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黄瓜霜霉病(Pseudoperonosporacubensis)是老病害,年年都有发生,为害严重。其容易与角斑病混淆,现在将两种病害特征比较见表1。
Cucumber downy mildew (Pseudoperonospora cubensis) is an old disease, occur year after year, serious damage. It is easy to be confused with angular leaf spot, and now the two disease characteristics are compared in Table 1.