苹果树腐烂病是我国苹果产区的主要病害。在一般情况下发病率在20—40%,发病严重的果园,发病率高达90%以上,可导致死树、毁园。因此,研究防治苹果树腐烂病,已成为当前急待解决的一个重要问题。由于苹果树腐烂病发病因素复杂,病原菌具有潜伏侵染特性等原因,很难杜绝此病不发生。在病害发生后,目前国内外一直沿用刮治的办法。此法虽有一定的防治效果, Apple tree rot disease is the main disease of apple producing areas in our country. In general, the incidence of 20-40%, the incidence of serious orchards, the incidence of up to 90%, can lead to dead trees, destroy the park. Therefore, research on the prevention and treatment of apple tree rot has become an important issue to be solved urgently. Due to the complex pathogenesis of apple tree rot disease, pathogenic bacteria with latent infection characteristics and other reasons, it is difficult to put an end to the disease does not occur. After the occurrence of the disease, the current cure both at home and abroad has been used. Although this method has some control effect,