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Method for reducing diffusion of fumigation agent into atmosphere and environment protective agent

A technology of environmental protection and fumigants, applied in the fields of soil preparation methods, plant protection, chemical instruments and methods, etc.

Inactive Publication Date: 2013-04-17
INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is no report on the use of biochar addition to reduce fumigant emissions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1. Adding 1% of soil mass of biological carbon to the soil surface layer 0cm-5cm reduces the emission of 1,3 dichloropropene into the atmosphere.

[0016] Biochar: produced at 400°C-500°C.

[0017] After applying 1,3-dichloropropene to the soil by the injection method commonly used in agriculture, weigh 1% of the biological carbon of the soil surface layer 0cm-5cm soil mass and mix it evenly with the 0cm-5cm soil and spread it on the soil surface.

[0018] Determine the emission rate and the retention rate of the fumigant in the soil.

[0019] Control test: Biochar: produced at 550°C~650°C.

[0020] It has been determined that the amount of 1,3-dichloropropene emitted into the atmosphere in the treatment area without the addition of biological carbon is 35.68% of the application amount. After adding 1% of the soil mass of biological carbon to the soil surface 0cm-5cm, 1,3-bis The emission of chloropropylene into the atmosphere is 0.26% of the application rate. The contr...

Embodiment 2

[0023] Example 2. Adding 1% of soil mass biochar to the soil surface layer 0cm-5cm reduces the emission of chloropicrin into the atmosphere.

[0024] After applying chloropicrin to the soil by the injection method commonly used in agriculture, weigh 1% of the biological carbon of the soil surface layer 0cm-5cm soil mass and mix it evenly with the 0cm-5cm soil and spread it on the soil surface.

[0025] Determine the emission rate and the retention rate of the fumigant in the soil.

[0026] Control test: Biochar: produced at 550°C~650°C.

[0027] It was determined that the emission of chloropicrin in the treatment area without adding bio-carbon to the atmosphere was 31.47% of the applied amount. After adding 1% of the soil mass of bio-carbon to the surface of the soil at 0cm-5cm, 1,3-dichloropropene was released into the atmosphere The emission amount in the medium is 5.22% of the applied amount. The control emission is 0.12% of the usage. The retention rate of fumigant in the soil w...

Embodiment 3

[0028] Example 3. Adding 1% of soil mass biochar to the soil surface layer 0cm-5cm reduces the emission of cotton long into the atmosphere.

[0029] After applying cotton planting to the soil by the commonly used soil mixing method in agriculture, weigh 1% of the biochar of the soil surface layer 0cm-5cm soil mass and mix it evenly with the 0cm-5cm soil and spread it on the soil surface.

[0030] Determine the emission rate and the retention rate of the fumigant in the soil.

[0031] Control test: Biochar: produced at 550°C~650°C.

[0032] It is determined that the effective ingredient methyl isothiocyanate released into the atmosphere after the degradation of the bio-carbon treatment area is 38.42% of the applied amount. After adding 1% of the soil mass of bio-carbon to the soil surface 0cm-5cm The effective ingredient methyl isothiocyanate released from the degradation of Mianlong into the atmosphere is 0.51% of the applied amount. The control emission is 0% of the usage. The rete...

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Abstract

The invention discloses a method for reducing diffusion of a fumigation agent into the atmosphere and an environment protective agent and belongs to the field of environment protection. The method is characterized in that biochar which is 0.1%-5% of soil mass, is added to surface soil which the fumigation agent is applied to, and the soil mass relates to corresponding mass of soil in the depth of 5cm in the fumigation agent applied range. The experimental data prove that volatilization of the fumigation agent to the atmosphere can be effectively reduced, and the method is an agricultural environment-friendly method which is low in cost and high in efficiencies.

Description

Technical field [0001] The present invention relates to the field of environmental protection. Specifically, the present invention relates to a method for reducing the emission of fumigant into the atmosphere and an environmental protection agent. Background technique [0002] Soil fumigants can effectively control soil-borne diseases and insect pests and are widely used in crops such as strawberries, tomatoes, cucumbers and ginger. Because soil fumigants are volatile organic compounds, they have caused some environmental problems. For example, methyl bromide, a widely used fumigant, will be banned due to ozone depletion. According to the Copenhagen Amendment of the Montreal Protocol, development China will completely phase out methyl bromide in 2015. The commonly used fumigants now include 1,3-dichloropropene, chloropicrin, methyl isothiocyanate, methenon, methamphetamine, methyl iodide and so on. However, compared with methyl bromide, these alternatives have lower control eff...

Claims

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Application Information

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IPC IPC(8): A01B79/00A01G13/00C09K17/02C09K101/00
Inventor 王秋霞曹坳程郭美霞颜冬冬毛连纲马涛涛刘鹏飞
Owner INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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