Agricultural pesticide residue reducing agent as well as preparation method and application thereof

Abstract

The invention discloses an agricultural pesticide residue reducing agent as well as a preparation method and application thereof. Every 1kg of the agricultural pesticide residue reducing agent comprises the following components: 100-200g of composite sodium chlorate, 200-300g of composite sodium hydrogen sulfate, 18-22g of citric acid, 3-7g of calcium and the balance of water. The preparation method of the agricultural pesticide residue reducing agent comprises the following operation steps: S1, dissolving the composite sodium chlorate with water, mixing with the calcium, and heating to 30-40 DEG C; s2, then adding composite sodium hydrogen sulfate dissolved by water, and heating to 45-60 DEG C; and S3, finally adding citric acid, stirring and mixing, supplementing water to 1 kg, and fully dissolving for 1-2 hours to obtain the agricultural pesticide residue reducing agent. The obtained agricultural pesticide residue reducing agent can rapidly and effectively reduce the pesticide residues on the surfaces of fruits and vegetables in different periods, and is more efficient, safer, environmentally friendly and low in toxic and side effects during use.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural pesticide residue reducers, in particular to an agricultural pesticide residue reducer and a preparation method and application thereof. Background Art

[0002] There are many types of pesticides. Pesticides used for crop spraying include insecticides, fungicides, herbicides, miticides and plant growth regulators. The specific raw materials used in these agents include chlorantraniliprole, clothianidin, carbendazim, fomesafen, thiamethoxam, etc. They are indispensable and important tools in agricultural production, used to prevent and control pests and diseases, regulate plant growth, etc. However, the use of these agents has certain risks, which may pollute the soil, water and air, and have certain toxic side effects.

[0003] Therefore, the development of green, efficient and safe agricultural pesticide residue reducers for use in agricultural plant growth is of great significance for reducing their value loss and protecting the environment. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an agricultural pesticide residue reducer and a preparation method and application thereof, so that the prepared agricultural pesticide residue reducer can quickly and effectively reduce the surface pesticide residues of fruits and vegetables at different periods, and the use is more efficient, safe, environmentally friendly and has low toxic side effects.

[0005] The present invention solves the above technical problems with the following technical solutions:

[0006] The invention discloses an agricultural pesticide residue reducer, wherein each kilogram of the agricultural pesticide residue reducer contains the following components: 100-200 g of composite sodium chlorate, 200-300 g of composite sodium hydrogen sulfate, 18-22 g of citric acid and 3-7 g of calcium, and the balance is water;

[0007] The preparation method of the agricultural pesticide residue reducing agent of the present invention comprises the following steps:

[0008] S1. Dissolve the composite sodium chlorate in water and mix with calcium and heat to 30-40 degrees;

[0009] S2, then add the composite sodium bisulfate dissolved in water and heat to 45-60 degrees;

[0010] S3. Finally, add citric acid, stir and mix, and then add water to 1 kg and allow it to fully dissolve for 1-2 hours to obtain the agricultural pesticide residue reducer.

[0011] In steps S1 and S2 of the present invention, the amount of water used to dissolve the composite sodium chlorate and the composite sodium bisulfate is preferably sufficient to achieve dissolution.

[0012] Application of the agricultural pesticide residue reducer of the present invention: after diluting the agricultural pesticide residue reducer with water by 100-1000 times, it is used for degrading pesticides in fruits and vegetables at different stages.

[0013] The present invention has the following advantages:

[0014] (1) The agricultural pesticide residue reducer obtained by the present invention can quickly reduce the amount of pesticide residues on the surface of fruits and vegetables at different times, and is more efficient, safe, environmentally friendly and has low toxic side effects when used.

[0015] (2) The agricultural pesticide residue reducer obtained by the present invention has the advantages of being environmentally friendly and easy to operate, and can be easily and quickly dissolved in agricultural spraying water to remove pesticide residues.

[0016] (3) The agricultural pesticide residue reducer prepared by the present invention can be used in a wide range of dosage adjustments. During the test, the agent was diluted and added to an aqueous solution containing pesticides to degrade the pesticides. After 24 hours of degradation, the pesticide residues were reduced from 100% to 0.1%-62.2%. The pesticide residue reducer is water-soluble, can be decomposed in the soil, and is safe to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The agricultural pesticide residue remover of Example 1 of the present invention was used to degrade a 50 mg / L chlorantraniliprole aqueous solution. A gas chromatographic image was obtained after 24 hours of degradation. The retention time of the effective peak was 12.8 min. According to the area normalization method, the pesticide residue was reduced from 100% to 0.1%;

[0018] Figure 2 The agricultural pesticide residue remover of Example 2 of the present invention was used to degrade a 50 mg / L clothianidin aqueous solution. A gas chromatographic image was obtained after 24 hours of degradation. The retention time of the effective peak was 4.1 min. According to the area normalization method, the pesticide residue was reduced from 100% to 62.2%;

[0019] Figure 3 The agricultural pesticide residue remover of Example 3 of the present invention was used to degrade a 50 mg / L thiamethoxam aqueous solution. A gas chromatographic image was obtained after 24 hours of degradation. The retention time of the effective peak was 11.4 min. According to the area normalization method, the pesticide residue was reduced from 100% to 55.5%. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below in conjunction with embodiments:

[0021] Example 1

[0022] The agricultural pesticide residue reducer of the present invention contains the following components in every 1 kg of the agricultural pesticide residue reducer: 100 g of composite sodium chlorate, 200 g of composite sodium hydrogen sulfate, 18 g of citric acid and 3 g of calcium, and the balance is water.

[0023] The preparation method of the above agricultural pesticide residue reducer comprises the following steps:

[0024] S1. Dissolve 100g of composite sodium chlorate in 300g of water, mix with 3g of calcium and heat to 30 degrees;

[0025] S2. Dissolve 200 g of composite sodium bisulfate in 400 g of water and add it to the mixture of step S1, and heat it to 45 degrees; S3. Finally, add 18 g of citric acid, stir and mix, and then add water to 1 kg and allow it to fully dissolve for 1 hour to obtain an agricultural pesticide residue reducer.

[0026] When used, the obtained agricultural pesticide residue reducer is diluted 100 times with water and used for pesticide removal. Taking 50 mg / L chlorfenapyr aqueous solution as an example, the pesticide residue rate can be reduced from 100% to 0.1%. Figure 1 shown.

[0027] Example 2

[0028] The agricultural pesticide residue reducer of the present invention contains the following components in every 1 kg of the agricultural pesticide residue reducer: 200 g of composite sodium chlorate, 300 g of composite sodium hydrogen sulfate, 20 g of citric acid and 4 g of calcium, and the balance is water.

[0029] The preparation method of the above agricultural pesticide residue reducer comprises the following steps:

[0030] S1, dissolve 200g of composite sodium chlorate in 200g of water, mix with 4g of calcium and heat to 40 degrees;

[0031] S2. Dissolve 300 g of composite sodium bisulfate in 600 g of water and add it to the mixture of step S1, and heat it to 50 degrees; S3. Finally, add 20 g of citric acid, stir and mix, and then add water to 1 kg and allow it to fully dissolve for 2 hours to obtain an agricultural pesticide residue reducer.

[0032] When used, the obtained agricultural pesticide residue reducer is diluted 1000 times with water and used for pesticide removal. Taking 50mg / L clothianidin aqueous solution as an example, the pesticide residue rate can be reduced from 100% to 62.2%. Figure 2 shown.

[0033] Example 3

[0034] The agricultural pesticide residue reducer of the present invention contains the following components in every 1 kg of the agricultural pesticide residue reducer: 150 g of composite sodium chlorate, 250 g of composite sodium hydrogen sulfate, 22 g of citric acid and 7 g of calcium, and the balance is water.

[0035] The preparation method of the above agricultural pesticide residue reducer comprises the following steps:

[0036] S1, dissolve 150g of composite sodium chlorate in 300g of water, mix with 7g of calcium and heat to 40 degrees;

[0037] S2. Dissolve 250 g of composite sodium bisulfate in 500 g of water and add it to the mixture of step S1, and heat it to 60 degrees; S3. Finally, add 22 g of citric acid, stir and mix, then add water to 1 kg and allow it to fully dissolve for 2 hours to obtain an agricultural pesticide residue reducer.

[0038] When used, the obtained agricultural pesticide residue reducer is diluted 500 times with water and used for pesticide removal. Taking 50 mg / L thiamethoxam aqueous solution as an example, the pesticide residue rate can be reduced from 100% to 55.5%. Figure 3 shown.

Claims

1. An agricultural pesticide residue reducer, characterized in that: The components contained in each kilogram of agricultural pesticide residue reducer are as follows: 100-200g of compound sodium chlorate, 200-300g of compound sodium bisulfate, 18-22g of citric acid and 3-7g of calcium, and the balance is water.

2. The method for preparing the agricultural pesticide residue reducer according to claim 1, characterized in that: The method comprises the following steps: S1. Dissolve the composite sodium chlorate in water and mix with calcium and heat to 30-40 degrees; S2, then add the composite sodium bisulfate dissolved in water and heat to 45-60 degrees; S3. Finally, add citric acid, stir and mix, and then add water to 1 kg and allow it to fully dissolve for 1-2 hours to obtain the agricultural pesticide residue reducer.

3. The method for preparing the agricultural pesticide residue reducer according to claim 2, characterized in that: In the steps S1 and S2, the amount of water used to dissolve the composite sodium chlorate and the composite sodium bisulfate is appropriate to achieve dissolution.

4. The use of the agricultural pesticide residue reducer according to any one of claims 1 to 3, characterized in that: After diluting agricultural pesticide residue reducers 100-1000 times with water, they are used to degrade pesticides in fruits and vegetables at different stages.

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