Based on the study of the occurrence of major pests in tea, this technology proposes a prevention and control strategy for chemical control and virus control using different chemical pest control baselines for different tea pests to produce pesticide-free tea. Its technical achievements are at the leading level in China. Chemical control of the chemical control of tea green leafhopper to determine its baseline, using the "winter defense plus secondary prevention" prevention and control strategy, that is: after the autumn tea stopped mining, tea small green leaves and eggs at the end of the hatching, chemical pesticide control , lowering the number of winter insects, so that the first peak of the next year will be postponed until the end of June, and the other pesticides will be combined backwards. The first pesticide will be sprayed at the beginning of the first peak (Uranus or quick-killing 5000-6000 times) ), spray a second pesticide (1000 times of dimethoate and dichlorvos) every 10 to 12 days. After this defense, the second peak period is postponed for 15 days and enters the second joint defense in the fall. The number of direct reductions in the use of pesticides was reduced from 9 routine treatments to 5 times. Virus control For food-borne pests, the often occurring tea caterpillars, the oil worms, and the tea leaf curler are all controlled by viruses.
Virus dose: tea caterpillar polyhedrosis virus, field application amount 50 billion polyhedrins / acre, smaller leaf roller moth granulosis virus, field application amount 125mg / acre, oil paulownia multi-purpose virus, field application amount 100 billion polyhedrosis / mu.
Spraying time: It is appropriate to larvae to 1 to 2 years of age.
Control effect: the contemporary control effect of the caterpillars is 83-85%; the control effect of the tea leaf curler is only %; the control effect of the oil tongs is 94.1%, and the effect is 3 to 5 years.
The technical achievements have been applied in more than ten tea farms in Hubei Province, with an accumulated area of ​​540,000 mu, and the tea production has increased by more than 1.4 million kg, increasing the income by 13.28 million yuan; the annual average reduction of application of pesticides 3 to 4 times can save pesticides 60~ 800,000 yuan.
Virus dose: tea caterpillar polyhedrosis virus, field application amount 50 billion polyhedrins / acre, smaller leaf roller moth granulosis virus, field application amount 125mg / acre, oil paulownia multi-purpose virus, field application amount 100 billion polyhedrosis / mu.
Spraying time: It is appropriate to larvae to 1 to 2 years of age.
Control effect: the contemporary control effect of the caterpillars is 83-85%; the control effect of the tea leaf curler is only %; the control effect of the oil tongs is 94.1%, and the effect is 3 to 5 years.
The technical achievements have been applied in more than ten tea farms in Hubei Province, with an accumulated area of ​​540,000 mu, and the tea production has increased by more than 1.4 million kg, increasing the income by 13.28 million yuan; the annual average reduction of application of pesticides 3 to 4 times can save pesticides 60~ 800,000 yuan.
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