1976年6月初,我们在万县地区农科所的稻田内发现一种为害稻叶形似半边小油菜籽的甲螨。同时在附近的农校农场、公社及开县、梁平等县的杂交水稻上也都有不同程度的发生和为害。 受害叶片,端部枯黄,叶缘向内卷合,数十个害螨集中于稻叶的黄、绿交界处取食。随着害螨的不断为害,黄叶部分加长。特别在稻苗返青至分蘖初期,黄叶 In early June 1976, we found a type of mite that infects the half-size rapeseed in rice leaves in the paddy fields of the agro-science institutes in Wanxian Prefecture. At the same time in the vicinity of farm school farms, communes and Kaixian, Liangping County hybrid rice also have varying degrees of occurrence and damage. Damaged leaves, the end of the yellow, leaf edge inward coiling, dozens of pest mites focus on rice leaves yellow, green junction feeding. With the continuous damage of pest mites, yellow leaves part of the lengthening. Especially in the early maturing of rice seedlings tiller, yellow leaves