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1 南瓜疫病的症状南瓜疫病在整个生育时期都可以发生,危害叶、茎及果实。幼苗期发病,茎基部出现水浸状软腐,多呈暗绿色圆形斑,近地面处缢缩或枯死,常造成幼苗倒伏。成株期叶片上产生暗绿色圆形病斑,边缘不明显,湿度大时,病斑迅速扩展,叶片腐烂象开水烫过一样,并在病部可看到白霉。茎部各部位可发生
1 The symptoms of pumpkin disease Pumpkin disease can occur throughout the reproductive period, endangering leaves, stems and fruits. Emergence of seedling stage, the stem base appears submerged soft rot, mostly dark green round spots, shrinking or dead near the ground, often causing seedling lodging. Dark green circular lesions on the leaves of adult plants, the edge is not obvious, the humidity is large, the rapid expansion of disease spots, leaves rot like boiling water the same, and in the disease can be seen white mold. Stems can occur in all parts