1996年我们在陕西省礼泉、乾县、眉县、周至等县果产区首次发现二斑叶螨为害,这是继80年代末到90年代初先后在北京、山东、辽宁、甘肃天水地区为害花卉、果树之后,又一新的发现,也是在陕西省果产区首次发现该螨为害。 二斑叶螨(Tetranychus urticae koch)发生世代多,繁殖力强,对现有大部分杀螨剂有抗药 In 1996, we found that two-spotted spider mites were the first to be found in the fruit producing areas of Liquan, Qianxian, Meixian, Zhouzhi and other counties in Shaanxi Province. This is the second consecutive case of spider mite infestation in the fruit producing areas of Beijing, Shandong, Liaoning and Gansu Tianshui in the late 1980s and early 1990s Harmless flowers, fruit trees, after a new discovery, but also in Shaanxi Province fruit producing area for the first time found the mite damage. Two-spotted spider mite (Tetranychus urticae koch) occurs more than a generation, strong reproductive ability, most of the existing acaricides resistant