我区麦类作物上的蚜虫有麦二叉蚜、麦长管蚜、麦缢管蚜等三种,均为小麦黄叶病的传毒介体.为了帮助各地当前作田间调查时易于识别起见,现将这三种蚜虫的识别要点介绍于后,供各测报点同志在田间用肉眼(或手持扩大镜)观察识别时参考. Aphids on wheat crops in our district are wheat Aphis gossypii, wheat aphid, Aphis gossypii, etc. They are all the drug-mediated mediators of wheat yellow leaf disease.In order to facilitate the current identification of field investigation Now these three kinds of aphids are introduced in the identification of points for the reporting point comrades in the field with the naked eye (or hand-held magnifying glass) to observe and identify the reference.