我省苹果大都分布在徐州、淮阴,盐城等市黄河故道地区,栽培面积22万亩,年产苹果135万余担.但在苹果生长季中,高温多雨,苹果炭疽病为害十分严重,常年损失产量20—40%.病害流行年份小国光、鸡冠、红绞等易感病品种损失高达90%以上,即使采收时的好果,贮藏期仍陆续发病可达51.5%。? Most of the apple in our province are distributed in the old course of the Yellow River in Xuzhou, Huaiyin, Yancheng and other cities. The cultivated area is 220,000 mu with an annual output of more than 1.35 million apples. However, during the apple growing season, the crops are very hot and rainy, causing serious damage to apple anthracnose and perennial losses Production 20-40%. Disease epidemic Year Guoguang, Cixi, red twisted and other susceptible varieties of loss up to 90% or more, even when the harvest of good results, the storage period is still up to 51.5% incidence. ?