野燕麦(Arena fatua L.)是世界性的难治害草之一,也是我国北方农田中的主要恶性杂草。据统计,全国已有23个省(区)6000多万亩农田遭受其害,每年损失粮食约20亿斤。近几年来,野燕麦的发生范围又有所扩展,有继续由西向东,从北向南蔓延的趋势。1960年以前陕西省农田中极少见到野燕麦,从1965年以后野燕麦逐渐扩展蔓延,至今全省已有20多个县、市,约980万亩农田发生,每年损失粮食在1亿斤左右。 Wild oats (Arena fatua L.) is one of the world’s refractory grass, but also the main malignant weeds in farmland in northern China. According to statistics, more than 6 million mu of farmland in 23 provinces (regions) across the country have suffered from the loss of about 2 billion jin of grain each year. In recent years, the scope of wild oats has expanded, with the trend of continuing from west to east and from north to south. Before 1960, wild oats were seldom seen in the farmlands of Shaanxi Province. Since 1965, wild oats have gradually spread and spread. Up to now, there have been more than 20 counties and cities in the province with an area of ​​about 9,800,000 mu of farmland, with an annual loss of 1 billion pounds of grain about.