瘤黑粉病在夏玉米生产上发生与危害有逐年上升之势,是玉米生产上的重要病害。实践表明,玉米在前期干旱、旱后多雨的情况下,会加重病情发展与危害,因病菌主要侵染植株幼嫩组织,形成黑粉瘤会消耗大量养分,并可能导致植株空秆不结实,严重影响玉米稳产高产。该病对玉米的危害,主要是受病部位形成菌瘿,幼苗期感病常会引起早死,果穗感病则会导致减产损失,大发生时甚至可导致绝收。 Occurrence of maize powdery mildew in summer maize production and the risk of rising year by year, is an important disease in corn production. Practice shows that corn in the early drought, dry and rainy conditions, will aggravate the disease development and harm, mainly due to pathogen infection of young plants, the formation of melanoma will consume a lot of nutrients, and may lead to plant stalks are not strong, Seriously affect the yield and stability of corn. The disease of corn damage, mainly by the formation of diseased parts of mycelium, seedling susceptibility often lead to premature death, fruit ear infection will lead to loss of production, even in large cases can lead to failure.