%0 Journal Article
%T SIGNIFICANCE AND METHOD OF STUDIES ON WEED NICHE IN CROP FIELDS<br>农田杂草生态位研究的意义及方法探讨
%A Guo Shuiliang
%A <br>郭水良
%J 生态学报
%D 1998
%I 
%X Long term application of a certain herbicide let a variation of weed populations in crop fields.It increases the difficulty controlling weeds effectively.Therefore,it is a hot problem for us to solve.Studies on the niche of weeds in crop fields can reveal the ecological demand similarity of different weeds.It can be applied to predict the change trend of crop weed community on the basis of the references about the sensitivity of various weeds to the herbicide applied.In this paper,the rape fields of Middl...
%K rape fields
%K niche
%K weed
%K minimal spanning tree
%K ordination<br>油菜田
%K 生态位
%K 杂草
%K 最小生成树
%K 排序
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=952C657730231FEED402920726A2C9BC&yid=8CAA3A429E3EA654&vid=13553B2D12F347E8&iid=94C357A881DFC066&sid=C4490A71BEB872FA&eid=9296A146D1D94BC4&journal_id=1000-0933&journal_name=生态学报&referenced_num=26&reference_num=9