对病虫害采取预防为主,综合防治的措施,在生产实践中还没有引起人们足够的重视。我场过去苹果树每年打药7～8次,由于连年大量不合理的使用剧毒农药,使害虫抗药性增强,并大量杀伤天敌,破坏了果园的生态平衡,导致害虫更加猖獗。多年来,根据这些经验教训,我们结合实际工作,对全场各园的病虫害概况和天敌资源进行全面调查,提出对苹果主要害虫进行综合防治措施。经过连续八年多点小面积(60～600亩),重复对比试验和九年大面积(9920亩)反复防治实践,均收到成效。现将情况介绍如下。一、主要病虫害为害概况我场在推行综合防治以前,苹果树的病虫害种类多,发生数量大,为害严重。1961年腰沟 Preventive measures against pests and diseases, comprehensive prevention and control measures have not drawn sufficient attention in production practice. In the past, we used 7-8 times a year to fight the apple trees. Due to the unreasonable use of highly toxic pesticides in successive years, the resistance of pests increased and the natural enemies were massively destroyed. The ecological balance of the orchards was destroyed, causing the pests to become more rampant. Over the years, based on these experiences and lessons, we conducted a comprehensive investigation of pest and disease status and natural enemy resources in various parks in the field and proposed comprehensive prevention and control measures for major apple pests. After more than eight years of small area (60 ~ 600 acres), repeated comparative tests and nine years of large area (9920 acres) repeated prevention and treatment practices, have received results. Now the situation is as follows. First, the main pest damage profile My field in the implementation of integrated control before the apple tree pests and diseases, the occurrence of large quantities, serious damage. 1961 waist groove