Chitosan oligosaccharide composition for preventing and controlling rice plant hoppers and use and using method thereof

Abstract

The invention relates to a chitosan oligosaccharide composition for preventing and controlling rice plant hoppers, and use and a using method of the chitosan oligosaccharide composition, and particularly provides a pesticide composition for preventing and controlling the rice plant hoppers, wherein the pesticide composition comprises chitosan oligosaccharide which accounts for 0.004 to 0.025 percent of the weight of the pesticide composition. The invention also provides the use of the chitosan oligosaccharide-comprising pesticide composition and a method for using the chitosan oligosaccharide-comprising pesticide to prevent and control the rice plant hoppers. By the pesticide composition and the method, the rice plant hoppers can be prevented and controlled, particularly after crops which are infected by the rice plant hoppers are treated by using the chitosan oligosaccharide-comprising pesticide, the rice plant hoppers are prevented and controlled, phytotoxicity is not generated, pesticide residues are not produced, and environment-friendly prevention and control over the rice plant hoppers is realized.

Description

technical field

[0001] The invention belongs to the field of agricultural chemistry, and in particular relates to a control composition and a control method for rice planthoppers, in particular to a chitosan oligosaccharide composition for controlling rice planthoppers and its use and method. Background technique

[0002] Rice planthopper (including brown planthopper, white-backed planthopper, and brown planthopper), belonging to the order Homoptera, planthopper family, is one of the main migratory pests on rice in China and Asian countries. It has long-distance migratory habits and is widely distributed in tropical, subtropical and temperate regions of Asia, including the South Asian subcontinent, Southeast Asia, the South Pacific Islands and Australia. Brown planthopper has a single diet and only uses cultivated rice and wild rice as hosts. The way of harm: mainly through directly sucking the liquid nutrients in the phloem of the rice plant, the growth of rice is inhibite...

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