野燕麦(Avana fatua L.)是我省农田恶性杂草,分布广适应性强、密度大、出苗不整齐。幼苗期与小麦不易区别,加之繁殖率高、种子随成熟随脱落,极难防除。野燕麦的大量滋生,严重影响了作物的生长发育,导致减产歉收。1967年以来,我们先后在河西走廊的玉门、武威、嘉峪关、永昌等地,应用燕麦畏(triallate)与燕麦敌(diallate)等除草剂,进行防除野燕麦的试验研究,最初几年在播后苗前讲行土壤处 Wild oats (Avana fatua L.) is a malignant weed farmland in our province, widely distributed and adaptable, high density, irregular emergence. Seedling and wheat is not easy to distinguish, combined with high reproductive rate, the seeds with the off with the mature, very difficult to control. Large numbers of wild oats breed, seriously affecting the crop growth and development, resulting in reduced yield. Since 1967, we have conducted experimental studies on the control of wild oats using herbicides such as triallate and diallate in the Yumen, Wuwei, Jiayuguan and Yongchang areas of the Hexi Corridor. Post-levee line soil before