用田间普查和定点观察的方法,研究了皖江白湖圩区春玉米田杂草的主要种类、群落组成和发生规律。本区杂草共有19科57种,主要杂草有10种,其中马唐、牛筋草、旱稗、香附子、铁苋菜为优势种。主要杂草群落有6种。在玉米生育期内有2个出草高峰,分别在播后55d和95d;阔叶杂草的发生明显呈双峰型,而禾草、莎草为单峰型。春玉米田杂草发生与降雨量有明显的关系。 By field surveys and fixed-point observation, the main species, community composition and occurrence of weeds in the spring maize field in the Baihu polder area of ​​Wanjiang River were studied. The area weeds a total of 19 families and 57 species, the main weeds have 10 species, including crabgrass, tendon grass, barnyardgrass, Cyperus rotundus, iron amaranth dominant species. There are 6 main weed communities. There were 2 grass-setting peaks during the maize growth period, which were 55 days and 95 days after sowing. The occurrence of broad-leaved weeds was obviously bimodal, while that of grass and sedge was unimodal. Spring corn field occurrence of weeds and rainfall have obvious relations.