白湖圩区春玉米田杂草种类调查

The Investigation of Kinds of Weeds in Spring-maize Field in Baihu Area

田间普查和定点观察表明 ,白湖圩区春玉米田杂草共有 19科 5 7种 ,其中菊科、禾本科、莎草科、苋科杂草较多 ,分别占总数的 15 .8%、14 .0 %、8.8%。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。上述杂草为该区当前防治重点。

Main species of weeds in spring-maize in Baihu area were studied through the investigation and there were weeds from 57 species in 19 families such as composite(15.8%), cereal(14.0%), sedge(8.8%) and flower gentle family. There were ten kinds of weeds including Digitaria sanguinalis (L.) Scop., Elusine indica (L.) Gaertn., Echinochloa crusgalli var. hispidula (Retz.) Honda ex Ohwi, Cyperus rotundus L., Acalypa australis L.and the weeds mentioned above should be controlled in the area.