60年代,毒麦在各地的发生危害,曾引起农业部门的重视,开展了有效的防除,使之得到基本控制。但随后10多年,对毒麦的防除有所放松,至80年代初,毒麦的发生与危害加重,近几年来,有的地区毒麦发生率达到2％以上。毒麦以种子繁殖,在土内10厘米深处尚能出土,在室内贮藏两年仍有萌芽力。毒麦分蘖力较强,一般可有4～9个分蘖。适应性较强,能抵抗不良环境,不论旱年或涝年,繁殖力 In the 1960s, poisonous wheat was harmed in various places and caused great attention from the agricultural sector. Effective prevention and control have been carried out so that it can be basically controlled. However, over the next 10 years, the prevention and control of poisonous wheat was somewhat relaxed. By the early 1980s, the occurrence and harm of poisonous wheat increased. In recent years, the incidence of poisonous wheat in some areas has reached over 2%. Toxic wheat to seed breeding, soil can be unearthed in the depth of 10 cm, two years in the indoor storage is still sprouting. Toxicity of wheat poisoning strong, generally can have 4 to 9 tillers. Strong adaptability, able to resist adverse environment, regardless of dry years or flood years, fertility