the seeds after artificial field sowing. On the 60th and 90th days after sowing, the occurrence of rice planthoppers, rice leaf rollers and sheath blight in each treatment was investigated.

[0122] Results and Analysis:

[0123] The survey results show that 60 days after sowing, after the rice seeds were pelletized and coated, the control effect of Examples 1 to 4 on rice planthoppers was 96.71% to 98.65%, the leaf protection effect on rice leaf rollers was 85.94% to 96.68%, and the control effect on sheath blight was 84.97% to 95.44%, which was better than the control effect on rice planthoppers, rice leaf rollers and sheath blight after conventional seed coating. 90 days after sowing, the control effect trend of the target pests and diseases was similar to that of 60 days. In general, after the rice seeds were pelletized and coated in the examples, the control time of the target pests and diseases can be up to 90 days or more, and the control effect is better than the conventional seed coating, indicating that the pelletized coating has a promoting or slow-release effect on the utilization rate of the agent.

[0124] Table 3 Control effects of different rice seed treatments on target pests and diseases

[0125]

[0126] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A composite pelletizing coating agent, characterized in that: The invention comprises insecticides and fungicides, growth promoters, fillers and adhesives, wherein the insecticides and fungicides are one or more of chlorantraniliprole, cyantraniliprole, clothianidin, trifluanid and thiophanate-methyl; and the growth promoters are one or more of gibberellins, amino oligosaccharides, chlorin iron, brassinolide and ampicillin.

2. A composite pelletizing coating agent according to claim 1, characterized in that: The filler is a mixture of clay, bentonite and talcum powder, and the binder is one of sodium carboxymethyl cellulose, methyl cellulose, gum arabic and polyvinyl alcohol.

3. A composite pelletizing coating agent according to claim 1, characterized in that: The insecticides and fungicides are chlorantraniliprole, trifluanid and thiophanate-methyl, and the weight ratio of the insecticides and fungicides to the weight of the seeds is 1-1.5:0.5-1:6-9:1000.

4. A composite pelletizing coating agent according to claim 1, characterized in that: The growth promoter is gibberellin, brassinolide and amino-oligosaccharide, the volume ratio of the gibberellin, brassinolide and amino-oligosaccharide is 1:1:1-1:3:4, and the addition amount of the growth promoter is 5-20 mL / kg seed.

5. A composite pelletizing coating agent according to claim 4, characterized in that: The concentrations of the gibberellins and brassinolide are 0.01 mg / L respectively, the concentration of the amino oligosaccharides is 0.1 g / mL, and the solvent used in the preparation process is ethyl acetate.

6. A composite pelletizing coating agent according to claim 2, characterized in that: The mass ratio of the clay, bentonite and talc is 1:0.5:0.5 to 1:2:

1.

7. A composite pelletizing coating agent according to claim 2, characterized in that: The adhesive is a 1% to 1.5% sodium carboxymethyl cellulose aqueous solution.

8. A method for processing the composite pelletized coating agent according to any one of claims 1 to 7, characterized in that: After the seeds are screened, adhesives and mixed fillers are added alternately at a rotation speed of 35 rpm, followed by insecticides, fungicides and growth regulators. After the addition is completed, coating is performed for 1 minute. After the coating is completed, the seeds are dried and set aside.

9. The processing method according to claim 8, characterized in that: After coating, the rotation speed is adjusted to 15 rpm, and colorant is added. The mass ratio of colorant to seeds is 1:10-20, and coloring is performed for 2 minutes.

10. The processing method according to claim 8, characterized in that: The mass ratio of the filler to the seeds is 1:1; the drying temperature is 35° C., and the drying time is 1 hour.

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