I. The tea-footworm Although the temperature in March of this year was more than 1°C higher than the same period of the previous calendar year, it was lower by 05°C and 32°C than the same period of last year and the same period of the previous year. Therefore, the egg hatching period of the first generation of Chajue this year was delayed from the previous two years. It is expected that the first generation of field control will be on April 21-27, which will be delayed by 1 day and 7 days respectively compared with last year and the previous year. The amount of occurrence of the first-generation tea planthopper in the field generally does not exceed the prevention and control index (the index is 4,000 larvae per acre of tea plantation, or an occurrence center per 10 meters long tea plantation), and advocates the selection and treatment. Excessive tea plantations can be sprayed in full. Elixir can use 25% enemy kill or 25% kung fu, the amount of the first acre is 25 ml. There is a backpack machine available for picking tea gardens. Each bottle of water is added with 8-10 ml. This generation of prevention and control period is in the spring tea picking period. All production units and tea farmers must strictly implement the safety interval after the use of drugs. After the above pesticides are used, they must be separated by 6 days to harvest the tea. 2. Black-spotted aphid Black-skinned whitefly is one of the main pests in tea gardens in Jingshan Town, Yuhang District. It is predicted that this year's occurrence may be lighter than in previous years, but the amount of insects is still large. Grasping the prevention and control at the peak stage of adult adults can reduce the amount of insects in the field and reduce the degree of occurrence. It is predicted that the first generation of adult insects will be properly controlled this year from April 20th to 25th. 80% of dichlorvos can be used as an agent, with a dose of 50 ml per mu. Spray cover spray. The safety interval after administration is 7 days.
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