Fumigation insecticide containing pirimiphos-methyl as well as preparation method and application of fumigation insecticide

Abstract

The invention discloses a fumigation insecticide containing pirimiphos-methyl as well as a preparation method and application of the fumigation insecticide. The fumigation insecticide containing the pirimiphos-methyl comprises the following ingredients in parts by weight: 40-50 parts of dichloroethane, 6-10 parts of methyl formate, 4-8 parts of methyl bromide, 10-15 parts of the pirimiphos-methyl,6-12 parts of a microemulsion and 15-20 parts of an organic solvent. The preparation method of the fumigation insecticide containing the pirimiphos-methyl comprises the following steps: Step 1, adding the pirimiphos-methyl into the organic solvent in batches, fully stirring the mixture, and heating the mixture to a certain temperature to dissolve the pirimiphos-methyl completely in the organic solvent to obtain a mixed solution 1; Step 2, adding the dichloroethane and methyl formate at a mass fraction into the mixed solution 1, and uniformly stirring the mixture to obtain a mixed solution 2;Step 3, dropwise adding the methyl bromide at a mass fraction into the mixed solution 2, and stirring the mixture to obtain the fumigation insecticide. In an application method of the fumigation insecticide containing the pirimiphos-methyl, the fumigation insecticide is diluted and then is uniformly and residually sprayed on ground.

Description

technical field [0001] The invention relates to the field of pesticides, in particular to a fumigation pesticide containing pirimiphos-methyl, a preparation method and an application. Background technique [0002] Storage pests refer to pests that live in warehouses, processing plants and other places, and endanger various animal and plant storage materials, warehouses, factory buildings, packaging equipment, storage and transportation tools and equipment. Grain storage pests are the most important part of storage pests affecting humans. [0003] The control methods of grain storage pests can be roughly divided into physical insecticide and chemical insecticide. [0004] (1) Physical insecticide. Including low temperature insecticide, controlled atmosphere insecticide, ozone insecticide, irradiation, microwave, radio frequency insecticide, etc. The first three physical insecticide methods have high requirements on the environment, equipment or air tightness, and relativel...

AI Technical Summary

Problems solved by technology

[0007] Chemical methods have the advantages of efficient and thorough insecticide, wide range of application, low cost, and processing without moving food. However, the disadvantage is that many old ingredients have high toxicity, which will bring different degrees of harm to food and the environment. Pollution

It has certain toxic and side effects on humans and animals, and the pests will develop resistance after using it for a long time