Composition for pest control and its preparation method and application

A pest control and composition technology, applied in the field of pesticides, can solve the problems of inability to quickly kill insects, poor insecticidal effect, and resistance, and achieve the effect of solving flammability problems, suitable for popularization and application, and preventing coma

Inactive Publication Date: 2018-06-12
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] This example provides a preparation method of the composition of the present invention, specifically:

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

[0023] Among them, the purity 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 mixer, the components in the fumigant are shown in Table 1:

[0026] Table 1 Fumigant distribution ratio table

[0027]

Embodiment 3

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

[0030] Pine wood nematode is a pathogen that causes pine blight, which is a devastating disease of pine trees. The pine wood nematode spreads to all parts of the world with the dispatch of the diseased wood and the transportation of the cargo wood packaging products, becoming a worldwide quarantine pest.

[0031] At a fumigation temperature of 10-30°C and a relative humidity of about 70%, the wood sections with pine wood nematodes are sawn into 10cm pieces, and they are placed in 7 1.5L jars, each jar separately The fumigant prepared in Example 2 according to the proportions of serial numbers 1-7 in Table 1 was used 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 effect of the 7 groups of fumigants on pine wood nematode was 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 specifically relates to a composition for pest control and its preparation method and application. Background technique [0002] Methyl bromide is a widely used fumigant. It has the characteristics of wide insecticidal spectrum, significant efficacy, strong permeability, and short treatment time. It was once the most commonly used fumigant for import and export quarantine, storage, transportation and packaging, and soil disinfection. However, due to its destruction of the ozone layer, it was completely banned in China in 2015. Phosphine, as a substitute for methyl bromide, is widely used in import and export quarantine and fumigation of storage pests. It has the advantages of strong penetration, good insecticidal effect, and low residue. However, the time required for phosphine fumigation treatment is too long to meet the need for rapid killing of pests. At the same time, due to unreasonable ...

Claims

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Application Information

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Patent Type & Authority Applications(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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