野燕麦（AvenafatuaL．）是世界性的难治草害之一。野燕麦适应性强，繁殖量大，难于防除，很容易蔓延成灾，对小麦生产造成严重威胁。１野燕麦在冬小麦田的发生特点１）出苗期长。冬小麦田野燕麦出苗有２个主要时期：一是秋季出苗期，主要在小麦播种之后，于１０月中旬至１１月 Wild oats (Avenafatua L.) is one of the world’s refractory pests. Wild oats adaptable, breeding large, difficult to control, it is easy to spread into disasters, causing serious threat to wheat production. Occurrence characteristics of wild oats in winter wheat 1) the emergence of a long period. Winter wheat field oat emergence of two major periods: First, the fall of the seedling stage, mainly after sowing in wheat, in mid-October to November