Plant growth regulator composition and preparation method thereof

Abstract

The invention discloses a plant growth regulator composition. The plant growth regulator composition is prepared from the following raw materials in percentage by weight: 40-50% of ethephon active compound, 1-2% of pimacol, 0.5-3% of wetting agent, 0.1-0.9% of penetrant and the balance of pure water. The combination of ethephon and pimacol is adopted, lodging resistance of corn can be achieved, the outstanding effect on yield increase is achieved, the high energy of corn plants can be shortened by 15-30 cm, the ear position can be reduced by 10 cm or above, the height of the corn plants is shortened, cobs and ears are uniform, bald tips are avoided, and the double-cob rate is high. The heat storage stability is high, the decomposition rate does not exceed 1% after 14 days of heat storage at 54 DEG C. After the fertilizer is applied to corn plants, the corn yield is high, the yield per mu is increased by more than 150 jin, and the lodging rate is low.

Description

Technical Field

[0001] The invention relates to a plant growth regulator composition and a preparation method thereof, and relates to C05G, in particular to the field of mixtures containing regulators. Background Art

[0002] With the gradual development of technology, the use of plant growth regulators to increase plant yields. Ethephon is a commonly used plant growth regulator. The combination of ethephon and other additives will dilute the pH of ethephon and release ethylene, which is easy to decompose after mixing. The decomposition rate reaches 100% after one month of mixing. Therefore, ethephon needs to be prepared and used immediately. Therefore, it is very important to develop a plant growth regulator containing ethephon with stable performance.

[0003] Chinese invention patent CN200910167942.8 discloses a plant growth regulator composition, which uses a plant growth regulator composition containing bud inhibitor to treat plants, which can be carried out in the seeds, seedlings or adult stages of plants, or in the medium where plants grow, to regulate plant growth, but cannot increase the yield of the product. Chinese invention patent CN201911261393.0 discloses a chitosan-coated plant growth substance sustained-release microcapsule and a preparation method thereof. The prepared chitosan-coated plant growth substance sustained-release microcapsule has good sustained-release performance and can avoid the phytotoxicity caused by excessive local concentration of plant growth substances, but it needs to be prepared into a microcapsule preparation, and the preparation process is cumbersome. Summary of the invention

[0004] In order to improve the storage stability of a plant growth regulator composition, the first aspect of the present invention provides a plant growth regulator composition, wherein the raw materials for preparing the plant growth regulator composition include, by weight percentage: 40-50% of ethephon original drug, 1-2% of sodium naphthaleneacetate, 0.5-3% of a wetting agent, 0.1-0.9% of a penetrant, and pure water supplemented to 100%.

[0005] As a preferred embodiment, the purity of the ethephon technical is 85-98wt%.

[0006] As a preferred embodiment, the purity of the ethephon technical is 90wt%.

[0007] As a preferred embodiment, the purity of the sodium naphthylacetate is 95-99wt%;

[0008] As a preferred embodiment, the purity of the sodium naphthylacetate is 98wt%; more preferably, the purity of the sodium naphthylacetate converted into naphthylacetic acid is 87wt%.

[0009] As a preferred embodiment, the weight ratio of ethephon to sodium naphthylacetate is (40-50):(1-2).

[0010] As a preferred embodiment, the weight ratio of ethephon to sodium naphthylacetate is (41-45): (1-1.5).

[0011] As a preferred embodiment, the weight ratio of ethephon to sodium naphthylacetate is 43.4:1.15.

[0012] The applicant found in the experimental process that the combination of ethephon and sodium naphthylacetate has a higher stability in drug application, is not easy to decompose after application, and has a longer duration of drug effect. The possible reason is speculated to be: the existing aminoethyl ester or brassinolide has a strong acidity after being mixed with ethephon, and the decomposition rate of aminoethyl ester or brassinolide is high, and the decomposition rate can reach 100% one month after mixing. The weight ratio of ethephon and sodium naphthylacetate of the present invention is 43.4:1.15, which can achieve the effect of a decomposition rate of no more than 1% during high-temperature storage. The possible reason is speculated to be: the combination of ethephon and sodium naphthylacetate, sodium naphthylacetate can balance the change of acidity and alkalinity after mixing and diluting with ethephon, prolong the release of ethylene in the ethylene case, avoid the decomposition of the effective agent, and adopt the preferred weight ratio, the prepared agent can be stably stored at high temperature, avoid the disadvantage of mixing with other agents and having to be prepared and used immediately, and improve the storage stability.

[0013] As a preferred embodiment, the wetting agent is selected from one or a combination of naphthalenesulfonate formaldehyde condensate, fatty alcohol polyoxyethylene ether, EO-PO block polyether, alkylphenol polyoxyethylene ether, alkylphenol polyoxyethylene ether phosphate, and fatty alcohol polyoxyethylene ether sodium sulfate.

[0014] As a preferred embodiment, the density of the EO-PO block polyether is 900-1100 kg / m 3 The dynamic viscosity of the EO-PO block polyether at 40° C. is 750-850 mPa·s.

[0015] As a preferred embodiment, the density of the EO-PO block polyether is 1000 kg / m 3 The dynamic viscosity of the EO-PO block polyether at 40° C. is 800 mPa·s.

[0016] As a preferred embodiment, the penetrant is selected from one or a combination of non-ionic penetrants or anionic penetrants.

[0017] As a preferred embodiment, the density of the non-ionic penetrant is 900-1100 kg / m 3The dynamic viscosity of the non-ionic penetrant at 23° C. is 110-150 mPa·s, and the surface tension of the non-ionic penetrant at 23° C. is 25-30 mN / m.

[0018] As a preferred embodiment, the density of the non-ionic penetrant is 1000 kg / m 3 The dynamic viscosity of the nonionic penetrant at 23° C. is 120 mPa·s, and the surface tension of the nonionic penetrant at 23° C. is 27 mN / m.

[0019] As a preferred embodiment, the non-ionic permeabilizing agent is LVS permeabilizing agent.

[0020] As a preferred embodiment, the weight ratio of the EO-PO block polyether to the LVS penetrant is (0.5-3): (0.1-0.9).

[0021] As a preferred embodiment, the weight ratio of the EO-PO block polyether to the LVS penetrant is (1-2): (0.3-0.7).

[0022] As a preferred embodiment, the weight ratio of the EO-PO block polyether to the LVS penetrant is 1:0.5.

[0023] The applicant found in the experiment that the growth regulator composition obtained by mixing the wetting agent and the penetrant in a weight ratio of (0.5-3): (0.1-0.9) has strong compatibility, high emulsion transparency, is suitable for aerial spraying, and has high control efficiency. The possible reason is that ethephon and sodium naphthaleneacetate are powdered agents, and the combination of EO-PO block polyether and LVS penetrant can improve the dissolution effect of ethephon and sodium naphthaleneacetate in water, and the formed pesticide regulator composition has clear and transparent liquid and high emulsion transparency. The applicant further found that the pesticide regulator composition adopts a spraying method, the solubility of the agent is high, and a agent with high solubility can be formed. Under the preferred weight ratio, the spray is not easy to be blocked, and the aerial spraying efficiency is high.

[0024] As a preferred embodiment, the pH of the plant growth regulator composition is 2-4.

[0025] As a preferred embodiment, the pH of the plant growth regulator composition is 2.5-3.

[0026] As a preferred embodiment, the solid content of the plant growth regulator composition is 35-45%.

[0027] As a preferred embodiment, the solid content of the plant growth regulator composition is 40%.

[0028] A second aspect of the present invention provides a method for preparing a plant growth regulator composition, comprising the following steps:

[0029] S1: Add ethephon technical into the reactor, then add pure water, start magnetic stirring, and dissolve completely;

[0030] S2 then adds sodium naphthylacetate, a wetting agent, and a penetrant and stirs continuously for 20-40 minutes;

[0031] S3 is used to obtain a clear and transparent medicine.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] (1) The plant growth regulator composition of the present invention adopts a combination of ethephon and sodium naphthylacetate, which can achieve anti-lodging effect on corn and has an outstanding effect on increasing yield. The height of corn plants can be shortened by 15-30 cm, the ear position can be reduced by more than 10 cm, the height of corn plants is shortened, the cobs and ears are uniform, no bald tips are present, and the double cob rate is high.

[0034] (2) In the plant growth regulator composition of the present invention, ethephon and sodium naphthylacetate are used in a weight ratio of 43.4:1.15. The prepared plant growth regulator composition has stable performance, is not easy to decompose after application, and has a long drug lasting effect.

[0035] (3) The plant growth regulator composition of the present invention adopts the combined effect of EO-PO block polyether and LVS penetrant, and the formed plant growth regulator composition has high stability and can achieve long-term heat storage without decomposition.

[0036] (4) The plant growth regulator composition of the present invention comprises EO-PO block polyether and LVS penetrant in a weight ratio of (0.5-3): (0.1-0.9). The formed plant growth regulator composition has strong miscibility, high emulsion transparency, is suitable for aerial spraying, and has high control efficiency.

[0037] (5) The plant growth regulator composition of the present invention has high thermal storage stability, and the decomposition rate after thermal storage at 54° C. for 14 days does not exceed 1%. After being applied to corn plants, the corn yield is high, with an increase of more than 150 catties per mu, and the lodging rate is low. DETAILED DESCRIPTION

[0038] Example 1

[0039] A plant growth regulator composition is provided. The raw materials for preparing the plant growth regulator composition include, by weight percentage, 27% of ethephon original drug, 3% of diethylaminoethyl hexanoate, 1% of a wetting agent, 0.5% of a penetrant, and pure water supplemented to 100%.

[0040] The purity of the ethephon technical is 90 wt %, and it is purchased from Hebi Quanfeng Biotechnology Co., Ltd.

[0041] The wetting agent is EO-PO block polyether, and the density of the EO-PO block polyether is 1000 kg / m 3 The EO-PO block polyether has a dynamic viscosity of 800 mPa·s at 40° C. It was purchased from Akzo Nobel and its model number is Ethylan 324.

[0042] The penetrant is an anionic penetrant, and the density of the anionic penetrant is 1000 kg / m 3 The dynamic viscosity at 23°C is 120 mPa·s, and the surface tension at 23°C is 27 mN / m. It was purchased from BASF, and the model is Emulan LVS.

[0043] A method for preparing a plant growth regulator composition comprises the following steps:

[0044] S1: Add ethephon technical into the reactor, then add pure water, start magnetic stirring, and dissolve completely;

[0045] S2 then added ammonium ethyl ester, wetting agent, and penetrant and stirred continuously for 30 min;

[0046] S3 obtains a clear and transparent medicine with a solid content of 30%.

[0047] Example 2

[0048] A plant growth regulator composition. The raw materials for preparing the plant growth regulator composition include, by weight percentage, 29.995% of ethephon original drug, 0.005% of homobrassinolide, 1% of wetting agent, 0.5% of penetrant, and pure water supplemented to 100%.

[0049] The purity of the ethephon technical is 90 wt %, and it is purchased from Hebi Quanfeng Biotechnology Co., Ltd.

[0050] The wetting agent is EO-PO block polyether, and the density of the EO-PO block polyether is 1000 kg / m 3 The EO-PO block polyether has a dynamic viscosity of 800 mPa·s at 40° C. It was purchased from Akzo Nobel and its model number is Ethylan 324.

[0051] The penetrant is an anionic penetrant, and the density of the anionic penetrant is 1000 kg / m 3 The dynamic viscosity at 23°C is 120 mPa·s, and the surface tension at 23°C is 27 mN / m. It was purchased from BASF, and the model is Emulan LVS.

[0052] A method for preparing a plant growth regulator composition comprises the following steps:

[0053] S1: Add ethephon technical into the reactor, then add pure water, start magnetic stirring, and dissolve completely;

[0054] S2 then added brassinolide, wetting agent, and penetrant and stirred continuously for 30 min;

[0055] S3 obtains a clear and transparent medicine with a solid content of 30%.

[0056] Example 3

[0057] A plant growth regulator composition. The raw materials for preparing the plant growth regulator composition include, by weight percentage, 43.4% of ethephon original drug, 1.15% of sodium naphthaleneacetate, 1% of a wetting agent, 0.5% of a penetrant, and pure water supplemented to 100%.

[0058] The purity of the ethephon technical is 90 wt %, and it is purchased from Hebi Quanfeng Biotechnology Co., Ltd.

[0059] The purity of the sodium naphthylacetate is 98 wt %, and the purity of the sodium naphthylacetate converted into naphthylacetic acid is 87 wt %, which is purchased from Henan Zhengshi Chemical Products Co., Ltd.

[0060] The wetting agent is EO-PO block polyether, and the density of the EO-PO block polyether is 1000 kg / m 3 The EO-PO block polyether has a dynamic viscosity of 800 mPa·s at 40° C. It was purchased from Akzo Nobel and its model number is Ethylan 324.

[0061] The penetrant is an anionic penetrant, and the density of the anionic penetrant is 1000 kg / m 3 The dynamic viscosity at 23°C is 120 mPa·s, and the surface tension at 23°C is 27 mN / m. It was purchased from BASF, and the model is Emulan LVS.

[0062] A method for preparing a plant growth regulator composition comprises the following steps:

[0063] S1: Add ethephon technical into the reactor, then add pure water, start magnetic stirring, and dissolve completely;

[0064] S2 then added sodium naphthylacetate, wetting agent, and penetrant and stirred continuously for 30 min;

[0065] S3 obtains a clear and transparent medicine with a solid content of 30%.

[0066] Performance Testing one,

[0068] The experiment of corn lodging control and prevention was conducted in Group 2, Liuzhuang Village, Huagong Town, Mengzhou City, Jiaozuo City, Henan Province from June to July 2022. Corn lodging has occurred seriously in the experimental area over the years.

[0069] The area of ​​the community is 666m 2 , a total of 8 plots, arranged in random blocks. Use manual spraying, the dosage of the liquid is 15 kg / mu, spray the whole plant evenly, and do not spray repeatedly. Apply the medicine when the corn is 6-9 leaves, and set up a clear water treatment as a blank control. Investigate plant growth data before applying the medicine, investigate the efficacy of the medicine 14 days after application, and collect yield and lodging rate data during the harvest period.

[0070] The test results are shown in Table 1.

[0071] Table 1

[0072] two,

[0074] Stable decomposition rate: The agents of Examples 1-3 were heat stored at 54°C for 14 days, and the decomposition rate of the agents was calculated. Decomposition rate = 100% - (agent content / initial agent content) × 100%

[0075] The test results are shown in Table 2.

[0076] In Example 1, A: diethylaminoethyl hexanoate, B: ethephon;

[0077] In Example 2, A: high brassinolide, B: ethephon;

[0078] In Example 3, A: naphthylacetic acid, B: ethephon.

[0079] Table 2

[0080]

Claims

1. A plant growth regulator composition, characterized in that The raw materials for preparing the plant growth regulator composition include, by weight percentage: 40-50% of ethephon original drug, 1-2% of sodium naphthaleneacetate, 0.5-3% of wetting agent, 0.1-0.9% of penetrant, and pure water supplemented to 100%.

2. The plant growth regulator composition according to claim 1, characterized in that: The purity of the ethephon technical is 85-98wt%.

3. The plant growth regulator composition according to claim 1, characterized in that: The purity of the sodium naphthylacetate is 95-99wt%.

4. The plant growth regulator composition according to claim 1, characterized in that: The wetting agent is selected from one or a combination of naphthalenesulfonate formaldehyde condensate, fatty alcohol polyoxyethylene ether, EO-PO block polyether, alkylphenol polyoxyethylene ether, alkylphenol polyoxyethylene ether phosphate, and fatty alcohol polyoxyethylene ether sodium sulfate.

5. The plant growth regulator composition according to claim 4, characterized in that: The density of the EO-PO block polyether is 900-1100 kg / m 3 The dynamic viscosity of the EO-PO block polyether at 40° C. is 750-850 mPa·s.

6. The plant growth regulator composition according to claim 4, characterized in that: The permeabilizer is selected from one or a combination of non-ionic permeabilizers or anionic permeabilizers.

7. The plant growth regulator composition according to claim 6, characterized in that: The density of the non-ionic penetrant is 900-1100 kg / m 3 The dynamic viscosity of the nonionic penetrant at 23° C. is 110-150 mPa·s, and the surface tension of the nonionic penetrant at 23° C. is 25-30 mN / m.

8. The plant growth regulator composition according to claim 6, characterized in that: The pH of the plant growth regulator composition is 2-4.

9. The plant growth regulator composition according to claim 6, characterized in that: The solid content of the plant growth regulator composition is 35-45%.

10. A method for preparing the plant growth regulator composition according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Add ethephon technical into the reactor, then add pure water, start magnetic stirring, and dissolve completely; S2 then adds sodium naphthylacetate, a wetting agent, and a penetrant and stirs continuously for 20-40 minutes; S3 is used to obtain a clear and transparent medicine.

Images