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近日,某有机蔬菜生产基地的技术员告诉笔者,霜霉病、细菌性角斑病、白粉病、病毒病等黄瓜病害正在发生,这几种病害均是黄瓜常发性病害,且一旦发生,一是扩散非常快,二是危害相当重,甚至可导致罢园。因此,一旦发现,应控制在初发阶段。有机蔬菜可选用的药剂有限,且效果均不是非常理想,要把加强田间管理放在第一位,其次是适当选用可用的药剂加强预防和控制。一、霜霉病
Recently, a technician in an organic vegetable production base told the author that downy mildew, bacterial angular leaf spot, powdery mildew, viral diseases and other cucumber diseases are taking place. These diseases are common cucumber diseases, and once occurred, a It is very diffuse. Second, it is very harmful and can even lead to strike. Therefore, once found, should be controlled in the initial stage. Organic vegetables can be used for the limited pharmaceutical, and the effect is not very satisfactory, we should give top priority to strengthening field management, followed by the appropriate use of available agents to strengthen prevention and control. First, downy mildew