果树喷施农药,既防治病、虫、杂草的危害,又能促进果树的生长发育,提高果品产量和质量。如果用药浓度过高或药液混合不均匀、药剂混用不当、施药时期和方法不对、在恶劣气候条件下喷药或对耐药性差的树种、品种施药,不仅不能发挥作用,反而会对果树造成药害。轻者 Pesticide spraying fruit trees, both to prevent disease, insects, weeds, but also to promote the growth and development of fruit trees and improve fruit production and quality. If the drug concentration is too high or the drug mixture is not uniform, improper drug mixing, spraying time and method is not right in the harsh climatic conditions or poor resistance to species of trees, varieties of pesticides, not only can not play a role, but will Fruit trees cause phytotoxicity. Light