苹果叶螨(苹果全爪螨)是危害果树的主要害螨,近两年在许多果区逐年回升并暴发成灾,尤其在7~8月份多数果园普遍发生严重危害,对果树的生长结果均有很大影响。为此,我们对近年苹果叶螨逐年回升的原因进行了调查分析。前期防控不力在山东招远果区,2007年苹果叶螨发生 Apple spider mites (apple mites) is the main pest mite harmful to fruit trees, the past two years in many fruit areas rebound and outbreaks year after year, especially in July or August most of the orchard widespread serious harm to the growth of fruit trees were have a great impact. To this end, we conducted a survey and analysis of the reasons that apple spider mites rebound year by year in recent years. Poor prevention and control in the early Zhaoyuan fruit areas in Shandong, 2007 apple spider mite occurred