Plant growth regulator with abundance branch element as effective component and application of plant growth regulator

Abstract

The invention relates to a plant growth regulator with abundance branch element as an effective component and application of the plant growth regulator, and belongs to the technical field of plant growth regulators. In order to effectively regulate the growth and development of crops, the branch abundance element is used as an effective component, auxiliaries are added to prepare the plant growth regulator, the dosage forms of the plant growth regulator comprise soluble powder, soluble granules, a seed coating agent and an aqueous solution, and the weight percentage of the branch abundance element in the plant growth regulator is 0.05-20%. The plant growth regulator has the advantages of being low in cost, simple in preparation method, convenient to use and store, low in toxicity, few in residue, safe to use and small in damage and pollution to the ecological environment, the proportion of all the components in the plant growth regulator is reasonable, the growth and development process of crops and vegetables can be effectively regulated through scientific application, and the plant growth regulator has a wide application prospect. And the effects of stabilizing and increasing yield, improving quality and enhancing crop disease and pest resistance are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of plant growth regulators, and specifically relates to a plant growth regulator with fengzhisu as an effective ingredient and application thereof. Background Art

[0002] Plant growth regulators are a type of pesticide used to regulate plant growth and development, including synthetic compounds with similar effects to natural plant hormones and natural plant hormones extracted from organisms. With the decreasing arable land area on the earth and the growing population, coupled with the frequent occurrence of natural disasters, plant growth regulators have received more and more attention in ensuring food security and increasing production. Traditional plant growth regulators have high residual content, high pollution, poor safety, low utilization rate, and do not meet the development needs of ecological agriculture. Therefore, in order to increase the yield of crops in my country and meet the needs of the growing population, it is of great significance to develop new multifunctional plant growth regulators.

[0003] Fengzhisu, also known as anisic acid and chemically named 4-methoxybenzoic acid, is a compound with plant-promoting properties isolated from the metabolites of endophytic fungi in ice flower. Anisic acid is an important organic synthesis intermediate and modifier, as well as an important raw material in the fields of preservation and pharmaceuticals. It is widely used in the medical, food and daily chemical industries. For example, anisic acid can participate in the synthesis of methyl anisate and ethyl anisate, which are important raw materials for the preparation of flavors, toothpastes and dentifrice. Our laboratory's preliminary research found that Fengzhisu can be isolated from the metabolites of endophytic fungi in ice flower, and has the characteristics of low toxicity. The acute toxicity is: subcutaneous LD50 of mice: 400mg / kg; oral LD50 of rabbits>5000mg / kg. At present, there is no report on the use of Fengzhisu as a plant growth regulator in the existing technology. Therefore, it will be of great significance if Fengzhisu can be used as an effective ingredient to make a plant growth regulator and use it to regulate the growth of food crops. Summary of the invention

[0004] In order to effectively regulate the growth and development of crops, the present invention uses the plant growth-promoting factor separated from the metabolites of endophytic fungi of ice flowers in the laboratory in the early stage as an effective ingredient to prepare a plant growth regulator, and uses it to regulate the growth of crops.

[0005] In order to solve the above technical problems and obtain corresponding technical effects, the present invention provides the following specific technical solutions:

[0006] The first object of the present invention is to provide a plant growth regulator with fengzhisu as an effective ingredient, wherein the fengzhisu is anisic acid, and the weight percentage of the fengzhisu in the plant growth regulator is 0.05-20%.

[0007] In one embodiment of the present invention, the plant growth regulator is in the form of a soluble powder, a soluble granule, a seed coating agent or an aqueous solution.

[0008] In one embodiment of the present invention, the soluble powder is made of the following raw materials in weight percentage: 0.05-20% of Fengzhisu and 5-20% of auxiliary agent, and the balance is soluble filler; the soluble granules are made of the following raw materials in weight percentage: 0.05-20% of Fengzhisu and 5-20% of auxiliary agent, and the balance is soluble filler; the seed coating agent is made of the following raw materials in weight percentage: 0.05-20% of Fengzhisu, 2-10% of film-forming agent, 2-8% of dispersant, 0.1-2% of thickener, 0.5-2% of wetting agent and 0-5% of colorant, and the balance is water; the aqueous solution is made of the following raw materials in weight percentage: 0.05-20% of Fengzhisu and 5-20% of auxiliary agent, and the balance is water.

[0009] In one embodiment of the present invention, the soluble filler in the soluble powder or soluble granules is any one of sodium sulfate, sodium bicarbonate, anhydrous sodium carbonate, anhydrous calcium carbonate, potassium bicarbonate, ammonium sulfate, sodium chloride, potassium chloride, soluble starch, white carbon black and urea, or a mixture of any two or more thereof.

[0010] In one embodiment of the present invention, the auxiliary agent in the soluble powder or aqueous solution is any one or a combination of two of a nonionic surfactant and an ionic surfactant.

[0011] In one embodiment of the present invention, the nonionic surfactant is any one of alkyl aryl polyoxyethylene ether, fatty alcohol polyoxyethylene ether and fatty acid polyoxyethylene ester, or a mixture of any two or more thereof; the ionic surfactant is an anionic surfactant, and the anionic surfactant is any one of alkylbenzene sulfonate, α-olefin sulfonate, alkyl sulfonate, α-sulfonic monocarboxylate, fatty acid sulfonalkyl ester, succinate sulfonate, alkyl glyceryl ether sulfonate, alkyl naphthalene sulfonate, lignin sulfonate, alkyl phosphate monoester and diester salts, fatty alcohol polyoxyethylene ether phosphate monoester and diester salts, fatty alcohol sulfate ester salts and secondary alkyl sulfate ester salts, or a mixture of any two or more thereof.

[0012] In one embodiment of the present invention, the auxiliary agent in the soluble granules is a mixture of a surfactant, a binder and a disintegrant, wherein the mass ratio of surfactant: binder: disintegrant is 2:1:1, and the surfactant is a combination of any one or two of a non-ionic surfactant and an ionic surfactant.

[0013] In one embodiment of the present invention, the nonionic surfactant is any one of alkyl aryl polyoxyethylene ether, fatty alcohol polyoxyethylene ether and fatty acid polyoxyethylene ester, or a mixture of any two or more thereof; the ionic surfactant is an anionic surfactant, and the anionic surfactant is any one of alkylbenzene sulfonate, α-olefin sulfonate, alkyl sulfonate, α-sulfon monocarboxylate, fatty acid sulfonalkyl ester, succinate sulfonate, alkyl glycerol ether sulfonate, alkyl naphthalene sulfonate, lignin sulfonate, alkyl phosphate monoester, fatty alcohol polyoxyethylene ether phosphate monoester, fatty alcohol sulfate and secondary alkyl sulfate.

[0014] In one embodiment of the present invention, the binder is any one of starch, xanthan gum, polyvinyl alcohol, dextrin, gum arabic, gelatin, sodium silicate, carboxymethyl cellulose, polyvinyl pyrrolidone and polyethylene glycol, or a mixture of any two or more thereof; the disintegrant is any one of ammonium sulfate, anhydrous sodium carbonate, sodium bicarbonate, calcium chloride, bentonite and sodium chloride, or a mixture of any two or more thereof.

[0015] In one embodiment of the present invention, the film-forming agent in the seed coating agent is any one of polyvinyl alcohol, polyglycerol and sodium alginate, or a mixture of any two or more thereof; the dispersant is any one of naphthalene sulfonate, lignin sulfonate and polycarboxylate, or a mixture of any two or more thereof; the thickener is any one of xanthan gum, hydroxymethyl cellulose, gelatin, seaweed, gypsum, hydroxyethyl cellulose, methyl cellulose, magnesium aluminum silicate and polyvinyl alcohol, or a mixture of any two or more thereof; the wetting agent is any one of polyoxyethylene alkylphenol ether, polyoxyethylene fatty alcohol ether, polyoxyethylene polyoxypropylene block copolymer, alkyl sulfate, sulfonate, fatty acid, fatty acid ester sulfate, carboxylic acid soap, phosphate and silicone non-ionic surfactant, or a mixture of any two or more thereof; the colorant is any one of basic fuchsin, acid fuchsin, basic violet, rose essence and acid violet, or a mixture of any two or more thereof.

[0016] It is further defined that the components in the mixture of the above components are mixed in any ratio.

[0017] It is further defined that the soluble powder is prepared by the following method: various components are mixed according to corresponding proportions and then crushed.

[0018] It is further defined that the soluble granules are prepared by the following method: the components are mixed according to corresponding ratios, crushed to obtain a desired particle size, granulated and then dried.

[0019] It is further specified that the seed coating agent is prepared by the following method: adding a film-forming agent to water, stirring until dissolved, adding a thickener and mixing, and then adding branch-enhancing agent, a dispersant, a wetting agent and a colorant and dispersing them therein, and mixing them uniformly to prepare the seed coating agent.

[0020] It is further defined that the aqueous solution is prepared by the following method: Fengzhisu, auxiliary agents and water are mixed in corresponding proportions.

[0021] The second object of the present invention is to provide the use of the above plant growth regulator in promoting rice growth.

[0022] Beneficial effects of the present invention:

[0023] Fengzhisu, also known as anisic acid, can be isolated from microbial metabolites and has the characteristics of low toxicity. Therefore, the present invention uses Fengzhisu as an effective ingredient to prepare a new plant growth regulator. The dosage form of the new plant growth regulator provided by the present invention includes soluble powder, soluble granules, seed coating agent and water agent, and the weight percentage of Fengzhisu in the plant growth regulator is 0.05-20%. The plant growth regulator product provided by the present invention has low cost, simple preparation method, convenient use, convenient storage, low toxicity, less residue, safe use, less damage and pollution to the ecological environment, and is conducive to protecting the safety of humans and animals. The proportion of each component is reasonable, and the growth and development process of crops and vegetables can be effectively regulated through scientific application, achieving stable production and increased production, improving quality, and enhancing the effects of crop resistance to diseases and insect pests. The present invention provides a research basis for the next step of registration and application, batch production and large-scale agricultural use of plant growth regulators with Fengzhisu as an effective ingredient, which has important practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the chemical structure diagram of Fengzhisu. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific implementation methods and the accompanying drawings of the specification. It should be understood that the embodiments described in the present invention are not all embodiments of the present invention, and the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] The terms "comprising," "including," "having," "containing," or any other variations thereof, as used in the following examples, are intended to cover a non-exclusive inclusion. For example, a composition, step, method, article, or apparatus comprising the listed elements is not necessarily limited to only those elements, but may include other elements not expressly listed or inherent to such composition, step, method, article, or apparatus.

[0027] When equivalent, concentration or other value or parameter is represented by the range limited by range, preferred range or a series of upper preferred value and lower preferred value, this should be understood as specifically disclosing all ranges formed by any pairing of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether the scope is disclosed separately. For example, when disclosing range "1 to 5", described range should be interpreted as including range "1 to 4", "1 to 3", "1 to 2", "1 to 2 and 4 to 5", "1 to 3 and 5" etc. When numerical range is described in this article, unless otherwise stated, the scope is intended to include its end value and all integers and fractions within the scope. In the present application specification and claims, range limitation can be combined and / or interchanged, if these ranges are not otherwise stated, include all sub-ranges contained therein.

[0028] The endpoints and any values ​​of the ranges disclosed in the invention are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of each range, the endpoint values ​​of each range and the individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be regarded as specifically disclosed in this article.

[0029] The experimental methods used in the following examples are all conventional methods unless otherwise specified, and the materials, reagents and instruments used are all conventional materials, reagents and instruments in the art unless otherwise specified, and can be obtained by those skilled in the art through commercial channels.

[0030] The Fengzhisu of the present invention is also known as anisic acid, and its chemical name is 4-methoxybenzoic acid, and its chemical structural formula is as follows: Figure 1 shown.

[0031] Example 1: Plant growth regulator with Fengzhisu as active ingredient

[0032] The plant growth regulator with Fengzhisu as the active ingredient provided in this embodiment is a soluble powder prepared from the following raw materials in percentage by weight: 8% sodium dodecylbenzene sulfonate, 0.05% Fengzhisu, and the rest being anhydrous sodium carbonate as a carrier.

[0033] The specific preparation method is as follows: the weighed components in the formula are mixed evenly in a mixing cylinder according to corresponding proportions, crushed by a super air flow mill and then mixed evenly to obtain the soluble powder product of the present invention.

[0034] Example 2: Plant growth regulator with Fengzhisu as active ingredient

[0035] The plant growth regulator with Fengzhisu as the active ingredient provided in this embodiment is a soluble powder prepared from the following raw materials in percentage by weight: 8% sodium dodecylbenzene sulfonate, 20% Fengzhisu, and the rest being anhydrous sodium carbonate as a carrier.

[0036] The specific preparation method is as follows: the weighed components in the formula are mixed evenly in a mixing cylinder according to corresponding proportions, crushed by a super air flow mill and then mixed evenly to obtain the soluble powder product of the present invention.

[0037] Example 3: Plant growth regulator with Fengzhisu as active ingredient

[0038] The plant growth regulator with fengzhisu as the active ingredient provided in this embodiment is a soluble granule prepared from the following raw materials in percentage by weight: 0.05% fengzhisu, 8% sodium dodecylbenzene sulfonate, 4% ammonium sulfate, 4% carboxymethyl cellulose, and 83.95% soluble starch.

[0039] The specific preparation method is as follows: the weighed Fengzhisu and other various auxiliary components in the formula are mixed according to the corresponding ratio, and then crushed by a super air flow mill to obtain the required particle size to obtain granulation materials, and the granulation materials are quantitatively fed into the granulator for extrusion granulation, and then dried by a dryer to obtain the soluble granule product of the present invention.

[0040] Example 4: Plant growth regulator with Fengzhisu as active ingredient

[0041] The plant growth regulator with fengzhisu as the active ingredient provided in this embodiment is a soluble granule prepared from the following raw materials in percentage by weight: 20% fengzhisu, 8% sodium dodecylbenzene sulfonate, 4% ammonium sulfate, 4% carboxymethyl cellulose, and 64% soluble starch.

[0042] The specific preparation method is as follows: the weighed Fengzhisu and other various auxiliary components in the formula are mixed according to the corresponding ratio, and then crushed by a super air flow mill to obtain the required particle size to obtain granulation materials, and the granulation materials are quantitatively fed into the granulator for extrusion granulation, and then dried by a dryer to obtain the soluble granule product of the present invention.

[0043] Example 5: Plant growth regulator with Fengzhisu as active ingredient

[0044] The plant growth regulator with fengzhisu as the active ingredient provided in this embodiment is a seed dressing agent, which is prepared from the following raw materials in weight percentage: fengzhisu 0.05%, sodium alginate 8%, sodium lignin sulfonate 4%, xanthan gum 2%, polyoxyethylene alkylphenol ether 1%, basic fuchsin 1%, and the balance is water.

[0045] The specific preparation method is as follows: add the film-forming agent sodium alginate to water, stir until completely dissolved, add the thickener xanthan gum, and mix thoroughly until uniform. Then add branching agent, dispersant sodium lignin sulfonate, wetting agent polyoxyethylene alkylphenol ether, and colorant basic fuchsin to disperse and mix thoroughly to obtain the seed coating product of the present invention.

[0046] Example 6: Plant growth regulator with Fengzhisu as active ingredient

[0047] The plant growth regulator with fengzhisu as the active ingredient provided in this embodiment is a seed dressing agent, which is prepared from the following raw materials in weight percentage: fengzhisu 20%, sodium alginate 8%, sodium lignin sulfonate 4%, xanthan gum 2%, polyoxyethylene alkylphenol ether 1%, basic fuchsin 1%, and the balance is water.

[0048] The specific preparation method is as follows: add the film-forming agent sodium alginate to water, stir until completely dissolved, add the thickener xanthan gum, and mix thoroughly until uniform. Then add branching agent, dispersant sodium lignin sulfonate, wetting agent polyoxyethylene alkylphenol ether, and colorant basic fuchsin to disperse and mix thoroughly to obtain the seed coating product of the present invention.

[0049] Example 7: Plant growth regulator with Fengzhisu as active ingredient

[0050] The plant growth regulator with Fengzhisu as the active ingredient provided in this embodiment is an aqueous solution, which is prepared from the following raw materials in percentage by weight: 0.05% Fengzhisu, 10% sodium dodecylbenzene sulfonate, and the balance water.

[0051] The specific preparation method is as follows: Fengzhisu, sodium dodecylbenzene sulfonate and water are mixed evenly in a mixing and stirring kettle according to corresponding proportions to obtain the aqueous product of the present invention.

[0052] Example 8: Plant growth regulator with Fengzhisu as active ingredient

[0053] The plant growth regulator with Fengzhisu as the active ingredient provided in this embodiment is an aqueous solution, which is prepared from the following raw materials in percentage by weight: 2% Fengzhisu, 10% sodium dodecylbenzene sulfonate, and the balance water.

[0054] The specific preparation method is as follows: Fengzhisu, sodium dodecylbenzene sulfonate and water are mixed evenly in a mixing and stirring kettle according to corresponding proportions to obtain the aqueous product of the present invention.

[0055] The following examples are for verifying the activity of different dosage forms of plant growth regulators with fengzhisu as the active ingredient.

[0056] Example 9: Effect of seed coating agent with Fengzhisu as active ingredient on rice growth

[0057] (1) Weighing an appropriate amount of the seed coating agent containing Fengzhisu as an effective ingredient prepared in Example 6, adding water, and preparing a Fengzhisu seed coating agent having an effective content of Fengzhisu of 150 μg / L;

[0058] (2) Select seeds of the rice variety Longjing 31 with full and uniform grain size, disinfect them with 5% sodium hypochlorite by volume for 3 minutes, rinse them with distilled water for 3 times and drain the water; then coat the rice seeds according to the standard of adding 1 mL of seed coating agent per 500 g of seeds, and dry them in the shade.

[0059] (3) The coated rice seeds were used in a pot experiment. The plant height and fresh weight of the rice were measured after 14 days of growth. The results are shown in Table 1.

[0060] Table 1 Effects of seed dressing agent with Fengzhisu as active ingredient on the growth of rice Longjing 31 seedlings

[0061]

[0062] It can be seen from Table 1 that when rice is treated with Fengzhisu seed coating agent, the plant height, seedling fresh weight and root fresh weight of rice can be significantly increased, indicating that Fengzhisu seed coating agent has a significant growth-promoting effect.

[0063] Example 10: Effect of soluble powder with Fengzhisu as active ingredient on rice growth

[0064] (1) Weigh an appropriate amount of the soluble powder prepared in Example 2 with Fengzhisu as the active ingredient, add water, and prepare a solution with an effective content of Fengzhisu of 150 μg / L;

[0065] (2) Selecting seeds of the rice variety Longjing 31 with full and uniform grain size, sterilizing them with 5% sodium hypochlorite by volume for 3 min, rinsing them with distilled water for 3 times, and then soaking them in distilled water;

[0066] (3) Uniform seeds were selected and placed in a 9-cm diameter culture dish and cultured with distilled water. When the seedlings grew to one leaf and one heart, nutrient solution was used to culture them until they had two leaves and one heart. Then, a solution containing Fengzhisu was sprayed once every 12 hours for a total of 3 times. After 3 days, the plant height and fresh weight of rice were measured. The results are shown in Table 2.

[0067] Table 2 Effects of soluble powder with Fengzhisu as active ingredient on the growth of rice Longjing 31 seedlings

[0068]

[0069] It can be seen from Table 2 that when rice is treated with Fengzhisu soluble powder, the plant height, seedling fresh weight and root fresh weight of rice can be significantly increased, indicating that Fengzhisu soluble powder has a significant growth-promoting effect.

[0070] Example 11: Effect of soluble granules with Fengzhisu as active ingredient on rice growth

[0071] (1) Weigh an appropriate amount of the soluble granules prepared in Example 4 with Fengzhisu as the active ingredient, add water, and prepare a solution with an effective content of Fengzhisu of 150 μg / L;

[0072] (2) Selecting seeds of the rice variety Longjing 31 with full and uniform grain size, sterilizing them with 5% sodium hypochlorite by volume for 3 min, rinsing them with distilled water for 3 times, and then soaking them in distilled water;

[0073] (3) Uniform seeds were selected and placed in a 9 cm diameter culture dish and cultured with distilled water. When the seedlings grew to one leaf and one heart, nutrient solution was used to culture them until they had two leaves and one heart. Then, a solution containing Fengzhisu was sprayed once every 12 hours for a total of 3 times. After 3 days, the plant height and fresh weight of rice were measured. The results are shown in Table 3.

[0074] Table 3 Effects of soluble granules with Fengzhisu as active ingredient on the growth of rice Longjing 31 seedlings

[0075]

[0076] It can be seen from Table 3 that when rice is treated with Fengzhisu soluble granules, the plant height, seedling fresh weight and root fresh weight of rice can be significantly increased, indicating that Fengzhisu soluble granules have a significant growth-promoting effect.

[0077] Example 12: Effect of aqueous solution with Fengzhisu as active ingredient on rice growth

[0078] (1) taking an appropriate volume of the aqueous solution prepared in Example 8 with Fengzhisu as the active ingredient, adding water to prepare an aqueous solution of Fengzhisu with an effective content of 150 μg / L;

[0079] (2) Selecting seeds of the rice variety Longjing 31 with full and uniform grain size, sterilizing them with 5% sodium hypochlorite by volume for 3 min, rinsing them with distilled water for 3 times, and then soaking them in distilled water;

[0080] (3) Uniform seeds were selected and placed in a 9 cm diameter culture dish and cultured with distilled water. When the seedlings grew to one leaf and one heart, nutrient solution was used to culture them until they had two leaves and one heart. Then, Fengzhisu aqueous solution was sprayed once every 12 hours for a total of 3 times. After 3 days, the plant height and fresh weight of rice were measured. The results are shown in Table 4.

[0081] Table 4 Effects of aqueous solution with Fengzhisu as active ingredient on the growth of rice Longjing 31 seedlings

[0082]

[0083] It can be seen from Table 4 that when rice is treated with Fengzhisu aqueous solution, the plant height, seedling fresh weight and root fresh weight of rice can be significantly increased, indicating that Fengzhisu aqueous solution has a significant growth-promoting effect.

[0084] Although the present invention has been disclosed as above in the form of preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the claims.

Claims

1. A plant growth regulator with fengzhisu as an active ingredient, characterized in that: The fengzhi element is anisic acid, and its weight percentage in the plant growth regulator is 0.05-20%.

2. The plant growth regulator according to claim 1, characterized in that The dosage form of the plant growth regulator is soluble powder, soluble granule, seed coating agent or aqueous solution.

3. The plant growth regulator according to claim 2, characterized in that The soluble powder is made of the following raw materials in weight percentage: 0.05-20% of Fengzhisu and 5-20% of auxiliary agent, and the balance is soluble filler; the soluble granules are made of the following raw materials in weight percentage: 0.05-20% of Fengzhisu and 5-20% of auxiliary agent, and the balance is soluble filler; the seed coating agent is made of the following raw materials in weight percentage: 0.05-20% of Fengzhisu, 2-10% of film-forming agent, 2-8% of dispersant, 0.1-2% of thickener, 0.5-2% of wetting agent and 0-5% of colorant, and the balance is water; the aqueous solution is made of the following raw materials in weight percentage: 0.05-20% of Fengzhisu and 5-20% of auxiliary agent, and the balance is water.

4. The plant growth regulator according to claim 3, characterized in that The soluble filler in the soluble powder or soluble granule is one or a mixture of two or more of sodium sulfate, sodium bicarbonate, anhydrous sodium carbonate, anhydrous calcium carbonate, potassium bicarbonate, ammonium sulfate, sodium chloride, potassium chloride, soluble starch, white carbon black and urea.

5. The plant growth regulator according to claim 3, characterized in that The auxiliary agent in the soluble powder or aqueous solution is a nonionic surfactant and / or an ionic surfactant.

6. The plant growth regulator according to claim 3, characterized in that The auxiliary agent in the soluble granules is a mixture of a surfactant, a binder and a disintegrant, wherein the mass ratio of surfactant:binder:disintegrant is 2:1:1, and the surfactant is a nonionic surfactant and / or an ionic surfactant.

7. The plant growth regulator according to claim 3, characterized in that The film-forming agent in the seed coating agent is one or a mixture of two or more of polyvinyl alcohol, polyglycerol and sodium alginate; the dispersant is one or a mixture of two or more of naphthalene sulfonate, lignin sulfonate and polycarboxylate; the thickener is one or a mixture of two or more of xanthan gum, hydroxymethyl cellulose, gelatin, seaweed, gypsum, hydroxyethyl cellulose, methyl cellulose, magnesium aluminum silicate and polyvinyl alcohol; the wetting agent is one or a mixture of two or more of polyoxyethylene alkylphenol ether, polyoxyethylene fatty alcohol ether, polyoxyethylene polyoxypropylene block copolymer, alkyl sulfate, sulfonate, fatty acid, fatty acid ester sulfate, carboxylic acid soap, phosphate and silicone non-ionic surfactant; the colorant is one or a mixture of two or more of basic fuchsin, acid fuchsin, basic violet, rose essence and acid violet.

8. The plant growth regulator according to claim 5 or 6, characterized in that The nonionic surfactant is one or a mixture of two or more of alkyl aryl polyoxyethylene ether, fatty alcohol polyoxyethylene ether and fatty acid polyoxyethylene ester; the ionic surfactant is an anionic surfactant, and the anionic surfactant is one or a mixture of two or more of alkyl benzene sulfonate, α-olefin sulfonate, alkyl sulfonate, α-sulfon monocarboxylate, fatty acid sulfonalkyl ester, succinate sulfonate, alkyl glyceryl ether sulfonate, alkyl naphthalene sulfonate, lignin sulfonate, alkyl phosphoric acid monoester and diester salts, fatty alcohol polyoxyethylene ether phosphoric acid monoester and diester salts, fatty alcohol sulfate ester salts and secondary alkyl sulfate ester salts.

9. The plant growth regulator according to claim 6, characterized in that The binder is one or a mixture of two or more of starch, xanthan gum, polyvinyl alcohol, dextrin, gum arabic, gelatin, sodium silicate, carboxymethyl cellulose, polyvinyl pyrrolidone and polyethylene glycol; the disintegrant is one or a mixture of two or more of ammonium sulfate, anhydrous sodium carbonate, sodium bicarbonate, calcium chloride, bentonite and sodium chloride.

10. Use of the plant growth regulator according to any one of claims 1 to 9 in promoting rice growth.

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