A plant growth regulator and its preparation method

Abstract

The present invention belongs to the technical field of plant growth regulators, relates to the technical field of classification number A01N, and specifically relates to a plant growth regulator and a preparation method thereof. A plant growth regulator, the preparation raw materials are measured by mass percentage, at least including 5-20% of gibberellin powder, 0.5-5% of penetrant, 0.001-0.1% of defoamer, 2-9% of antifreeze, 8-25% of cosolvent, and the balance is water, the gibberellin powder includes gibberellin and auxiliary agents, and the auxiliary agents include at least one of nitrogen fertilizer, phosphate fertilizer and potash fertilizer. In the technical scheme, the inventor uses gibberellin as the main effective ingredient of the plant growth regulator, and gibberellin can not only promote the growth and development of poplar and willow, but also well inhibit the flower bud development of poplar and willow, so that the flower buds are differentiated into leaf buds, and gibberellin also has the effect of thinning flowers and fruits when acting on poplar and willow, so that the differentiated flower buds fall off, thereby inhibiting the formation of flying catkins of poplar and willow.

Description

Technical Field

[0001] The present invention belongs to the technical field of plant growth regulators, relates to the technical field with classification number A01N, and specifically relates to a plant growth regulator and a preparation method thereof. Background Art

[0002] The seeds of poplar and willow trees are covered with willow catkins. Willow catkins have a low density and are easily blown away by the wind. The accumulation of willow catkins on the ground will not only pollute the environment, but may even cause a fire in serious cases. If willow catkins come into contact with people with sensitive skin, they can easily cause skin allergies or even inflammation.

[0003] Patent application number 201811460192.9 discloses a method for inhibiting tree species from producing flying catkins or flying hairs. In this method, plant growth regulators are injected into poplars and willows to inhibit poplars and willows from producing flying catkins. However, the efficacy of the growth regulator in this patent is poor and it cannot effectively inhibit the flying catkins produced by poplars and willows. Patent application number 201210001884.3 discloses a plant growth and development inhibitor and its application. The main components of the plant growth regulator in this patent include ethephon, glyphosate, sucrose, urea and ammonium bicarbonate. Although the plant growth regulator can provide plants with sufficient nutrients, it has poor stability and is not effective in inhibiting poplar and willow flying catkins.

[0004] There is an urgent need for a plant growth regulator that can effectively inhibit the formation of poplar and willow catkins and can be stably stored. Summary of the invention

[0005] In order to solve the above technical problems, the first aspect of the present invention provides a plant growth regulator, wherein the raw materials for preparing the plant growth regulator include, by mass percentage, at least 5-20% of gibberellin powder, 0.5-5% of penetrant, 0.001-0.1% of defoamer, 2-9% of antifreeze, 8-25% of cosolvent, and the balance is water, wherein the gibberellin powder includes gibberellin and auxiliary agents, and the auxiliary agents include at least one of nitrogen fertilizer, phosphate fertilizer and potash fertilizer.

[0006] As a preferred technical solution, the gibberellin is selected from at least one of gibberellin GA1, gibberellin GA3, gibberellin GA4 and gibberellin GA7.

[0007] As a preferred technical solution, the gibberellin is gibberellin GA3.

[0008] Gibberellic acid is a plant growth regulating hormone. The inventor found that when gibberellic acid is used for crops such as tomatoes, potatoes, rice, and wheat, it can promote their growth, germination, and development results. However, when used for poplars and willows, although it can promote the growth of poplars and willows, it will inhibit the development of flower buds of poplars and willows, causing the flower buds to differentiate into leaf buds. Moreover, when gibberellic acid acts on poplars and willows, it also has the effect of thinning flowers and fruits, causing the differentiated flower buds to fall off, thereby inhibiting the formation of flying catkins of poplars and willows. Especially when gibberellic acid GA3 is used, the effect of inhibiting flying catkins of poplars and willows is better. The plant growth regulator in the technical solution is applied by injecting the plant growth regulator into the main branches of the plant.

[0009] As a preferred technical solution, the auxiliary agent includes nitrogen fertilizer and phosphorus-potassium compound fertilizer, and the mass ratio between the nitrogen fertilizer and the phosphorus-potassium compound fertilizer is (1.5-2.5): (3-5).

[0010] As a preferred technical solution, the nitrogen fertilizer is selected from at least one of ammonium sulfate, ammonium bicarbonate, ammonium chloride, ammonia water and liquid ammonia.

[0011] As a preferred technical solution, the nitrogen fertilizer is ammonium sulfate.

[0012] As a preferred technical solution, the phosphorus-potassium compound fertilizer is potassium dihydrogen phosphate.

[0013] The inventor adds a certain amount of nitrogen fertilizer to gibberellin GA3, which can promote the plant growth and development of poplar and willow, and the leaves are dark green, and can work synergistically with gibberellin to inhibit flower bud differentiation, promote flower bud shedding, and when nitrogen fertilizer is selected from ammonium sulfate, poplar and willow can be directly and quickly absorbed, but too much nitrogen fertilizer will affect the absorption of elements such as calcium, magnesium and potassium and gibberellin GA3 by plants, and too little nitrogen fertilizer can not achieve the effect of promoting plant growth well. The inventor finds that by compounding nitrogen fertilizer with certain phosphorus-potassium compound fertilizer, the overall component of plant growth regulator can not only promote the growth of plants well, but also better inhibit flower bud differentiation, reduce the generation of poplar and willow catkins, and also do not have inhibitory effect on elements such as calcium, magnesium and potassium. However, gibberellin GA3 has poor permeability in plants, causes uneven transportation of gibberellin GA3 in plants, and uneven inhibition effect on various parts in plants and poor solubility of gibberellin GA3 in aqueous solution, and gibberellin GA3 has strong acid-base sensitivity when used, and has poor applicability for different use environments. Moreover, as the degree of inhibition of the plant's flower buds increases, the plant's resistance gradually decreases, which is mainly reflected in its poor ability to resist diseases and pests, as well as drought and cold.

[0014] As a preferred technical solution, the gibberellin powder also includes a pH regulator and sugars.

[0015] As a preferred technical solution, the pH regulator is selected from at least one of ammonium salts, acetic acid and its salts, and citric acid and its salts.

[0016] As a preferred technical solution, the pH regulator is sodium citrate dihydrate.

[0017] As a preferred technical solution, the mass ratio of the gibberellin to sodium citrate dihydrate is (1.8-2.2): (1.7-2.1).

[0018] The inventors found that by adding a certain amount of sodium citrate dihydrate, not only can the adaptability of gibberellin GA3 to acid-base environment be improved, but also the solubility of gibberellin GA3 in water can be improved. In particular, when the mass ratio of gibberellin GA3 to sodium citrate dihydrate is 2:1.9, the best effect is achieved.

[0019] As a preferred technical solution, the sugar is selected from at least one of monosaccharides, disaccharides and polysaccharides.

[0020] As a preferred technical solution, the carbohydrate is a monosaccharide, and the monosaccharide is glucose monohydrate.

[0021] The inventors found that by adding a certain amount of monohydrate glucose to gibberellin GA3, not only can the drought resistance, cold resistance and resistance to diseases and insect pests of the plants be improved, but also the wettability of the plant growth regulator at the injection site of the plants can be promoted, and the absorption effect of the plant growth regulator by poplars and willows can be improved, so that the gibberellin GA3 can inhibit the flying catkins of the whole plant. Monohydrate glucose, as a monosaccharide substance, can be directly absorbed and utilized by plants, promote the growth and development of plants and make plants stronger, and monohydrate glucose contains more hydroxyl groups, which is easy to absorb moisture at the injection site, so that the injection site is kept moist, and promotes the long-term absorption of the plant growth regulator by the plant.

[0022] As a preferred technical solution, the co-solvent is selected from at least one of alcohols, ethers and alcohol ethers.

[0023] As a preferred technical solution, the co-solvent is an alcohol, and the alcohol is selected from at least one of a monohydric alcohol, a dihydric alcohol and a trihydric alcohol.

[0024] As a preferred technical solution, the co-solvent is a monohydric alcohol, and the monohydric alcohol is methanol.

[0025] In order to improve the solubility of gibberellin GA3 in water, the inventor added a certain amount of methanol to the plant growth regulator. The inventor found that methanol can not only improve the solubility of gibberellin GA3, but also have a synergistic effect with gibberellin GA3, making the branches and leaves of the plants more tender, vigorous and luxuriant, and can improve the drought resistance of the plants to a certain extent.

[0026] As a preferred technical solution, the penetrant is selected from one of fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, fatty acid polyoxyethylene ester, polyoxyethylene alkylamine, polyoxyethylene alkylolamide, carboxylates, sulfonates, sulfates and phosphates.

[0027] As a preferred technical solution, the penetrant is a mixture of fatty alcohol polyoxyethylene ether and sulfonates, and the mass ratio of the fatty alcohol polyoxyethylene ether and the sulfonates is (3-7): (1-3).

[0028] As a preferred technical solution, the fatty alcohol polyoxyethylene ether is isomeric tridecanol polyoxyethylene ether.

[0029] As a preferred technical solution, the addition number of ethylene oxide in the isomeric tridecanol polyoxyethylene ether can be one of 3, 5, 6, 7, 8, 10 and 12.

[0030] As a preferred technical solution, the addition number of ethylene oxide in the isomeric tridecanol polyoxyethylene ether is 8, specifically isomeric tridecanol polyoxyethylene ether TO8.

[0031] As a preferred technical solution, the sulfonate is selected from at least one of alkylbenzene sulfonate, α-olefin sulfonate, alkyl sulfonate, α-sulfomonocarboxylate, fatty acid sulfonalkyl ester, succinate sulfonate, alkylnaphthalene sulfonate, petroleum sulfonate, lignin sulfonate and alkyl glyceryl ether sulfonate.

[0032] As a preferred technical solution, the succinate ester sulfonate is succinic acid monoester sulfonate and / or succinic acid diester sulfonate.

[0033] As a preferred technical solution, the succinic acid diester sulfonate is sodium diisooctyl sulfosuccinate.

[0034] As a preferred technical solution, the sulfonate is sodium diisooctyl sulfosuccinate.

[0035] In order to improve the permeability of plant growth regulators, the inventors added a certain amount of sodium diisooctyl sulfosuccinate to gibberellin powder. The inventors found that sodium diisooctyl sulfosuccinate can better improve the solubility and stability of gibberellin GA3 in water, improve the penetration effect of plant growth regulators, make the plant growth regulators moisten the application sites of poplars and willows, and make the plant growth regulators quickly penetrate into the interior of the plants, so that the plant growth regulators can be smoothly transported to each branch of the plant through the conduit inside the plant, and then transported to various places through the conduit in the branch part or by cell membrane transfer. The inventors found that the plant growth regulator can be transported well from the plant application site to the branch part of the plant, but when it is transported from the branch part to the smaller branch bud, the transportation effect is poor. The inventor believes that the possible reason is that when the plant growth regulator is transported from the application site to each branch, it is transported in the plant body through the main trunk duct. Since the cavity of the main trunk duct is larger, the plant growth regulator is transported more smoothly in the main trunk duct. However, when it is transported from the branch to the smaller branch bud, it is transported by a smaller duct or through the cell membrane. Sodium diisooctyl sulfosuccinate has a larger viscosity, which increases the viscosity of the plant growth regulator and weakens the transfer efficiency of the plant growth regulator between cell membranes. In addition, the inventor found that sodium diisooctyl sulfosuccinate can reduce the high temperature resistance of the plant growth regulator. When the plant growth regulator is used at a higher temperature, it has a lower efficacy and reduces the high temperature stability of the plant growth regulator during storage. The inventor unexpectedly discovered that when isomeric tridecanol polyoxyethylene ether is added to a plant growth regulator, especially when the addition number of ethylene oxide in the isomeric tridecanol polyoxyethylene ether is 8, the plant growth regulator can not only have good permeability and transportability in the plant as a whole, but also further improve the solubility of gibberellin GA3, and improve the high temperature stability of the overall plant growth regulator. However, when the addition number of ethylene oxide in the isomeric tridecanol polyoxyethylene ether is too small, the high temperature resistance of the plant growth regulator is not well improved, and when the addition number of ethylene oxide in the isomeric tridecanol polyoxyethylene ether is too large, the solubility of gibberellin GA3 in water is reduced. The inventor believes that the possible reason is that the hydrophilic group in sodium diisooctyl sulfonate succinate has a small force on water. When the temperature rises, the movement intensity of water molecules and other molecules is intense, and the hydrophilic group in sodium diisooctyl sulfonate succinate is separated from the water molecules. When the temperature is high, the collision probability between the sodium diisooctyl sulfonate micelles increases, causing the sodium diisooctyl sulfonate micelles to aggregate with each other, resulting in sedimentation, thereby reducing the high temperature stability of the plant growth regulator. The isomeric tridecanol polyoxyethylene ether has good high temperature resistance, and the isomeric tridecanol polyoxyethylene ether micelles can be interspersed between the sodium diisooctyl sulfonate micelles, thereby reducing the aggregation between the sodium diisooctyl sulfonate micelles, reducing the sedimentation phenomenon, and improving the high temperature stability.The isomeric tridecanol polyoxyethylene ether has fewer side chains and less steric hindrance, which allows it to be transferred more smoothly between cell membranes, so that the plant growth regulator can be evenly and smoothly transported to various parts of the plant. In addition, the addition of isomeric tridecanol polyoxyethylene ether can also improve the dilution stability of the plant growth regulator. The plant growth regulator still has good stability when diluted to 20 times with hard water, and there will be no turbidity or precipitation. However, due to the addition of the penetrant, the plant growth regulator is prone to more foam during storage, transportation and use.

[0036] As a preferred technical solution, the defoaming agent is alcohol and / or silicone.

[0037] As a preferred technical solution, the defoaming agent is a silicone defoaming agent.

[0038] The inventors found that by adding a certain amount of silicone defoaming agent, not only can the foaming phenomenon of plant growth regulators be well suppressed, but also the high temperature resistance of the overall plant growth regulator can be improved. However, the low temperature stability of plant growth regulators is poor. When the temperature is low, the plant growth regulator will appear crystallized and turbid, which reduces the usability of the plant growth regulator.

[0039] As a preferred technical solution, the antifreeze agent is an alcohol, and the carbon chain length of the alcohol is C2-C8.

[0040] As a preferred technical solution, the antifreeze agent is 1,2-propylene glycol.

[0041] The second aspect of the present invention provides a method for preparing the plant growth regulator, which at least comprises the steps of:

[0042] (1) adding water and gibberellin powder into a mixing and stirring kettle, and stirring to obtain a mixture A;

[0043] (2) Add a cosolvent, an antifreeze agent, a penetrant and a defoamer to the mixture A, stir and filter to obtain a product.

[0044] Beneficial effects:

[0045] In the technical solution, the inventor uses gibberellin as the main active ingredient of the plant growth regulator. The gibberellin can not only promote the growth and development of poplars and willows, but also effectively inhibit the development of flower buds of poplars and willows, causing the flower buds to differentiate into leaf buds. When acting on poplars and willows, gibberellin also has the effect of thinning flowers and fruits, causing the differentiated flower buds to fall off, thereby inhibiting the formation of flying catkins of poplars and willows. In addition, in the technical solution, the inventor promotes the penetration effect and rate of the plant growth regulator on the plant body by adding a penetrant, thereby improving the absorption and utilization of the plant growth regulator by the plant, and thus improving the inhibitory effect and stability on flying catkins of poplars and willows. DETAILED DESCRIPTION

[0046] Example 1

[0047] In order to solve the above technical problems, the first aspect of this embodiment provides a plant growth regulator, wherein the raw materials for preparation are calculated by mass percentage, including 5% gibberellin powder, 0.5% penetrant, 0.001% defoamer, 2% antifreeze, 8% cosolvent, and the balance is deionized water, wherein the gibberellin powder includes gibberellin GA3, sodium citrate dihydrate, ammonium sulfate, potassium dihydrogen phosphate, and glucose monohydrate, and the mass ratio of the gibberellin GA3, sodium citrate dihydrate, ammonium sulfate, potassium dihydrogen phosphate, and glucose monohydrate is 2:1.9:1.9:4:0.2. The gibberellin GA3 is purchased from Shanghai Yongye Biotechnology Co., Ltd. The cosolvent is an alcohol, the alcohol is a monohydric alcohol, and the monohydric alcohol is methanol. The penetrant is a mixture of fatty alcohol polyoxyethylene ether and sulfonate, and the mass ratio of the fatty alcohol polyoxyethylene ether and sulfonate is 5:2. The fatty alcohol polyoxyethylene ether is isomeric tridecanol polyoxyethylene ether, the addition number of ethylene oxide in the isomeric tridecanol polyoxyethylene ether is 8, specifically isomeric tridecanol polyoxyethylene ether TO8, and the brand of the isomeric tridecanol polyoxyethylene ether TO8 is: Lutensol TO8. The sulfonate is sodium dioctyl sulfosuccinate, the defoamer is an organosilicon defoamer, and the brand of the organosilicon defoamer is: Foamex 810. The antifreeze agent is 1,2-propylene glycol.

[0048] The second aspect of this embodiment provides a method for preparing the plant growth regulator, comprising the steps of:

[0049] (1) adding deionized water and gibberellin powder into a mixing stirred tank, stirring at 1000 r / min for 30 min, and stirring to obtain a mixture A;

[0050] (2) Methanol and 1,2-propylene glycol were added to the mixture A, and the mixture was stirred at 1500 r / min for 10 min. Then, isomeric tridecanol polyoxyethylene ether, sodium diisooctyl sulfosuccinate and a silicone defoamer were added, and the mixture was stirred at 1500 r / min for 10 min. The mixture was filtered through a 300-mesh filter bag and packaged to obtain the product.

[0051] Example 2

[0052] In order to solve the above technical problems, the first aspect of this embodiment provides a plant growth regulator, wherein the raw materials for preparation are calculated by mass percentage, including 10% gibberellin powder, 0.7% penetrant, 0.002% defoamer, 4.5% antifreeze, 10% cosolvent, and the balance is deionized water, wherein the gibberellin powder includes gibberellin GA3, sodium citrate dihydrate, ammonium sulfate, potassium dihydrogen phosphate, and glucose monohydrate, and the mass ratio of the gibberellin GA3, sodium citrate dihydrate, ammonium sulfate, potassium dihydrogen phosphate, and glucose monohydrate is 2:1.9:1.9:4:0.2. The gibberellin GA3 is purchased from Shanghai Yongye Biotechnology Co., Ltd. The cosolvent is an alcohol, the alcohol is a monohydric alcohol, and the monohydric alcohol is methanol. The penetrant is a mixture of fatty alcohol polyoxyethylene ether and sulfonate, and the mass ratio of the fatty alcohol polyoxyethylene ether and sulfonate is 5:2. The fatty alcohol polyoxyethylene ether is isomeric tridecanol polyoxyethylene ether, the addition number of ethylene oxide in the isomeric tridecanol polyoxyethylene ether is 8, specifically isomeric tridecanol polyoxyethylene ether TO8, and the brand of the isomeric tridecanol polyoxyethylene ether TO8 is: Lutensol TO8. The sulfonate is sodium dioctyl sulfosuccinate, the defoamer is an organosilicon defoamer, and the brand of the organosilicon defoamer is: Foamex 810. The antifreeze agent is 1,2-propylene glycol.

[0053] The second aspect of this embodiment provides a method for preparing the plant growth regulator, comprising the steps of:

[0054] (1) adding deionized water and gibberellin powder into a mixing stirred tank, stirring at 1000 r / min for 30 min, and stirring to obtain a mixture A;

[0055] (2) Methanol and 1,2-propylene glycol were added to the mixture A, and the mixture was stirred at 1500 r / min for 10 min. Then, isomeric tridecanol polyoxyethylene ether, sodium diisooctyl sulfosuccinate and a silicone defoamer were added, and the mixture was stirred at 1500 r / min for 10 min. The mixture was filtered through a 300-mesh filter bag and packaged to obtain the product.

[0056] Example 3

[0057] In order to solve the above technical problems, the first aspect of this embodiment provides a plant growth regulator, wherein the raw materials for preparation are calculated by mass percentage, including 20% ​​gibberellin powder, 5% penetrant, 0.1% defoamer, 9% antifreeze, 25% cosolvent, and the balance is deionized water, wherein the gibberellin powder includes gibberellin GA3, sodium citrate dihydrate, ammonium sulfate, potassium dihydrogen phosphate, and glucose monohydrate, and the mass ratio of the gibberellin GA3, sodium citrate dihydrate, ammonium sulfate, potassium dihydrogen phosphate, and glucose monohydrate is 2:1.9:1.9:4:0.2. The gibberellin GA3 is purchased from Shanghai Yongye Biotechnology Co., Ltd. The cosolvent is an alcohol, the alcohol is a monohydric alcohol, and the monohydric alcohol is methanol. The penetrant is a mixture of fatty alcohol polyoxyethylene ether and sulfonate, and the mass ratio of the fatty alcohol polyoxyethylene ether and sulfonate is 5:2. The fatty alcohol polyoxyethylene ether is isomeric tridecanol polyoxyethylene ether, the addition number of ethylene oxide in the isomeric tridecanol polyoxyethylene ether is 8, specifically isomeric tridecanol polyoxyethylene ether TO8, and the brand of the isomeric tridecanol polyoxyethylene ether TO8 is: Lutensol TO8. The sulfonate is sodium dioctyl sulfosuccinate, the defoamer is an organosilicon defoamer, and the brand of the organosilicon defoamer is: Foamex 810. The antifreeze agent is 1,2-propylene glycol.

[0058] The second aspect of this embodiment provides a method for preparing the plant growth regulator, comprising the steps of:

[0059] (1) adding deionized water and gibberellin powder into a mixing stirred tank, stirring at 1000 r / min for 30 min, and stirring to obtain a mixture A;

[0060] (2) Methanol and 1,2-propylene glycol were added to the mixture A, and the mixture was stirred at 1500 r / min for 10 min. Then, isomeric tridecanol polyoxyethylene ether, sodium diisooctyl sulfosuccinate and a silicone defoamer were added, and the mixture was stirred at 1500 r / min for 10 min. The mixture was filtered through a 300-mesh filter bag and packaged to obtain the product.

[0061] Example 4

[0062] In order to solve the above technical problems, the first aspect of this embodiment provides a plant growth regulator, wherein the raw materials for preparation are calculated by mass percentage, including 10% gibberellin powder, 0.7% penetrant, 0.002% defoamer, 4.5% antifreeze, 10% cosolvent, and the balance is deionized water, wherein the gibberellin powder includes gibberellin GA3, sodium citrate dihydrate, ammonium sulfate, potassium dihydrogen phosphate, and glucose monohydrate, and the mass ratio of the gibberellin GA3, sodium citrate dihydrate, ammonium sulfate, potassium dihydrogen phosphate, and glucose monohydrate is 2:1.9:1.9:4:0.2. The gibberellin GA3 is purchased from Shanghai Yongye Biotechnology Co., Ltd. The cosolvent is an alcohol, the alcohol is a monohydric alcohol, and the monohydric alcohol is methanol. The penetrant is a sulfonate, the sulfonate is sodium dioctyl sulfosuccinate, the defoamer is an organosilicon defoamer, and the brand of the organosilicon defoamer is Foamex 810. The antifreeze agent is 1,2-propylene glycol.

[0063] The second aspect of this embodiment provides a method for preparing the plant growth regulator, comprising the steps of:

[0064] (1) adding deionized water and gibberellin powder into a mixing stirred tank, stirring at 1000 r / min for 30 min, and stirring to obtain a mixture A;

[0065] (2) Methanol and 1,2-propylene glycol were added to the mixture A, and the mixture was stirred at 1500 r / min for 10 min. Then, sodium diisooctyl sulfosuccinate and an organosilicon defoamer were added, and the mixture was stirred at 1500 r / min for 10 min. The mixture was filtered through a 300-mesh filter bag and packaged to obtain the product.

[0066] Example 5

[0067] In order to solve the above technical problems, the first aspect of this embodiment provides a plant growth regulator, wherein the raw materials for preparation are calculated by mass percentage, including 10% gibberellin powder, 0.7% penetrant, 0.002% defoamer, 4.5% antifreeze, 10% cosolvent, and the balance is deionized water, wherein the gibberellin powder includes gibberellin GA3, sodium citrate dihydrate, ammonium sulfate, potassium dihydrogen phosphate, and glucose monohydrate, and the mass ratio of the gibberellin GA3, sodium citrate dihydrate, ammonium sulfate, potassium dihydrogen phosphate, and glucose monohydrate is 2:1.9:1.9:4:0.2. The gibberellin GA3 is purchased from Shanghai Yongye Biotechnology Co., Ltd. The cosolvent is an alcohol, the alcohol is a monohydric alcohol, and the monohydric alcohol is methanol. The penetrant is a mixture of fatty alcohol polyoxyethylene ether and sulfonate, and the mass ratio of the fatty alcohol polyoxyethylene ether and sulfonate is 5:2. The fatty alcohol polyoxyethylene ether is isomeric tridecanol polyoxyethylene ether, the addition number of ethylene oxide in the isomeric tridecanol polyoxyethylene ether is 8, specifically isomeric tridecanol polyoxyethylene ether TO6, the brand of the isomeric tridecanol polyoxyethylene ether TO6 is: Lutensol TO6. The sulfonate is sodium dioctyl sulfosuccinate, the defoamer is an organosilicon defoamer, the brand of the organosilicon defoamer is: Foamex 810. The antifreeze is 1,2-propylene glycol.

[0068] The second aspect of this embodiment provides a method for preparing the plant growth regulator, comprising the steps of:

[0069] (1) adding deionized water and gibberellin powder into a mixing stirred tank, stirring at 1000 r / min for 30 min, and stirring to obtain a mixture A;

[0070] (2) Methanol and 1,2-propylene glycol were added to the mixture A, and the mixture was stirred at 1500 r / min for 10 min. Then, isomeric tridecanol polyoxyethylene ether, sodium diisooctyl sulfosuccinate and a silicone defoamer were added, and the mixture was stirred at 1500 r / min for 10 min. The mixture was filtered through a 300-mesh filter bag and packaged to obtain the product.

[0071] Example 6

[0072] In order to solve the above technical problems, the first aspect of this embodiment provides a plant growth regulator, wherein the raw materials for preparation are calculated by mass percentage, including 10% gibberellin powder, 0.7% penetrant, 0.002% defoamer, 4.5% antifreeze, 10% cosolvent, and the balance is deionized water, wherein the gibberellin powder includes gibberellin GA3, sodium citrate dihydrate, ammonium sulfate, potassium dihydrogen phosphate, and glucose monohydrate, and the mass ratio of the gibberellin GA3, sodium citrate dihydrate, ammonium sulfate, potassium dihydrogen phosphate, and glucose monohydrate is 2:1.9:1.9:4:0.2. The gibberellin GA3 is purchased from Shanghai Yongye Biotechnology Co., Ltd. The cosolvent is an alcohol, the alcohol is a monohydric alcohol, and the monohydric alcohol is methanol. The penetrant is a mixture of lauroyl diethanolamine and sulfonates, and the mass ratio of the lauroyl diethanolamine and sulfonates is 5:2. The sulfonate is sodium dioctyl sulfosuccinate, the defoamer is an organosilicon defoamer, and the brand of the organosilicon defoamer is Foamex 810. The antifreeze is 1,2-propylene glycol.

[0073] The second aspect of this embodiment provides a method for preparing the plant growth regulator, comprising the steps of:

[0074] (1) adding deionized water and gibberellin powder into a mixing stirred tank, stirring at 1000 r / min for 30 min, and stirring to obtain a mixture A;

[0075] (2) Methanol and 1,2-propylene glycol were added to the mixture A, and the mixture was stirred at 1500 r / min for 10 min. Then, lauryl diethanolamine, sodium diisooctyl sulfosuccinate and an organosilicon defoaming agent were added, and the mixture was stirred at 1500 r / min for 10 min. The mixture was filtered through a 300-mesh filter bag and packaged to obtain the product.

[0076] Performance Testing

[0077] Performance test 1:

[0078] High temperature stability: 50 mL of the plant growth regulator obtained in Examples 1-6 were respectively measured and poured into beakers, and then the beakers were placed in an oven, and the oven temperature was set to 55° C. After 14 days, it was taken out to observe whether stratification, precipitation, or whether the color of the plant growth regulator became darker. If stratification, precipitation, or darkening of color occurred, the high temperature stability was recorded as unqualified. If the plant growth regulator did not change, the high temperature stability was recorded as qualified.

[0079] Low temperature stability: 50 mL of the plant growth regulators obtained in Examples 1-6 were respectively measured and poured into beakers, and then the beakers were placed in a refrigerator, and the refrigerator temperature was set to -2°C. After 14 days, the beakers were taken out to observe whether crystallization or turbidity occurred. If crystallization or turbidity occurred, the low temperature stability was recorded as unqualified. If the plant growth regulator did not change, the low temperature stability was recorded as qualified.

[0080] Performance Test 2:

[0081] Dilution stability: 5 mL of the plant growth regulator obtained in Examples 1-6 was respectively measured and poured into 100 mL of standard hard water to observe whether precipitation would occur upon dilution. If precipitation occurred, the dilution stability was recorded as unqualified; if no change occurred, the dilution stability was recorded as qualified.

[0082] Performance Test 3:

[0083] Persistent foaming property: 100 ml of the plant growth regulators in Examples 1-6 were respectively taken into different 200 ml volumetric flasks with scales, the volumetric flasks were sealed, and the flasks were turned upside down 180° 20 times, and the foaming condition was observed. If a certain amount of foam was generated, the foaming property was recorded as unqualified, and if no foam was generated, the foaming property was recorded as qualified.

[0084]

[0085]

[0086] Performance Test 4:

[0087] Plant Growth Regulator Effectiveness Test:

[0088] Test time: May 15, 2018;

[0089] Test location: along the coast of Yuyao City and Zhongshan River in Ningbo City, Zhejiang Province;

[0090] The test agent used: a plant growth regulator prepared by compounding the raw materials according to the ratio in Example 3;

[0091] Test plants: along the Nanbinjiang Road: 68 willow trees with a breast diameter of 15-50 cm were selected, of which 58 willow trees were injected with the plant growth regulator in Example 3 in May 2018, and 10 willow trees were not injected with the plant growth regulator in Example 3; along the Zhongshan River: 105 poplar trees with a breast diameter of 25-60 cm were selected, of which 95 poplar trees were injected with the plant growth regulator in Example 3 in May 2018, and 10 poplar trees were not injected with the plant growth regulator in Example 3;

[0092] Test method: Along the Nanbinjiang Road: According to the size of the diameter at breast height, 58 willow trees were injected with the corresponding dose of the plant growth regulator in Example 3, and another 10 trees were used for reference and comparison, and were registered: numbered A1, A2, A3, ... A58, C1, C2, ... CK10; Along the Zhongshan River: According to the size of the diameter at breast height, 95 poplar trees were injected with the corresponding dose of the plant growth regulator in Example 3, and another 10 trees were used for reference and comparison, and were registered: numbered B1, B2, B3, ... B95, CK1, CK2, ... CK10;

[0093] Effect acceptance: On May 8, 2019, we went to the bank of Nanbinjiang Road in Yuyao City to accept the effect of anti-flocculation liquid injection. The acceptance found that the 58 injected willow trees had 97% less catkins than the 10 control trees. The test method for the percentage of catkin reduction was: a 20cm*20cm iron ring was randomly thrown under the tree area of ​​each injected willow tree. Each willow tree was thrown 30 times. Each time, the percentage of the area of ​​catkins in the iron ring to the area of ​​the iron ring was calculated as the percentage of catkins produced. The final calculation was The average percentage of catkins production of the 58 injected willow trees was calculated. A 20cm*20cm iron ring was randomly dropped under the tree of each control willow tree. Each control willow tree was dropped 30 times. The percentage of the area of ​​catkins in the iron ring to the area of ​​the iron ring was calculated each time as the percentage of the control catkins production. Finally, the average percentage of catkins production of the 10 control willow trees was calculated. The average percentage of catkins production of the control willow trees minus the average percentage of catkins production of the injected willow trees was the percentage of catkin reduction.

[0094] On May 20, we went to the banks of Zhongshan River to inspect the effect of poplar anti-flocculant injection. The inspection found that the 95 injected poplars had 96% less fluff than the 10 control poplars. The test method for the reduction of poplar fluff was the same as that for willow fluff. This proved that the plant growth regulator in Example 3 had a good control effect on reducing flying fluff and played a positive role in improving the ecological environment.

Claims

1. A plant growth regulator, characterized in that The raw materials for preparation include at least 5-20% of gibberellin powder, 0.5-5% of penetrant, 0.001-0.1% of defoamer, 2-9% of antifreeze, 8-25% of cosolvent, and the balance of water, calculated by mass percentage; The gibberellin powder includes gibberellin and auxiliary agents. The auxiliary agent includes nitrogen fertilizer and phosphorus-potassium compound fertilizer, and the mass ratio of the nitrogen fertilizer to the phosphorus-potassium compound fertilizer is (1.5-2.5): (3-5); The gibberellin is gibberellin GA3; The nitrogen fertilizer is ammonium sulfate; The phosphorus-potassium compound fertilizer is potassium dihydrogen phosphate; The gibberellin powder also includes a pH regulator and sugars; The pH regulator is sodium citrate dihydrate, and the mass ratio of the gibberellin to sodium citrate dihydrate is (1.8-2.2): (1.7-2.1); The penetrant is a mixture of fatty alcohol polyoxyethylene ether and sulfonates, and the mass ratio of the fatty alcohol polyoxyethylene ether and sulfonates is (3-7): (1-3); The sulfonate is sodium diisooctyl sulfosuccinate; The fatty alcohol polyoxyethylene ether is isomeric tridecanol polyoxyethylene ether, the addition number of ethylene oxide in the isomeric tridecanol polyoxyethylene ether is 8, specifically isomeric tridecanol polyoxyethylene ether TO8.

2. The plant growth regulator according to claim 1, characterized in that The defoaming agent is alcohol and / or silicone.

3. The plant growth regulator according to claim 1, characterized in that The antifreeze agent is an alcohol, and the carbon chain length of the alcohol is C2-C8.

4. The plant growth regulator according to any one of claims 1 to 3, characterized in that The co-solvent is selected from at least one of alcohols, ethers and alcohol ethers.

5. A method for preparing a plant growth regulator according to any one of claims 1 to 4, characterized in that: At least the steps include: (1) adding water and gibberellin powder into a mixing and stirring tank, and stirring to obtain a mixture A; (2) Add a solvent, an antifreeze agent, a penetrant and a defoamer to the mixture A, stir and filter to obtain a product.

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