Compound agent for controlling Sogatella furcifera and synergism evaluation method of compound agent

Abstract

The invention discloses a compound agent for controlling Sogatella furcifera and a synergism evaluation method of the compound agent. The agent is formed by compounding nitenpyram and Dursban or compounding imidacloprid and isoprocarb. The nitenpyram and the Dursban are prepared in the mass ratio of 1:30 when compounded. The imidacloprid and the isoprocarb are prepared in the mass ratio of 7:40, 7:200, 7:400 or 7:1,000 when compounded. The co-toxicity factor and the co-toxicity coefficient are combined, the nitenpyram and the Dursban as well as the imidacloprid and the isoprocarb are prepared in different ratios, indoor biological assay is performed with a rice-stem dipping method, and a new agent formula ratio is provided for controlling the Sogatella furcifera. The nitenpyram has the good effect on pests with sucking mouthparts, the Durban can control rice planthoppers and rice stem borers such as rice lead rollers, chilo suppressalis and the like, and the nitenpyram and the Dursban can expand the control spectrum when compounded.

Description

technical field [0001] The invention relates to the technical field of agricultural pest control, in particular to a compound agent for controlling white-backed planthopper and a synergistic evaluation method thereof. Background technique [0002] White-backed planthopper, scientific name: Sogatella furcifera (Horváth), Homoptera, planthopper family, alias fire midge, fire spin, is a long-distance migratory pest, one of the most serious pests on rice. The damage methods are as follows: ① A large number of insect populations directly suck rice juice, resulting in a large loss of nutrients and water in rice plants. The damaged rice fields often appear "yellow ponds", "topping" and "lice burns" in the field first, and gradually expand into pieces. Even the whole field withered. ② It can also spread a variety of rice virus diseases and cause indirect damage. In addition, a large amount of honeydew will be discharged during the feeding process, and the leaves covered with honey...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a synergistic formulation of compound medicament for preventing and treating white-backed planthopper and its synergistic effect evaluation method, in order to solve the problem of the failure of single species of medicament due to the growth of rice planthopper's drug resistance, and the prevention and treatment of rice planthopper Problems of increasing difficulty offer new potion options

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