苹果银叶病是一种毁灭性病害,50年代后期在我国黑龙江、河南、河北、山东、山西、安徽、江苏、上海、浙江、湖北、四川、贵州、云南、甘肃等地均有发生。银叶病不仅危害苹果树,还危害桃、杏、李、樱桃、枣、梨等果树。目前,银叶病已成为江苏、河南、安徽等省黄河故道地区苹果树的重要病害。 Apple leaf blight is a devastating disease. In the late 1950s, it occurred in Heilongjiang, Henan, Hebei, Shandong, Shanxi, Anhui, Jiangsu, Shanghai, Zhejiang, Hubei, Sichuan, Guizhou, Yunnan and Gansu in China. Silver leaf disease not only endanger apple trees, but also endanger peach, apricot, plum, cherry, jujube, pear and other fruit trees. At present, silver leaf disease has become an important disease of apple trees in the old course of Yellow River in Jiangsu, Henan and Anhui provinces.