研究了皖江圩区春玉米田杂草的主要种类、群落组成、发生规律和化学除草技术。在 19科 5 7种杂草中 ,主要杂草有 10种 ,其中马唐、牛筋草、旱稗、香附子、铁苋菜构成优势种 ;主要杂草群落有 6种。玉米在生育期内有 2个出草高峰 ,分别出现在播后 5 5和 95天。研究表明 ,乙草胺、草杀胺、莠去津均具有良好的除草效果 ,是该区适宜的玉米田除草剂品种。最后对该区春玉米田杂草防除提出了建议 The main species, community composition, occurrence law and chemical weeding technology of weeds in spring maize field in polder area of ​​Wanjiang were studied. Among 19 families and 57 weeds, there are 10 main weeds, of which Crabgrass, Leghorngrass, Adenophora, Cyperus rotundus, Eruca amabilis constitute the dominant species; there are 6 main weed communities. Corn has two grassroots peaks during the reproductive period, occurring at 55 days and 95 days after sowing. Studies have shown that acetochlor, oxacillin, atrazine have a good herbicidal effect, is the appropriate cornfield herbicide varieties. Finally, we put forward some suggestions on weed control in the spring maize field in this area