众所周知,使用化学农药防治病虫害,具有经济、省工、见效快的优点。因此,目前在防治果树病虫害的各种方法当中,化学农药防治占有很重要的地位。但是,化学农药是毒剂,如果使用不当或滥用就会影响药效,或使果树发生药害,甚至造成植株死亡或人畜中毒 As we all know, the use of chemical pesticides to control pests and diseases, with economic, labor-saving, quick advantage. Therefore, among the various methods for preventing and controlling pests of fruit trees, chemical pesticide control occupies a very important position. However, chemical pesticides are toxic agents, which can affect their efficacy if used improperly or abuse them, cause phytotoxicity to fruit trees and even cause plant death or poisoning of human and animal beings