分布与发生情况小麦吸浆虫在西北很普遍,分布于陕、甘、宁、青四省,其中所有冬小麦与春小麦皆遭为害,而发生严重的有下列几种情况:1.河洼低湿地区,如陕西沿渭河的盩厔、鄠县、咸阳、华县、万阴、渭南等,沿黄河的韩城、潼关,沿汉水的城固、南郑。在甘肃如沿黄河之永靖、皋蓝,沿洮河之临洮,沿煌水之河口,沿渭水之天水、甘谷等。在青海沿煌水有西宁、乐都、民和,沿 Distribution and Occurrence Wheat Midge is very common in northwestern China and is distributed in Shaanxi, Gansu, Ningxia and Qinghai provinces. All of the winter wheat and spring wheat are harmed, while the most serious cases are as follows: 1. Along the Weihe River in Shaanxi along the Qionglai, Pixian, Xianyang, Huaxian, Wan Yin, Weinan and so on along the Yellow River in Hancheng, Tongguan along the Han River City solid, Nanzheng. In Gansu, such as Yongjing along the Yellow River, Gao blue, Lintao along the river, along the Huang River estuaries, Tianshui along the Wei River, Gangu and so on. Along the Yellow River in Qinghai Xining, Ledu, Minhe, along