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黄瓜霜霉病［Ｐｓｅｕｄｏｐｅｒｏｎｏｓｐｏｒａ ｃｕｂｅｎｓｉｓ（Ｂｅｒｋ ｅｔ Ｃｕｒｔ）Ｒｏｓｔ］是本地区黄瓜生产上的重要病害。严重发生时，１０～２０天即可枯黄到顶，造成大幅度减产。为寻找新型高效的杀菌剂防治黄瓜霜霉病，进行本试验。１材料与方法１．１
Cucumber downy mildew [Pseudoperonospora cubensis (Berk et Curt) Rost] is an important disease in cucumber production in the region. Serious occurrence, 10 to 20 days can be yellow to the top, resulting in a substantial cut. In order to find a new and effective fungicide against cucumber downy mildew, this experiment was carried out. 1 Materials and Methods 1.1