90年代以来,日照市东港区大力推广了苹果套袋技术,取得了较好的经济效益,但同时也发现,套袋红富士的果面上出现了许多类似痘斑病的病斑,严重的园片病果率高达54%,且有逐年加重的趋势,成为套袋苹果生产的一大障碍。该病目前只在果实上发生。有的在苹果着色时就已表现症状,... Since 90’s, Donggang District, Rizhao City, vigorously promote the apple bagging technology, and achieved good economic benefits, but also found that the bagged red Fuji fruit surface appeared a lot of spots similar to spot disease, serious Park disease rate as high as 54%, and there is a trend of increasing year by year, a bag of apple production as a major obstacle. The disease is currently occurring on fruit only. Some have shown symptoms when the apple coloring, ...