山东省五莲县各果园中,圆斑根腐病是 为害果树根部的主要病害.以为害苹果、梨、 桃、杏、葡萄、核桃、柿、枣、山植等果树 为主,尤其是在春旱缺肥管理粗放的园片及 土壤板结、结果过量、大小年严重的果园发 病较重。在苹果品种中发病顺序为:红富士 金冠元帅系国光,间作物中 Among the orchards in Wulian County of Shandong Province, the root blight rot is the main disease that damages the roots of fruit trees and mainly affects the fruit trees such as apple, pear, peach, apricot, grape, walnut, persimmon, date, Spring drought and lack of fertilizer extensive management of the land and soil compaction, the result is excessive, the size of serious serious orchards heavier. The incidence of apple varieties in the order as follows: Red Fuji Golden Delicious marshal Guoguang, intercropping