Method for remediating soil pesticide residues

A technology for pesticide residues and restoration methods, which is applied in the restoration of polluted soil, soil conditioning materials, chemical instruments and methods, etc., to achieve the effects of increasing loosening performance, ensuring water storage, and reducing pesticide residues

Active Publication Date: 2019-01-18
ZHENGZHOU UNIVERSITY OF AERONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the purpose of the present invention is to provide a method for remediating soil pesticide residues, which solves the environmental and health problems caused by pesticide residues.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for remediating soil pesticide residues, comprising the steps of:

[0028] 1) Deep plowing and deep loosening, and straw returning to the field: deep plowing and deep loosening of the soil to 60cm to ensure that the soil is loose and free from agglomeration, while spraying soil repair agents and putting crop straws into the soil; increasing the organic matter and air permeability of the soil;

[0029] The addition amount of the soil repair agent is 1 kg / ton of soil; the addition amount of straw is 15 kg / ton of soil; the straw is matured before returning the straw to the field, and the specific operation is to add slaked lime and caustic soda to the mixed solution cycle after crushing the straw Spray, then spray with phosphoric acid cycle, reach the purpose of neutralization; Described soil remediation agent is made up of the raw material of following weight part: 90 parts of potassium humate, 35 parts of pituitary bark, 30 parts of hibiscus, 20 parts of tannins,...

Embodiment 2

[0040] A method for remediating soil pesticide residues, comprising the steps of:

[0041] 1) Deep plowing and deep loosening, and straw returning to the field: deep plowing and deep loosening of the soil to 70cm to ensure that the soil is loose and free from agglomeration, while spraying soil repair agents and putting crop straws into the soil; increasing the organic matter and air permeability of the soil; the soil restoration The addition amount of agent is 3kg / ton of soil; the addition amount of straw is 30kg / ton of soil;

[0042] Before the straw is returned to the field, the straw is subjected to aging treatment, and the specific operation is to add slaked lime and caustic soda to the mixed solution for circulating spraying after crushing the straw, and then spraying with phosphoric acid to achieve the purpose of neutralization; the soil restoration agent It consists of the following raw materials in parts by weight: 140 parts of potassium humate, 90 parts of pituitary b...

Embodiment 3

[0053] A method for remediating soil pesticide residues, comprising the steps of:

[0054] 1) Deep plowing and deep loosening, and straw returning to the field: deep plowing and deep loosening of the soil to 65cm to ensure that the soil is loose and free from agglomeration, and at the same time spray soil repair agents and put crop straws into the soil; increase the organic matter and air permeability of the soil; the soil restoration The addition amount of agent is 2kg / ton of soil; the addition amount of straw is 25kg / ton of soil;

[0055] Before the straw is returned to the field, the straw is subjected to aging treatment, and the specific operation is to crush the straw, add slaked lime and caustic soda for circulating spraying, and then use phosphoric acid for circulating spraying to achieve the purpose of neutralization;

[0056] The soil remediation agent is composed of the following raw materials in parts by weight: 115 parts of potassium humate, 60 parts of pituitary b...

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PUM

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Abstract

The invention discloses a method for remediating soil pesticide residues. The method comprises the following steps: 1) performing deep ploughing, deep scarification and straw turnover; 2) laying a layer of beta-cyclodextrin grafted fibers at the bottom of soil; 3) irrigating; 4) regulating the pH value to be 6.0-7.0, and adding microbes; and 5) intercropping, namely intercropping plants capable ofadsorbing pesticide residues and corn or soybeans in the soil treated in the step 4), so that the aims of absorbing the pesticide residues and increasing yield can be achieved. According to the method for remediating soil pesticide residues provided by the invention, physical, chemical and biodegradable manners are combined, so that the pesticide residues in the soil can be reduced, the soil structure is deeply improved, beneficial bacteria in the soil and dormant active organic matters are activated, and the soil vitality is wakened. The adopted remediation agent is mild, and the original equilibrium system of the soil is not damaged.

Description

technical field [0001] The invention relates to the field of remediation of pesticide residues, in particular to a method for remediation of soil pesticide residues. Background technique [0002] The use of pesticides in agricultural production has made an indelible contribution to eliminating pests and diseases, eradicating weeds, and increasing agricultural production. However, due to the use of high-toxicity, high-residue, and refractory pesticides, it has also seriously affected the ecological environment and human health. hazards. According to statistics, more than 4 million tons of pesticides are used in the world every year, and more than 90% of the pesticides are left in the soil, air and water. It exists in the form of organic phosphorus or chlorine, especially BHC (BHC), DDT (DDT), etc. are not easy to decompose, which has buried hidden dangers to people's health, and at the same time caused environmental pollution and resource damage. [0003] In recent years, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08B09C1/10C09K17/40C09K101/00
Inventor 梁丽珍王杰李庆召郑宾国陶贺
Owner ZHENGZHOU UNIVERSITY OF AERONAUTICS
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