AU2020103185A4 - Rice seed coating agent and coating method - Google Patents

Rice seed coating agent and coating method Download PDF

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AU2020103185A4
AU2020103185A4 AU2020103185A AU2020103185A AU2020103185A4 AU 2020103185 A4 AU2020103185 A4 AU 2020103185A4 AU 2020103185 A AU2020103185 A AU 2020103185A AU 2020103185 A AU2020103185 A AU 2020103185A AU 2020103185 A4 AU2020103185 A4 AU 2020103185A4
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coating agent
parts
agent
rice
coating
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AU2020103185A
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Suyuan Jiang
Na Li
Chuanhai Shu
Zhiyuan Yang
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Sichuan Agricultural University
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D129/00Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
    • C09D129/02Homopolymers or copolymers of unsaturated alcohols
    • C09D129/04Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/08Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
    • A01N25/10Macromolecular compounds
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/02Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
    • A01N43/04Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
    • A01N43/22Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom rings with more than six members
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N51/00Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds having the sequences of atoms O—N—S, X—O—S, N—N—S, O—N—N or O-halogen, regardless of the number of bonds each atom has and with no atom of these sequences forming part of a heterocyclic ring
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05FORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F5/00Fertilisers from distillery wastes, molasses, vinasses, sugar plant or similar wastes or residues, e.g. from waste originating from industrial processing of raw material of agricultural origin or derived products thereof
    • C05F5/002Solid waste from mechanical processing of material, e.g. seed coats, olive pits, almond shells, fruit residue, rice hulls
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F251/00Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F261/00Macromolecular compounds obtained by polymerising monomers on to polymers of oxygen-containing monomers as defined in group C08F16/00
    • C08F261/02Macromolecular compounds obtained by polymerising monomers on to polymers of oxygen-containing monomers as defined in group C08F16/00 on to polymers of unsaturated alcohols
    • C08F261/04Macromolecular compounds obtained by polymerising monomers on to polymers of oxygen-containing monomers as defined in group C08F16/00 on to polymers of unsaturated alcohols on to polymers of vinyl alcohol
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G22/00Cultivation of specific crops or plants not otherwise provided for
    • A01G22/20Cereals
    • A01G22/22Rice
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N47/00Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
    • A01N47/08Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
    • A01N47/10Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/20Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses

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  • General Health & Medical Sciences (AREA)
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  • Polymers & Plastics (AREA)
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  • Toxicology (AREA)
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  • Botany (AREA)
  • Mechanical Engineering (AREA)
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  • Pretreatment Of Seeds And Plants (AREA)

Abstract

The present invention provides a rice seed coating agent. By grouping the coating raw materials according to their efficacy, they are used as the inner and outer coatings of the rice seeds respectively, which can realize the fully utilize of the coating raw materials. Reduce the moldy rate of rice seeds and increase the germination rate. The invention also provides a method for coating rice seeds with the coating agent, which simplifies the rice seeding operation procedure and improves the germination rate.

Description

RICE SEED COATING AGENT AND COATING METHOD TECHNICAL FIELD
[0001] The disclosure relates to the technical field of agricultural preparations, in particular to a rice seed coating agent and a method for coating rice seeds using the coating agent.
BACKGROUD
[0002] Seed coating is to use mechanical or manual methods to uniformly coat the coating agent containing pesticides, fungicides, compound fertilizers, trace elements, plant growth regulators, slow-release agents and coat-forming agents in a certain proportion, forming a smooth and firm medicinal coating. With the germination, germination, emergence and growth of seeds, the effective ingredients in the coating are gradually absorbed by the plant roots and transmitted to all parts of the seedlings, so that the seeds and seedlings can prevent and control seed-borne bacteria, soil-borne bacteria, and underground and above-ground pests.
[0003] The traditional control of rice bakanae and blight usually employs the measures of soaking seeds with medicament, adjusting the acid of bed soil, disinfection and spraying at the seedling stage, which are cumbersome and labor intensive, and the disease prevention effect is often unstable. In recent years, the rice coating agent has been more and more popularized and applied, which simplifies the rice seeding operation procedure and improves the germination D rate. However, the existing rice coating agents mostly employs a simple mixing and coating mode, ignoring the difference in the properties of different ingredients.
[0004] In view of this, the present invention is proposed.
SUMMARY
[0005] The first object of the present invention is to provide a rice seed coating agent.
[0006] The second object of the present invention is to provide a method for coating rice seeds using the coating agent.
[0007] In order to achieve the above objects, the technical solution of the present invention is as follows:
[0008] The invention relates to a rice seed coating agent, comprising an inner coating agent and an outer coating agent, the inner coating agent comprises a plant growth regulator, a nutrient enhancer, an oxygenator and a water-retaining agent; an outer coating agent comprises an insecticide, an fungicide, an antifreeze and a coat-forming agent.
[0009] Preferably, the plant growth regulator is brassinolide, the nutrient enhancer comprises straw powder and enzyme bacteria, and the oxygenator is Calcium peroxide, the water retaining agent is a tapioca resin.
[0010] Preferably, the insecticide is dinotefuran, the fungicide is carbamate, the antifreeze is ethylene glycol, and the coat- forming agentcomprises polyvinyl alcohol, sodium alginate and styrene.
[0011] Preferably, the inner coating agent comprises the following components in parts by weight: 0.02~0.07 parts of plant growth regulator, and nutrient enhancer 2.3 to 3.8 parts, 0.2 to 0.5 parts of oxygenator, 0.35 to 0.80 parts of water retaining agent.
[0012] Preferably, the outer coating agent comprises the following components in parts by weight: 0.5~1.3 parts of insecticide, 2~7 parts of fungicide, 2~6 parts of antifreeze, 1~6 parts of coat-forming agent.
[0013] Preferably, in the nutrient enhancer, the mass ratio of straw powder to ferment bacteria is (85-95): (5~15).
[0014] Preferably, the mass ratio of polyvinyl alcohol, sodium alginate and styrene in the coat-forming agent is (2-5): (1-2): (0.1-0.5).
[0015] (1) Blending the plant growth regulator, nutrient enhancer, oxygenator and water-retaining agent with water, stirring evenly to obtain the inner coating agent, blending the insecticide, fungicide, antifreeze, coat-forming agent with water and stirring evenly to obtain the outer coating agent;
[0016] Preferably, the amount of water added in the inner coating agent is 4 to 11 parts, and the amount of water added in the outer coating agent is 3~16 parts.
[0017] (2) Mixing the rice seeds with the inner coating agent prepared instep (1), coating the rice seeds by the inner coating agent under stirring conditions, and then drying, to form an inner coating on the surface of the rice seeds;
[0018] (3) Mixing the rice seeds coated with the inner coating agent with the outer coating agent prepared in step (1), coating of the rice seeds by the outer coating agent under stirring conditions, forming an outer coating on the surface of the inner coating, and to obtain the coated rice seeds after drying.
[0019] Preferably, the mass ratio of the inner coating agent to the rice seed is (1.2-1.4):1, and mass ratio of the outer coating to rice seed is (0.6-0.8):1.
[0020] The beneficial effects of the present invention:
[0021] The present invention provides a rice seed coating agent. By grouping the coating raw materials according to their efficacy, they are used as the inner and outer coatings of the rice seeds respectively, which can realize the full play of the effects of the coating raw materials. Reduce the moldy rate of rice seeds and increase the germination rate.
[0022] The invention also provides a method for coating rice seeds with the coating agent, which simplifies the rice seeding operation procedure and improves the germination rate.
DESCRIPTION OF THE EMBODIMENTS
[0023] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Other implementations based on the embodiments of the present invention obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0024] The embodiment of the present invention relates to a rice seed coating agent, which includes an inner coating agent and an outer coating agent. The inner coating agent includes a plant growth regulator, a nutrient enhancer, an oxygenator and a water-retaining agent; the outer coating agent includes insecticides, fungicides, antifreeze and coat-forming agent.
[0025] Among them, fungicides and insecticides are mainly used to prevent harmful microorganisms and pests in the soil from invading rice seeds, so fungicides and insecticides should directly contact the soil; plant growth regulators and nutrient enhancers are mainly used to promote the germination of rice seeds, which should be in direct contact with the seeds. In general, the layered coating method is more advantageous than the blended coating method. Taking into account the effects of different ingredients, the present invention uses fungicides and insecticides as the outer coating, and plant growth regulators and nutrient enhancers as an inner coating. Oxygen is the basic condition for the germination of rice seeds. After the rice seeds are coated, they are isolated from the air, which will easily reduce the oxygen and affect the germination of the seeds. Therefore, the present invention adds an oxygenator and a water-retaining agent to the inner coating, wherein the water-retaining agent can retain the moisture in the soil, and the oxygen-enhancing agent can directly release oxygen to promote germination after encountering the water retained by the water-retaining agent. In order to enhance the ability of rice seeds to resist external low temperatures, the present invention adds an antifreeze to the outer coating to provide protection for the seeds. And add a coat forming agent to the outer coating to promote the final formation of the seed coating.
[0026] In an embodiment of the present invention, the plant growth regulator used for the inner coating agent is brassinolide, and the nutrient enhancer includes straw powder and enzyme bacteria (Shimamoto, the manufacturer is Shimamoto Institute of Microbiology). The oxygenator is calcium peroxide and the antifreeze is ethylene glycol.
[0027] The insecticide used for the outer coating agent is dinotefuran, the fungicide is carbamate, the water-retaining agent is tapioca resin, and the coat-forming agent includes polyvinyl alcohol, sodium alginate and styrene.
[0028] In an embodiment of the present invention, the inner coating agent includes the following components in parts by weight: 0.02~0.07 parts of plant growth regulator, 2.3~3.8 parts of nutrient enhancer, 0.2~0.5 parts of oxygenator, water retaining agent 0.35~0.80 parts. Furthermore, in the nutrient enhancer, the mass ratio of straw powder to enzyme bacteria is (85~95): (5~15). Among them, straw powder provides organic matter for seed germination, and enzyme bacteria decompose organic matter into various nutrients for seed germination and growth.
[0029] The outer coating agent includes the following components in parts by weight: 0.5 to 1.3 parts of insecticide, 2 to 7 parts of fungicide, 2 to 6 parts of antifreeze, and 1 to 6 parts of coat forming agent. Furthermore, in the coat forming agent, the mass ratio of polyvinyl alcohol, sodium alginate and styrene is (2-5): (1-2): (0.1-0.5). The function of the coat-forming agent is to prevent the coating agent from falling off during seed soaking and reduce the efficacy of the medicine. Among them, sodium alginate is an environmentally friendly natural polymer material, which has the advantages of good biocompatibility, degradability, low toxicity and relatively low price. The mixing of polyvinyl alcohol and styrene is prone to photosensitive reaction. After the three are mixed, polymerization reaction occurs to form a network structured blend crosslinking, avoiding the use of traditional chemical crosslinking agents, and having the advantages of low carbon and environmental protection.
[0030] The present invention also relates to a method for coating rice seeds using the above coating agent, which includes the following steps:
[0031] (1) Blending plant growth regulators, nutrient enhancers, oxygen enhancers, water-retaining agents and water, stirring evenly to obtain the inner coating agent, and blending the insecticides, fungicides, antifreeze, and coat-forming agents with water, stirring evenly to obtain the outer coating agent;
[0032] In an embodiment of the present invention, the amount of water added in the inner coating agent is 4 to 11 parts, and the amount of water added in the outer coating agent is 3 to 16 parts, and both the inner coating agent and the outer coating agent obtained are pasty mixtures.
[0033] In an embodiment of the present invention, the mass ratio of the inner coating agent to the rice seed is (1.2 to 1.4):1, and the mass ratio of the outer coating agent to the rice seed is (0.6 to 0.8):1.
[0034] (2) Mixing the rice seeds with the inner coating agent prepared in step (1), coating the rice seeds by the inner coating agent under stirring conditions, and then dry, to form an inner coating on the surface of the rice seeds;
[0035] (3) Mixing the rice seeds coated with the inner coating agent with the outer coating agent prepared in step (1), and coating the rice seeds by the outer coating agent under stirring conditions, and form an outer coating on the surface of the inner coating, the coated rice seeds are obtained after drying.
[0036] In a specific embodiment of the present invention, the process of coating rice seeds is as follows:
[0037] (1) Preparatory work before coating: Screen rice seeds and remove grass seeds and impurities. For example, too much impurities in rice seeds will waste the coating agent and reduce the coating effect. Especially when there is too much dust on the surface of rice seeds, the coating agent cannot adhere well;
[0038] Testing the moisture content of the rice seeds after screening. If the moisture content is lower than 11%, they will be directly coated; if the moisture content is higher than 11%, the rice seeds need to be placed in a low-temperature dryer and dried at 35C. If the water content of rice seeds is too high, the coated rice seeds are easy to germinate during storage.
[0039] (2) Separately configuring the inner coating agent and the outer coating agent. The inner coating agent includes plant growth regulators, nutrient enhancers, oxygenators, water-retaining agents and water, and the outer coating agents include insecticides, fungicides, antifreeze, coat forming agent and water.
[0040] (3) After mixing the inner coating agent with rice seeds, placing them in a seed coating machine for coating. The environmental temperature during coating is not less than 10°C. After the inner coat coating is completed, placing the seeds in a cool and dry environment for 2 to 3 hours.
[0041] (4) After mixing the rice seeds coated with the inner coating agent with the outer coating agent, placing them in a seed coating machine for coating, and placing the coated rice seeds in a low-temperature dryer. Drying treatment below 35°C.
[0042] (5) Testing the moisture content of the coated rice seeds after drying. If the moisture content is less than 13%, it is a qualified product, and it can be stored in waterproof packaging.
[0043] When coating, the mass ratio of coating agent to rice seeds is (1.8-2.2):1. If the seeds have awns and the length and width are large, the quality ratio of the coating agent to the rice seeds can be appropriately increased; for the awnless and round seeds, the quality ratio of the coating agent can be appropriately reduced. If the amount of coating agent added is too much, the reagent cost will be increased. If the amount of coating agent added is too little, it will cause uneven coating and affect the coating quality.
[0044] Example 1
[0045] A rice seed coating agent includes an inner coating agent and an outer coating agent. The inner coating agent contains 0.05 parts of brassinolide, 2.28 parts of straw powder, 0.12 parts of enzyme bacteria, 0.3 parts of calcium peroxide, and 0.5 parts of tapioca resin. Enzyme bacteria were purchased from Shimamoto Institute of Microbiology.
[0046] The outer coating agent contains 0.9 parts of dinotefuran, 5 parts of carbamate, 3 parts of ethylene glycol, 3 parts of polyvinyl alcohol, 2 parts of sodium alginate, and 0.5 parts of styrene.
[0047] Example 2
[0048] A rice seed coating agent includes an inner coating agent and an outer coating agent. The inner coating agent contains 0.02 parts of brassinolide, 2.28 parts of straw powder, 0.12 parts of enzyme bacteria, 0.2 parts of calcium peroxide, and 0.35 parts of tapioca resin.
[0049] The outer coating agent contains 0.5 part of dinotefuran, 2 parts of carbamate, 2 parts of ethylene glycol, 2 parts of polyvinyl alcohol, 1 part of sodium alginate, and 0.1 part of styrene.
[0050] Example 3
[0051] A rice seed coating agent includes an inner coating agent and an outer coating agent. The inner coating agent contains 0.07 parts of brassinolide, 2.28 parts of straw powder, 0.12 parts of enzyme bacteria, 0.5 parts of calcium peroxide, and 0.80 parts of tapioca resin.
[0052] The outer coating agent contains 1.3 parts of dinotefuran, 7 parts of carbamate, 6 parts of ethylene glycol, 3 parts of polyvinyl alcohol, 2 parts of sodium alginate, and 0.5 parts of styrene.
[0053] Example 4
[0054] A rice seed coating agent includes an inner coating agent and an outer coating agent. The inner coating agent contains 0.05 parts of brassinolide, 2.28 parts of straw powder, 0.12 parts of enzyme bacteria, 0.3 parts of calcium peroxide, and 0.5 parts of tapioca resin.
[0055] The outer coating agent contains 0.9 parts of dinotefuran, 5 parts of carbamate, 3 parts of ethylene glycol, and 5 parts of sodium alginate.
[0056] Comparative example 1
[0057] A rice seed coating agent, containing 0.05 parts of brassinolide, 2.28 parts of straw powder, 0.12 parts of enzyme bacteria, 0.3 parts of calcium peroxide, 0.5 parts of tapioca resin, 0.9 parts of dinotefuran, and carbamate 5 Parts, 3 parts of ethylene glycol, 3 parts of polyvinyl alcohol, 2 parts of sodium alginate, 0.5 parts of styrene.
[0058] Comparative example 2
[0059] A commercially available Bayer Irida product was used as the coating agent.
[0060] Experimental process and results
[0061] (1) Statistics of mold growth rate: Pick 600 full rice seeds, divide them into 6 groups, and use the coating agents prepared in Examples 1 to 4 and Comparative Examples 1 and 2 for coating. Store the coated seeds at a temperature of 25±3°C and a humidity of 50±10%. The yellow or white mold on the surface of the seeds is judged to be moldy, and the moldy rate of the seeds is counted after 14 days.
[0062] (2) Statistics of germination rate, germination index and vigor index: Choose 600 full rice seeds, divide them into 6 groups, and use the coating agents prepared in Examples 1 to 4 and Comparative Examples 1 and 2 respectively for coating. Place the coated seeds in a germination box with a size of 20 cmx20 cmx10 cm, and two layers of special germination paper are placed in the box. Add 20 mL of distilled water to the box, place the seeds evenly on moist germination paper, and cultivate at a constant temperature of 30±1°C. The day it is put into the incubator is recorded as 0 d, and the number of germination (normal seedling number) is recorded every day, and the number of germination is counted on the 7th day and the seedlings are cut and dried and weighed. Calculate the germination rate, germination index (GI) and vigor index (VI) according to the following formula:
[0063] Germination number = normal seedling number / test seed number x 100%
[0064] Germination potential = number of normal seedlings in the first 3 days / number of seeds to be tested x 100%
[0065] GI=Z(Gt/Dt)
[0066] VI=GIxS
[0067] In the formula, Dt is the number of days of germination, Gt is the number of seeds that germinate on the day corresponding to Dt; S is the dry weight of seedlings in a certain period of time (7 d), in g.
[0068] The statistical results of the above experiments are shown in Table 1.
[0069] Table 1 Germination status of seeds treated with different coatings
[0070]
Examples/ Moldy rate(%) Germination Germinative Germination Vitality
Comparative rate (%) energy (%) index index
Example
Examples 0 96 74 36 7.92
Examples2 1 93 70 32 7.32
Examples3 0 98 79 39 8.24
Examples4 2 91 68 30 6.03
Comparative 3 89 66 30 5.82
Example 1
Comparative 4 88 66 27 5.24
Example 2
[0071] The data in Table 1 shows that comparing Examples 1 to 4 with Comparative Examples 1 and 2, using the coating agent provided by the present invention to coat rice seeds, the moldy rates are significantly reduced, and the germination rates are all above 90%. In Comparative Example 1, when the reagents were blended and then coated, the germination of the seeds was obviously worse than that of the examples, indicating that the coating agent can ensure the normal germination of rice seeds and the slow release of active ingredients.
[0072] The above are merely specific embodiments of the present invention, but the protection scope of the present invention is not limited to them. Varieties and modifications can be easily made by those person skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims (10)

Therefore, the protection scope of the present invention is defined as the protection scope of the claims. Claims WHAT IS CLAIMED IS:
1. A rice seed coating agent, characterized in that, comprising an inner coating agent and an outer coating agent, the inner coating agent comprises a plant growth regulator, a nutrient enhancer, an oxygenator and a water-retaining agent; an outer coating agent comprises an insecticide, an fungicide, an antifreeze and a coat-forming agent.
2. The rice seed coating agent according to claim 1, characterized in that, the plant growth regulator is brassinolide, the nutrient enhancer comprises straw powder and enzyme bacteria, and the oxygenator is Calcium peroxide, the water retaining agent is a tapioca resin.
3. The rice seed coating agent according to claim 1, characterized in that, the insecticide is dinotefuran, the fungicide is carbamate, the antifreeze is ethylene glycol, and the coat forming agent comprises polyvinyl alcohol, sodium alginate and styrene.
4. The rice seed coating agent according to claim 1 or 2, characterized in that, the inner coating agent comprises the following components in parts by weight: 0.02~0.07 parts of plant growth regulator, and nutrient enhancer 2.3 to 3.8 parts, 0.2 to 0.5 parts of oxygenator, 0.35 to 0.80 parts of water retaining agent.
5. The rice seed coating agent according to claim 1 or 3, characterized in that, the outer coating agent comprises the following components in parts by weight: 0.5~1.3 parts of insecticide, 2~7 parts of fungicide, 2~6 parts of antifreeze, 1~6 parts of coat-forming agent.
6. The rice seed coating agent according to claim 2, characterized in that, in the nutrient enhancer, the mass ratio of straw powder to ferment bacteria is (85-95): (5-15).
7. The rice seed coating agent according to claim 3, characterized in that, the mass ratio of polyvinyl alcohol, sodium alginate and styrene in the coat-forming agent is (2~5): (1~2):
(0.1~0.5).
8. A method for coating rice seeds with the coating agent according to any one of claims 1 to 7, characterized in that, it comprises the following steps:
(1) Blending the plant growth regulator, nutrient enhancer, oxygenator and water-retaining agent with water, stirring evenly to obtain the inner coating agent, blending the insecticide, fungicide, antifreeze, coat-forming agent with water and stirring evenly to obtain the outer coating agent;
(2) Mixing the rice seeds with the inner coating agent prepared in step (1), coating the rice seeds by the inner coating agent under stirring conditions, and then drying, to form an inner coating on the surface of the rice seeds;
(3) Mixing the rice seeds coated with the inner coating agent with the outer coating agent prepared in step (1), coating of the rice seeds by the outer coating agent under stirring conditions, forming an outer coating on the surface of the inner coating, and to obtain the coated rice seeds after drying.
9. The method according to claim 8, characterized in that, in step (1), the amount of water added in the inner coating agent is 4 to 11 parts, and the amount of water added in the outer coating agent is 3~16 parts.
10. The method according to claim 8, characterized in that, in steps (2) and (3), the mass ratio of the inner coating agent to the rice seed is (1.2-1.4):1, and mass ratio of the outer coating to rice seed is (0.6~0.8):1.
AU2020103185A 2020-11-02 2020-11-02 Rice seed coating agent and coating method Ceased AU2020103185A4 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113897098A (en) * 2021-11-04 2022-01-07 北农(海利)涿州种衣剂有限公司 Seed coat film forming agent and preparation method thereof
CN114097354A (en) * 2021-11-10 2022-03-01 广东省农业科学院水稻研究所 Flooding-resistant direct-seeding rice seed coating and preparation method thereof
CN114258836A (en) * 2021-12-15 2022-04-01 中北大学 Nitrogen-phosphorus-containing biodegradable polymer double-crosslinked network hydrogel soilless culture substrate and preparation method thereof
CN114375642A (en) * 2021-11-29 2022-04-22 四川农业大学 Method for improving germination rate of direct-seeded rice seeds under low-oxygen condition
CN115349322A (en) * 2022-10-21 2022-11-18 海南大学三亚南繁研究院 Seed treatment method for preventing and controlling soybean seed-borne diseases

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113897098A (en) * 2021-11-04 2022-01-07 北农(海利)涿州种衣剂有限公司 Seed coat film forming agent and preparation method thereof
CN113897098B (en) * 2021-11-04 2022-10-14 北农(海利)涿州种衣剂有限公司 Seed coat film forming agent and preparation method thereof
CN114097354A (en) * 2021-11-10 2022-03-01 广东省农业科学院水稻研究所 Flooding-resistant direct-seeding rice seed coating and preparation method thereof
CN114097354B (en) * 2021-11-10 2024-04-02 广东省农业科学院水稻研究所 Flood-resistant direct seeding rice seed coating and preparation method thereof
CN114375642A (en) * 2021-11-29 2022-04-22 四川农业大学 Method for improving germination rate of direct-seeded rice seeds under low-oxygen condition
CN114258836A (en) * 2021-12-15 2022-04-01 中北大学 Nitrogen-phosphorus-containing biodegradable polymer double-crosslinked network hydrogel soilless culture substrate and preparation method thereof
CN115349322A (en) * 2022-10-21 2022-11-18 海南大学三亚南繁研究院 Seed treatment method for preventing and controlling soybean seed-borne diseases

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