看麦娘(Alopecurus aequalis So-bol.)是为害稻茬麦的优势种杂草。过去在我市河旁、沟渠边及洼地零星发生,后因耕作制度的改变而蔓延成灾。目前发生面积达10万亩,分布于20多个乡(镇)。小麦一般减产30％,严重的60％以上,全市仅稻麦轮作区,每年约减产小麦1300万公斤,经济损失达450万元。1982—1984年,作者对看麦娘生物学特性及其化除技术进行了观察和研 Alopecurus aequalis So-bol. Is a dominant species of weed that affects rice stubble. In the past in our city river, ditch edge and depression occurred sporadically, after farming system changes and spread disaster. The current area of ​​100,000 mu, distributed in more than 20 townships (towns). The general reduction of 30% of wheat, a serious 60% or more, the city only rice rotation area, about 13 million kilograms of wheat output reduction each year, the economic losses of 4.5 million yuan. From 1982 to 1984, the author observed and studied the biological characteristics and its technology of removing maidenhair