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1高温季节为什么进行温室和大棚消毒?答:近几年春天倒春寒出现的天数较往年偏多,越冬茬栽培的番茄、辣椒、黄瓜等作物春季植株死亡、烂秧等现象较为普遍,特别是在种植3～5a(年)的温室、大棚中土传病虫害发生尤其严重。主要是由于病菌(多为疫霉菌)引起的根腐病、枯萎病、茎基腐病、青枯病、根结线虫病等,现已成为生产中防治的难题,目前尚缺乏高效低毒的农药。生产中
A hot season why the greenhouse and greenhouse disinfection? A: The spring in recent years, the number of late spring cold appear more than in previous years, overwintering crop cultivation of tomatoes, peppers, cucumber and other crops in spring plant death, rotten seedlings and other phenomena are more common, especially in the Planting 3 ~ 5a (years) of the greenhouse, soil pests and diseases in the greenhouse is particularly serious. It is mainly due to root rot, wilt, stem rot, bacterial wilt and root knot nematode caused by pathogenic fungi (mostly Phytophthora infestans), which has become a difficult problem in production and control. At present, there is a lack of high-efficiency and low-toxicity pesticide. in production