Method for preventing and controlling tetranychus viennensis of fruit trees based on combination of chemical pesticides and chrysoperla sinica

Abstract

The invention relates to the technical field of agricultural insect pest prevention and treatment, in particular to a method for preventing and controlling tetranychus viennensis of fruit trees basedon combination of chemical pesticides and chrysoperla sinica. The method is used for preventing and controlling the tetranychus viennensis of the fruit trees based on combination of eugenol, sophocarpidine, pyrethrin, amino-oligosaccharin and the chrysoperla sinica. By artificially planting medicago sativa, a mixed grass growing mode combining medicago sativa and natural grass growing is formed inan apple orchard, and food and habitat places are provided for natural enemies; then, based on the evaluation result of the occurrence degree of the tetranychus viennensis of the fruit trees and thequantity of the chrysoperla sinica in the current corresponding orchard, the usage and dosage of a chemical agent and the quantity of the chrysoperla sinica to be released are planned, so that the quantity of the chrysoperla sinica in the orchard can be always at a relatively reasonable level; and the purpose of continuously controlling the harm of pests is achieved, and the use amount of chemicalpesticides is greatly decreased.

Description

technical field [0001] The invention relates to the technical field of agricultural pest prevention and control, in particular to a method for joint prevention and control of fruit tree hawthorn spider mites based on chemical pesticides and Chinese lacewings. Background technique [0002] Tetranychus hawthorn is one of the main pests of deciduous fruit trees in my country, especially in apple orchards in northern China, and is one of the main pests of orchard production. [0003] At present, the control of hawthorn spider mite mainly uses chemical pesticides for spraying, but the long-term and unreasonable use of pesticides not only causes environmental pollution, but also causes harmful mites to become rampant again, and can make harmful mites develop resistance to pesticides and reduce their resistance to drugs. Sensitivity; in addition, spraying a large amount of chemical pesticides will also cause fruit pesticide residues to exceed the standard, affecting the health of e...

AI Technical Summary

Problems solved by technology

[0003] At present, the control of hawthorn spider mite mainly uses chemical pesticides for spraying, but the long-term and unreasonable use of pesticides not only causes environmental pollution, but also causes harmful mites to become rampant again, and can make harmful mites develop resistance to pesticides and reduce their resistance to drugs. Sensitivity; In addition, spraying a large amount of chemical pesticides will also cause fruit pesticide residues to exceed the standard, affecting the health of eaters