白绢病是苹果根部的主要病害,这种病害的发生是造成果园缺株的主要原因。最近几年,我镇尝试用根茎包草木灰的方法进行防治,取得了较好的效果,防治率达到100％。 1.防治原理 白绢病在根茎处发病,感病面积比较小,完全可以用一定量的草木灰包裹住。其病菌在呈弱碱性的草木灰中不能存活。所以用草木灰把根茎 Sclerotium is the main disease of apple root, the occurrence of this disease is the main reason for the lack of orchard. In recent years, my town try to use rhizome package ash method of prevention and treatment, and achieved good results, prevention and treatment rate of 100%. 1. Prevention and treatment of Sclerotinia in the rhizome at the onset of flu area is relatively small, can be wrapped with a certain amount of ash. The bacteria in weakly alkaline ash can not survive. So with ash to rhizomes