Bacterial wilt is a kind of short rod-shaped bacteria. Its host range is very wide, reaching more than 200 crops and plants in more than 30 families. The main hosts are peanuts, tobacco, tomatoes, peppers, potatoes and so on. The onset conditions are mainly high temperature and high humidity environments, short rotation periods, continuous cropping for many years or weak varieties resistance. Here are some methods for prevention and control: 1. Cultivation and control (1) Crop rotation. The rotation of peanuts and paddy crops on paddy and dry land and the crops on the dry land for 2 to 3 years are carried out. Such as the use of peanuts and sweet potatoes, cassava, soybeans, corn and other round seeds, can effectively reduce the risk of bacterial wilt. (2) Adopt resistant varieties. (3) improve soil fertilization. The use of deep ploughing and soil remediation and decomposing compost and manure fertilizer on sandy soil can reduce the occurrence of bacterial wilt. 2. Control of pesticides When bacterial wilt begins to occur, use a copper-ammonia solution for gonorrhea vaccine and healthy plants near the diseased seedlings. Each strain of 250 grams of leaching solution has a certain control effect. During the growing period, 50% of peanuts must be treated with 1000-2000 times of liquid, sprayed every 10 to 20 days, and sprayed for 2 or 3 times. 3, collection of diseased plants Bacterial wilt bacteria can generally survive for many years in diseased plants and their residues and compost. After harvesting, timely collect the diseased plant residue and put it into the paddy field, sprinkle with the appropriate amount of lime, and stack it as base fertilizer.
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