二班叶螨近年来已成为我国落叶果树上发生为害的重要害螨。自笔者１９９３年首次报道该螨在我国部分地区个别果园为害苹果等果树以来，短短几年的扩散蔓延，据不完全统计，全国仅在落叶果树上发生面积已达２７万ｈｍ２。明确该螨对常用杀螨剂的敏感水平，是目前生产上亟待解决? Two spider mite in recent years has become the deciduous fruit trees in our country an important pest damage. Since the author first reported in 1993 that the mites in some parts of China damaged fruit apple orchards since a few years, spread spread just a few years, according to incomplete statistics, the country only occurred in deciduous fruit trees area reached 270,000 hm2. Clear the mite commonly used acaricide sensitive level, is the current production to be solved?