Method for enhancing soil fumigant disinfection effect

A fumigant and soil technology, applied in the field of soil fumigation

Inactive Publication Date: 2015-11-18
北京捷西农业科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no reports on how to enhance the diffusion of fumigants in soil. If the diffusion of fumigants in soil is enhanced, combined with methods such as film covering, the disinfection effect of soil fumigants will be greatly improved.

Method used

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  • Method for enhancing soil fumigant disinfection effect
  • Method for enhancing soil fumigant disinfection effect
  • Method for enhancing soil fumigant disinfection effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The experiment is divided into an experimental group and a control group. The medicament used in the experimental group is a mixed medicament. The preparation method is to add No. 3 aviation kerosene (Jetfuel No.3) accounting for 1% of the mass of chloropicrin to the chloropicrine, and mix well , have to mix medicine. The drug used in the control group was trichloropicrin without adding aviation kerosene.

[0016] Determination of the distribution of the agents used in the experimental group and the control group in the soil: Specifically, the soil column system was used to measure the emission of chloropicrin. The steps are as follows: the PVC pipe is used as the main body of the soil column, and the emission flow box is placed on the top, and the bottom is the leaching collection. device. The PVC pipe is 72cm high and has an inner diameter of 15cm. Set up 9 sampling points at 5cm, 10cm, 15cm, 20cm, 25cm, 30cm, 40cm, 50cm, and 60cm below the soil surface. With a stai...

Embodiment 2

[0019] Materials: chloropicrin, No. 3 aviation kerosene (Jetfuel No.3), plastic film

[0020] Experiment site: Strawberry planting solar greenhouse in Changping District, Beijing

[0021] The experiment is divided into untreated group, experimental group and control group. The untreated group does not carry out any treatment to the soil. The medicament used in the experimental group is a mixed medicament. The preparation method is to add chloropicrin solution to the chloropicrin solution. No. 3 aviation kerosene with a mass of 1% was mixed evenly to obtain a mixed medicament. The medicament used in the control group was chloropicrin liquid without adding aviation kerosene.

[0022] Use a soil disinfection syringe to inject the medicament evenly into the soil, and the dosage of the medicament used in the control group is 35g / m 2 (group A), the dosage of the medicament used in the experimental group is 80% of that of the matched group (group B, 28g / m 2 ) and 70% (Group C, 24.5...

Embodiment 3

[0028] Materials: chloropicrin, 1,3-dichloropropene, No. 3 aviation kerosene (Jetfuel No.3), plastic film

[0029] Experiment location: Sunlight greenhouse for cucumber planting in Changping District, Beijing

[0030] The stock solution in this experiment is a mixture of chloropicrin and 1,3-dichloropropene at a mass ratio of 7:3. The medicament used in the experimental group is a mixed medicament. The preparation method is to add No. 3 Aviation Kerosene, the drug used in the control group was the stock solution, without adding aviation kerosene. The untreated group did not apply any treatment to the soil.

[0031] Use small-scale soil disinfection equipment to evenly apply the agent to the soil, and the application amount of the original solution in the control group is 45g / m 2 (group A), the administration dose of the mixed medicament of the experimental group is respectively 80% of the matched group (group B, 36g / m 2 ) and 70% (Group C, 31.5g / m 2 ), then the control gro...

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Abstract

The invention relates to a method for enhancing soil fumigant disinfection effect. The method includes: adding aviation kerosene accounting for 1%-3% of the soil fumigant mass into a soil fumigant, mixing them evenly to obtain a mixed reagent, applying the mixed reagent to soil by means of injection, with the dosage of the mixed reagent accounting for 70%-80% of the dosage of the soil fumigant. Specifically, the soil fumigan is a mixture of trichloronitromethane and 1, 3-dichloropropene or a mixture of trichloronitromethane and dimethyl disulfide. According to the method provided by the invention, aviation kerosene is added into the soil fumigant to reinforce the diffusivity of the soil fumigant and expand the action range of the soil fumigant in soil, thereby realizing the purposes of enhancing disinfection effect and reducing reagent dosage. The method is suitable for fumigation treatment of agricultural soil or matrix.

Description

technical field [0001] The invention relates to a method for enhancing the disinfection effect of a soil fumigant, which belongs to the field of soil fumigation. Background technique [0002] Continuous cropping obstacles have become a key factor restricting the sustainable and efficient development of modern agriculture in my country. Pathogenic microorganisms and pathogenic nematodes in the soil are parasitic in the soil. Once they accumulate in sufficient quantities, they can infect the roots and stems of crops, thus causing soil-borne diseases. , causing devastating effects on crops. Soil chemical disinfection is an effective method to solve soil-borne diseases. Chemical soil fumigants represented by chloropicrin, 1,3-dichloropropene, and dimethyl disulfide exist in liquid form and have good diffusion in the soil. These liquid fumigants are applied to the depth of 15-20cm in the soil and then volatilize into gas and spread around. The diffusion range can reach 15-30cm ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/02A01N33/18A01N41/12A01P1/00A01P3/00A01P5/00A01N29/02
Inventor 郭建明谭鑫寇佺张锴宋兆欣
Owner 北京捷西农业科技有限责任公司
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