Non-pesticide harmless tea pest prevention and control technology Based on the study of the occurrence regularity of major pests in tea, a prevention and control strategy for chemical prevention and virus control based on the determined chemical prevention baseline for different tea pests was proposed to produce pesticide-free harmless tea. Its technological achievements rank the leading domestic level. The chemical prevention and control of the tea leaf green leafhopper chemical control to determine its prevention and control baseline, the use of "winter prevention and secondary prevention and control" of the prevention and control strategy, that is: After the stop of autumn tea, tea leaves, the last generation of eggs hatched, the prevention of chemical pesticides , Decrease the base number of overwintering insects, thus postponing the initial period of the first peak of the following year until late June, and combining other insect pests backwards, spraying the first pesticide at the beginning of the first peak (Uranus or rapid killing 5000-6000 times ) The second pesticide was sprayed 10 to 12 days after a duration (1000 times Dichlorvos). After this defense, the second peak was postponed for 15 days and entered the second joint defense in autumn. The number of direct reductions in the use of pesticides has been reduced from 9 times for conventional control to 5 times. Virus Control Against food-borne pests, commonly occurring tea caterpillars, quercus terrestris, tea leaf roller moths are all treated with viruses. Virus dose: tea caterpillar polyhedrin virus, field application 500 billion polygons/mu, smaller leaf roller moth granulosis virus, field application volume 125 mg/mu, tung oiltape polychaete virus, field application 100 billion polyhedra/ mu. Spraying time: It is appropriate for larvae to be incubated to 1-2 years of age. Control effect: The current control effect of the caterpillar is 83~85%; the control effect of the tea leaf roller moth is only %; the control effect of the tung tree callus is 94.1%, and the sustained effect is up to 3 to 5 years. This technical achievement has been applied in more than a dozen tea farms in Hubei Province, with an accumulated area of ​​540,000 mu. The tea production has increased by more than 1.4 million kg and the income has increased by 13.28 million yuan. The annual average reduction in pesticide application has been 3 to 4 times, saving 60 to 60 pesticides. 800,000 yuan.
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