麦长管蚜是宁夏引黄灌区和宁南川水地小麦的主要害虫,除传播黄矮病外,有些年份直接危害也很严重。由于麦蚜繁殖率高,蔓延速度快,大发生年有蚜株率可达90%以上,一穗有虫数十头,严重的田块植株提早枯死,籽粒秕瘦,产量降低。故掌握麦蚜数 Aphis gossypii is the main insect pest of Ningxia Yellow River Irrigation Area and Ningnan River water, in addition to the spread of yellow dwarf disease, in some years the direct harm is also very serious. Due to the high reproductive rate of wheat aphid and its rapid spread, the annual occurrence rate of aphid in large occurrence can reach more than 90%. There are dozens of spikes in a spike, and the serious field plants die early, the grain is thin and the yield is reduced. So master the number of wheat aphids