Current Tea Plant Pest Control Ideas
Affected by the typhoon "Plum Blossom", the recent rainfall in Dongyang City is high. The temperature in the tea garden is high and the humidity is high, which is conducive to the occurrence of diseases and insect pests and poses a greater threat to the safety of tea plants. At present, some pests and diseases such as small green leafhoppers, tea orange borers, tea stem borers, tea leaf spot disease, tea leaf blight, tea anthracnose, etc. have begun to appear heavy in tea field fields. Therefore, the majority of tea farmers must strengthen field investigations and do a good job in prevention and control in a timely manner.
First, small green leafhoppers: It is expected that after mid-August will enter the second peak, the tea farmers to control the excessive amount of insects tea gardens, pharmaceuticals can be 5% imidacloprid or acetamiprid 1000 times liquid control.
2. Tea orange borer: Leaves of damaged tea tree produce brown rust, leaves are dull, tea leaves are shriveled, and buds are dry, copper red, and a lot of deciduous leaves are serious. It is expected that some tea gardens will be moderately heavy in late August, and tea growers in field pests. Based on the investigation, 1.8% of avermectin 1500-2000 times spray can be used for control.
Third, tea-footworm: It is expected that the fifth-generation tea-tanning prevention and control period will be in late August, and the drug can be controlled with 5% AVS 2000 times spray.
4. Diseases such as tea leaf spot, tea leaf blight, tea anthracnose, etc.: The conditions of high temperature and high humidity are favorable to this disease, and some poorly drained tea gardens are in more serious condition. Therefore, it is necessary to do tea drainage and strengthen tea tree management. Pharmacy can be controlled with 25% ramamine 1000-fold or 70% methyl sulfide 800-fold spray.
To ensure the safety of tea production, attention should be paid to the selection of high-efficiency, low-toxic, low-residue pesticides, and to ensure the safety interval of autumn tea picking.
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