湿度为８５％，高温、高湿利于病害的发生与流行，在管理过程中，施肥不足、植株生长衰弱、通风透光不良，易发病。设施栽培较露地栽培发病重的关键原因就是棚室一般湿度大。５、危害严重来势猛，流行快，损失大。此病害在适宜环境条件下，尤以多雨的年份发病快流行迅速，７～ Humidity of 85%, high temperature, high humidity conducive to the occurrence and prevalence of disease in the management process, inadequate fertilization, plant growth and weakness, poor ventilation and ventilation, easy to disease. Facility cultivation is more exposed to the key reason for the incidence of heavy sheds are generally large humidity. 5, serious danger Meng trend, fast-popping, big loss. This disease in the appropriate environmental conditions, especially in the rainy years of rapid onset of rapid onset, 7 ~