我省稻田的稗草(Echinochloa ssp.)主要有:稗[Echinochloa crusgalli(L.)Beauv.](又可分长芒,短芒,无芒)、孔雀稗[E.crus-pavonis(H.B.K.)Schult.]、老头稗[E.colonun(L.)Link]等类型.据1980年睢宁县调查,全县稻田有稗草危害的面积占81.7%.同年在苏州横塘公社新丰大队调查,稗草危害面积占水稻总面积的50%以上.由此可以看出其危害严重性的一斑.从1975年起,对秧田稗草的发生规律,稗草的发生预测及防除方法进行了研究.采取盆钵和田间试验相结合的方式,观察稗草种 Echinochloa ssp. From paddy fields in our province mainly include: Echinochloa crusgalli (L.) Beauv. E.colonun (L.) Link] and other types.According to Suining County survey in 1980, the county rice field with barnyard grass damage accounted for 81.7% of the same year in Suzhou Hengtong commune Xinfeng brigade survey, The damage area of ​​barnyard grass accounted for more than 50% of the total area of ​​rice, which can be seen the severity of its damage from 1975 on the law of seedling barnyard grass production of barnyard grass prediction and control methods were studied. The combination of pots and field trials to observe the barnyard grass species