瓜叶菊白粉病瓜叶菊在幼苗期和开花期如室温高、空气湿度大,叶片上最容易发生白粉病,严重时可侵染叶柄、嫩枝、花蕾等。初发时,叶片出现零星的、不明显的白斑,发展后整个叶片布满灰白色粉状霉层。植株受害后,叶片、嫩梢扭曲萎蔫,生长衰弱,有的完全不能开花。发病严重时,导致叶枯,甚至整株死亡。防治方法①室内经常保持良好的通风条件,增加光照;② Cineraria powdery mildew Cineraria at seedling and flowering stage such as high temperature, air humidity, the most prone to powdery mildew on leaves, severe petiole, twigs, buds and so on. Initial episodes, sporadic sporadic, not obvious white spot, the development of the entire leaf covered with white powdery mildew layer. Plant damage, leaves, tender shoots wilting, weak growth, and some can not flowering. Serious disease, resulting in leaf blight, and even whole plant died. Prevention methods ① indoor often maintain good ventilation, increase the light; ②