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瓜类白粉病病原物为单丝壳白粉菌,属子囊菌亚门真菌。白粉病的发生与霜霉病有很大差异。降雨或者叶片的水滴都不利于白粉病的发生。白粉病喜干湿交替的气象环境,
Melon powdery mildew pathogen Monascus shell powdery mildew, belonging to Ascomycetes subfamily fungi. The occurrence of powdery mildew and downy mildew are very different. Rain or leaf water droplets are not conducive to the occurrence of powdery mildew. Powdery mildew hi alternate wet weather,