常州市金坛区小麦田杂草发生危害情况调查研究

Investigation of Occurrence and Hazards of Main Weeds in Wheat Fields of Jintan District in Changzhou City

为揭示常州市金坛区稻茬小麦田杂草组成、发生危害特点,于2014年5月调查不同区域、不同管理措施的90块小麦田。结果显示:金坛地区小麦田有16科25属28种杂草,其中外来入侵杂草6种;优势杂草种为日本看麦娘(Alopecurus japonicus)、菵草(Beckmannia syzigachne)、看麦娘(A.aequalis)、猪殃殃(Galium aparine var.tenerum)、大巢菜(Vicia sativa)和泥胡菜(Hemistepta lyrata)。经查考资料,太湖稻—麦轮作区从20世纪90年代开始,小麦田杂草日本看麦娘、菵草发生危害程度和对除草剂的抗性逐步上升,并成为发生数量最大、危害最重的杂草。

To reveal weed composition,occurrence characteristics in wheat fields under rice-wheat cropping system of Jintan District in Changzhou City,a survey of 90 wheat fields belonging to different regions,different management measures was conducted of May 2014. The results showed that：there were 28 species,25 genera belonging to 16 families in Jintan wheat fields,including 6 invasive weeds. The dominant weeds were A lopecurus japonicus ,Beckmannia syzigachne ,A. aequalis ,Galium aparine var. tenerum, V icia sativa,Hemistepta lyrata, After searching the data, from the beginning of the 1990s,the occurrence and resistance to herbicides of A Iopecurus japonicus and Beckmannia syzigachne in Taihu rice-wheat cropping area wheat field was gradually increased, and became the largest number occurred, endangering the heaviest weeds.