苹果斑点落叶病的发生与防治斑点落叶病主要发生在展叶不久的嫩叶上，１年生彼及果实各个生长发育期都能受害，危害严重的果园叶片几乎落光，导致二次开花。苹果品种间受害程度有一定差异，同园、同期调查，新红星发病率９０．２％，红富士为８９．６％，国光仅２８．６％... Occurrence and control of apple spotted leaves deciduous disease occurs mainly in the leaves of young leaves soon, perennial peel and fruit growth and development of all can be harmed, orchard endangered leaves almost fall, leading to the second flowering. Apple varieties have a certain degree of victimization differences, with the Park, the same period of investigation, the incidence of new Red Star 90.2%, 89.2% Red Fuji, only 28.6% Guoguang ...