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据调查 ,果园里天敌很多 ,从果园里捕捉的害虫 ,经饲养许多不能培养成虫（大都被天敌寄生所致）。因此 ,应调查天敌密度 ,酌情减用或不用农药。从目前情况看 ,对果园中的苹果（不套袋）和桃（套袋） ,除每年７月中、下旬喷洒１～２次硫酸烟碱（防治食心病）外 ,其他杀虫剂原则
According to the survey, there are many natural enemies in orchards. Pests that are caught from orchards can not be cultivated by many adults (mostly caused by parasites). Therefore, natural enemies should be investigated for their density, with or without pesticides as appropriate. Judging from the current situation, the apple (not bagging) and peach (bagging) in the orchard, in addition to the mid-July and late July each sprayed with 1 to 2 times nicotine sulfate (control of carnpenic disease), the other pesticide principles