Composition for pest control and its preparation method and application

A technology for pest control and composition, applied in the field of pesticides, can solve problems such as poor insecticidal effect, resistance, and inability to quickly kill insects, and achieve the effects of being suitable for popularization and application, preventing coma, and easy to operate.

Inactive Publication Date: 2020-03-31
SOUTHWEST RES & DESIGN INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a composition for pest control, which solves the problems in the prior art that the pests cannot be quickly killed, the main quarantine pests are generally resistant to phosphine, and the insecticidal effect is not good.

Method used

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  • Composition for pest control and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The present embodiment provides the preparation method of the composition of the present invention, specifically:

[0022] The ethyl formate liquid is gasified through a gasification device to obtain the desired product ethyl formate gas. The ethyl formate gas and carbon dioxide and / or nitrogen are mixed by volume in a closed pressure-resistant fumigant compounder to obtain the desired mixed gas fumigant of ethyl formate and inert gas.

[0023] Among them, the purities of ethyl formate gas, carbon dioxide and nitrogen are all 99% by mass fraction.

Embodiment 2

[0025] The mixed gas fumigant prepared by the method in Example 1 in the fumigant compounder, the components in the fumigant are shown in Table 1:

[0026] Table 1 Fumigant composition ratio table

[0027]

Embodiment 3

[0029] The composition of the present invention is used to kill the pine wood nematode.

[0030] Pine wood nematode is a pathogen that causes pine wilt, a devastating disease of pine trees. The pine wood nematode spreads to all parts of the world with the transportation of infected wood and the transportation of wood packaging products, and has become a worldwide quarantine pest.

[0031] At a fumigation temperature of 10-30°C and a relative humidity of about 70%, the wood segments with pine wood nematodes were sawed into 10cm pieces and placed in seven 1.5L jars, each jar was The fumigant prepared according to the proportions of serial numbers 1-7 in Table 1 was introduced into Example 2 for fumigation, the usage amount of the fumigant was 50 mg / L, and the fumigation time was 12 hours.

[0032] The results showed that the killing effects of 7 groups of fumigants on pine wood nematodes were all above 90%.

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Abstract

The invention discloses a composition for pest control and its preparation method. The composition can solve the problems that pests cannot be rapidly killed by the prior art and main quarantine pestscan generally resist hydrogen phosphide and is poor in pest killing effect. The composition is prepared from, by volume, 10-60 parts of gaseous ethyl formate and 40-90 parts of inert gas. The invention further provides an application of the composition in preparing pesticide for pest control. The composition can rapidly kill pest and is environment-friendly. The preparation method is simple and convenient to operate, and suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and in particular relates to a composition for pest control and a preparation method and application thereof. Background technique [0002] Methyl bromide is a widely used fumigant. It has the characteristics of wide insecticidal spectrum, remarkable efficacy, strong permeability and short treatment time. It was once the most commonly used fumigant for import and export quarantine, storage, transportation packaging and soil disinfection. But it was banned in China in 2015 because of its ozone-depleting properties. As a substitute for methyl bromide, phosphine is widely used in import and export quarantine and fumigation of storage pests. It has the advantages of strong penetrating power, good insecticidal effect and low residue. However, phosphine fumigation treatment takes too long to meet the need for rapid pest control. At the same time, due to the unreasonable use for a long time, the ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N37/02A01N59/04A01N59/00A01N25/18A01P7/04A01P15/00
CPCA01N25/18A01N37/02A01N59/00A01N59/04Y02A50/30
Inventor 刘鹏飞李泽军卢世峰何霞
Owner SOUTHWEST RES & DESIGN INST OF CHEM IND
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