豫北玉米田杂草群落结构及多样性动态  

Weeds Community Construction and Diversity of Corn Field in the North of Henan Province

作　　者：张爱芹[1] 樊学民 

机构地区：[1]安阳工学院,河南安阳455000 [2]内黄县农牧局,内黄456300

出　　处：《中国农村小康科技》2007年第8期55-57,88,共4页Chinese Countryside Well-off Technology

基　　金：国家农业科技成果转化基金:"优质高产玉米新品种郑单958;郑单18示范及其配套技术研究"(02EFN214100384).

摘　　要：采用倒置“W”取样法对豫北玉米田杂草进行了调查,以明确田间杂草的种类组成及群落结构。结果表明,豫北玉米田主要杂草有17种,隶属于10个科,其中优势杂草有马唐、马齿苋、狗尾草等。在玉米生长季节中,物种丰富度随时间而增加,多样性呈现先期增加而后期减少的规律性变化。Field weeds survey was conducted using an inverted W-pattern with 9 sampling points in the North of Henan Province. 17 species belonging to 10 families were recorded in corn fields. Among them, predominance weeds are Digitaria sanguinalis （L.） Seop, Portulaca oleraeea L.ae, Setaria virdis （L.） Beauv and so on. Abundance of weeds species is increasing in the growth season of corn. Index of diversity increases in the early days and decreases in later period.

关 键 词：玉米 杂草 群落结构 多样性 

分 类 号：S451.223[农业科学—植物保护]