腐烂病、干腐病是苹果、梨等果树常见的枝干病害 ,具有发病率高、发生区域广、难以控制的特点。生产实践中 ,多采用刮皮、划道涂药的方法防治。由于果园长年大量使用福美砷、843康复剂、菌速清等含砷制剂 ,造成土壤环境及食物链的污染。因此 ,研制新型无公害农业化学制品势在必 Rot disease, dry rot is apple, pear and other fruit trees common branch disease, with a high incidence, the occurrence of a wide area, difficult to control characteristics. Production practice, and more use of scraping the skin, apply the method of control. Due to heavy use of orchards for many years, Fumei arsenic, 843 rehabilitation agents, such as bacteria speed clear arsenic-containing agents, resulting in soil environment and food chain pollution. Therefore, the development of new pollution-free agricultural chemicals is imperative