苹果、梨轮纹病危害果实造成烂果,危害枝干造成粗皮。近几年局部果区一些感病品种枝干普通发病。造成树势衰弱,枯枝,死树乃至毁园。多雨年份果实发病严重。病果率达30～40％,个别果园造成绝产。 1.症状 苹果、梨轮纹病是真菌性病害,当病原菌侵入以后均有或长或短的潜育期。一般潜育80～150天,最短18～20 Apples, pears rot disease caused by rotten fruit, causing damage to the branches of rough skin. In recent years, some susceptible varieties of fruit trees in some common incidence. Caused by frail trees, dead branches, dead trees and even destroy the park. Rainy season, the incidence of serious fruit. Disease rate of 30 to 40%, resulting in some individual orchards. 1. Symptoms Apple, pear wheel disease is a fungal disease, when the pathogen invade after both long or short incubation period. General incubation of 80 to 150 days, the shortest 18 to 20