由于小麦品种频繁串换等诸多因素 ,近几年江苏丰县麦田杂草发生呈现三大特点 :阔叶草优势种显著改变 ;禾本科恶性杂草面积和种类剧增 ;多数禾本科杂草群落组成呈现明显的区域性分布。为了有效控制麦田草害 ,必须采取加大统一供种力度、严格检疫、推广轮作灭草等农业防治措施及开展高效安全的化学除草等一系列综合治理对策 Due to frequent crosstalk of wheat varieties and other factors, weeds in Fengxian County of Jiangsu Province in recent years showed three major characteristics: the dominant species of broad-leaved grass significantly changed; gramineous weed area and species increased dramatically; the majority of grass weeds community composition Significant regional distribution. In order to effectively control the wheat grass damage, we must take a series of measures to increase the intensity of unified supply, strictly enforce the quarantine, promote the prevention and control measures such as rotation and weeding, and carry out a series of comprehensive control measures such as chemical weeding which is efficient and safe