近些年来,在研究解决病虫害产生强抗药性,用药次数增多、防治成本提高、化学农药污染环境等问题的同时,也研究出了几种无公害蔬菜病虫害的防治方法。现介绍给各地菜农。 1、黄瓜细菌性斑点病本病是由假单胞杆菌属的细菌浸染,是危害黄瓜的一种严重病害。黄瓜染病后,先在叶上产生水浸状斑点,后扩大成黄褐色病斑,病斑易脆裂或脱 In recent years, research and development to solve the strong resistance of pests and diseases, increasing the frequency of medication, prevention and control costs, chemical pesticides, polluting the environment and other issues, but also developed several pollution-free pest control methods. Now introduced to vegetable farmers. 1, cucumber bacterial spot disease The disease is caused by the bacteria Pseudomonas sp., Is a serious disease endangering cucumber. Cucumber disease, the first leaf in the flooding-like spots, after the expansion into the brown spots, lesions easy to brittle or off