黑麦秆蝇(Oscinella pusilla Meigen)又名燕麦蝇、瑞典麦秆蝇,它在新疆、宁夏和我区乌拉特前旗等地均有为害小麦的资料记载。后山地区近几年来随着水地小麦栽培面积的扩大,黑麦秆蝇为害小麦的问题也逐渐引起人们的关注。对此,我们从1976年开始,在我县范围內进行了黑麦秆蝇越冬和为害小麦情况调查。一、黑麦秆蝇在碱草上的越冬情况 Oscinella pusilla Meigen, also known as oatfly, Sweden straw flies, it is in Xinjiang, Ningxia and Wulateqianqi and other places are harmful wheat records. In recent years, with the expansion of cultivated area of ​​water wheat in the mountainous area, the problem of rye-flies damaging wheat has also drawn people’s attention. In this regard, we started in 1976, carried out in my county over the winter rye stalk flies and wheat damage survey. First, rye stalk flies in the soda on the winter conditions