栗疫病是世界性的栗树病害，分布广，危害重。我国北京、河北、辽宁、江苏、安徽等省市均有分布，现已列为森林植物检疫对象。栗疫病主要发生于树干、枝条上，发病初期为水清状，圆形或不规则，黄褐色或紫褐色，病皮稍肿皱，皮层组织腐烂，后期树皮子缩、枝条枯死，病枝上密生 Chestnut blight is a worldwide chestnut disease, widely distributed, endangered. China’s Beijing, Hebei, Liaoning, Jiangsu, Anhui and other provinces are distributed, is now listed as a quarantine object of forest plants. Chestnut blight occurs mainly in the trunk, branches, the early onset of clear water, round or irregular, brown or purple-brown, slightly swollen skin disease, cortical tissue decay, late bark shrinkage, dead branches, diseased branches Intimate