Composite insecticide for rice and its preparation method and application

Abstract

A compound insect repellant for rice and its preparation method and application, the compound insect repellent for rice comprises wormwood essential oil, cinnamon essential oil and a carrier. The preparation method is as follows: stirring wormwood essential oil, cinnamon essential oil and carrier, or also including citrus essential oil and citronella essential oil, and standing to balance. The application is to mix the compound insecticide for rice with the rice in an amount of 1.0-2.0 g / kg rice, and let it stand for more than 14 days. The compound insecticide for rice of the present invention has good repelling and insecticidal effects, and the repelling rates of rice weevil and red beetle are respectively as high as 97.3% and 100% in 24 hours; Up to 85.2%, 94.4%, and the 28-day mortality rate can reach 100% and 99.2% respectively; the drug effect is long, can last for more than 60 days, the long-lasting effect is good, no organic solvent is added, and it is green and environmentally friendly. The method of the invention is simple, low in cost and suitable for industrial production.

Description

technical field [0001] The invention relates to a compound insect repellant and its preparation method and application, in particular to a rice compound insect repellent and its preparation method and application. Background technique [0002] Stored grain pests usually refer to insects that harm stored grain and its products, and most of them belong to the order Lepidoptera and Coleoptera in the class Insecta. In the process of grain storage, insect pests are one of the important causes of grain loss. At present, the main way to prevent and control stored product pests in China is to use chemical agents such as phosphine to fumigate. For a long time, the use of chemical insecticides to control stored grain pests has caused the failure of the application of phosphine fumigation to important stored grain pests in grain depots in various places in my country. Due to the emergence of new era requirements such as green storage of grains, some of the existing stored grain protec...

AI Technical Summary

Problems solved by technology

However, because it is still diluted with organic solvents such as acetone and used in the form of aerosols, there are safety risks such as safety hazards to users and explosion hazards.

[0009] In summary, plant essential oils generally have the characteristics of volatile, easy to oxidize, short residue, and unstable chemical properties. In addition, organic solvents in emulsifiable plant-derived insect repellents may pollute the environment; Protective agents, such as Guchongjing and Anliangxian, etc., are compounded with a small amount of chemical agents, which pose safety hazards to users, explosion hazards and other safety risks

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