%0 Journal Article
%T Allelopathy and resources competition of rice under different nitrogen supplies<br>不同供氮条件下水稻的化感抑草作用与资源竞争分析
%A XIONG Jun
%A LIN Wenxiong
%A ZHOU Junjian
%A WU Minhong
%A CHEN Xiangxu
%A HE Huaqin
%A GUO Yuchun
%A LIANG Yiyuan
%A <br>熊君
%J 应用生态学报
%D 2005
%I 
%X In order to explore the bio-interference of allelopathic rice with barnyardgrass under different nitrogen supplies,a new bioassay method,i.e.,allelopathy-competition separation based (ACS) approach was recommended in this study.The results indicated that ACS could be successfully used to distinguish the rice allelopathy from its resources competition in rice-weed co-culture system,and to evaluate its response characteristics under different N supplies.The test rice accession PI312777 had a higher ability in interfering target weed barnyardgrass (BYD),represented by its stable and higher ability in resources competition,as well as its increasing allelopathic potential in suppressing companion weed BYD when the N supply decreased in the co-cultured system.The reverse was true in the case of rice accession Lemont,which had a lower allelopathic potential under all N supply levels,and a lower ability in resources competition under normal or rich N supply.But,Lemont had an obviously increased ability in resources competition under lower N supply,which was considered as the result of econiche competition in rice-weed system.
%K Oryza sativa
%K Allelopathy
%K Resources competition
%K Nitrogen stress
%K Econiche
%K Allelopathy-competition separation based bioassay (ACS)<br>水稻
%K 化感作用
%K 资源竞争
%K N胁迫
%K 生态位
%K 化感
%K 竞争分离法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=1CB8103A508A9F78&yid=2DD7160C83D0ACED&vid=7801E6FC5AE9020C&iid=94C357A881DFC066&sid=745C7FAEA69986C7&eid=BF6EDE6C10074464&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=12&reference_num=23