扬州市麦田草相特点及杂草防除对策

为了摸清扬州地区麦田杂草种类、分布状况，通过倒“W”形九点取样法调查，结果表明麦田杂草有26科81种，其中里下河地区优势种为日本看麦娘、牛繁缕、菵草等；沿江地区优势种为菵草、日本看麦娘、牛繁缕等；丘陵山区优势种为日本看麦娘、猪秧秧、野老鹳等；同时发现当前存在着杂草抗药性增强、防治技术不到位等方面问题，提出了强抓土壤封闭处理、合理选用除草剂及开展技术宣传培训等对策。

Weed Characteristics and Control Strategies in Wheat Fields in Yangzhou City

Weed species and their distribution in wheat fields in Yangzhou area were determined by sampling nine plots according to a“W” pattern.Weeds belonged to 81 species of 26 families.The dominant species in Lixiahe region and the area along the Yangtze River were Alopecurus japonicus Steud.,Malachium aquaticum （ L.） Fries., and Beckmannia syzigachne （ Steud.） Fernald, whereas A.japonicus Steud.,Galium aparine L.and Geranium carolinianum L.were dom-inant in hilly areas.Currently,problems with herbicide resistant weeds are becoming more serious and outdated control technologies must be improved.Therefore,a series of control strategies are proposed including improving the use of resid-ual soil applied herbicides,judicious selection of herbicides and carrying out technical outreach and training.