Prevention of common diseases and pests of vegetables in high temperature and high humidity season
2018-11-02 17:02:19
At present, it is the climate of high temperature and high humidity. It is suitable for the spread of various diseases and insect pests of vegetables. To ensure the good harvest of summer vegetables, the prevention and control of various common diseases and pests must be done in a timely manner in the production of vegetables. First, to strengthen the cultivation and management, improve the disease resistance of vegetables in a timely manner to drain water and enhance root vitality. Sheltered vegetables should be uncovered and ventilated to reduce the temperature and humidity in the shed and improve the resistance of plants. Second, the following pesticides can be used to control the following pests (1) powdery mildew: in the early stages of drug use. It can be sprayed with 1000 to 1500 times solution of 10% World High Water Dispersant or 5000 times solution of DuPont Fuxing Star Emulsion at 40%. It can be used once every 7 days and even prevent 2 to 3 times. Or to make a boring shed, the pathogen can be killed at a noon temperature of 42 to 45°C for 2 hours, and the effect is obvious. (2) Cruciferous soft rot: 72% agricultural streptomycin 4000 times; neembumycin 4000 times or 77% can kill 600-800 times. (3) Melon larvae: 0.6% of Hejong exterminator is 1250-1500 times liquid. (4) Yellow hop: A 40% Loth-Emulsion 1000 times solution or 90% crystal trichlorfon 800 times solution is sprayed, even for 2 or 3 times, and severe plots can be combined with irrigating roots. (5) Plutella xylostella: 5% Ruijinte 1000-1500 times solution or 5% Suppository EC 2000 times. (6) Starscream: 20% sputum 3000 times and 1% sputum 3000 times.
Cbz-Amino Acid ,N-Benzyloxycarbonyl-L-Valine,N-Cbz-L-Proline Crystalline
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