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近年来塑料大棚、日光温室发展较快，有些乡村已形成规模，据调直种黄瓜较多。黄瓜霜霉病露地及保护地均可发生危害，但保护地更为严重，一般损失20％左右，严重时50％以上，甚至绝收。现浅谈该病的诊治，供参考。一、发病症状黄瓜苗期、成株期均可发病，初发病叶呈水浸状黄色
Plastic greenhouses in recent years, the rapid development of solar greenhouse, some villages have formed a scale, according to straighten cucumber more. Cucumber downy mildew disease and protected areas can be exposed, but the protection is more serious, the general loss of about 20%, severe, more than 50%, or even absolute. Now talk about the diagnosis and treatment of the disease for reference. First, the symptoms of cucumber seedling stage, adult disease can occur, the initial onset leaves were flooded yellow