%0 Journal Article
%T Effects of mono- and mixed culture on the grain yield and water use efficiency of two winter wheat cultivars<br>单播与混播对两个冬小麦品种产量和水分利用效率的影响
%A LIU Lin
%A LI Feng-min
%A XU Bing-cheng
%A MA Shou-chen
%A LIU Wen-zhao
%A <br>刘琳
%A 李凤民
%A 徐炳成
%A 马守臣
%A 刘文兆
%J 应用生态学报
%D 2008
%I 
%X Taking two winter wheat (Triticum aestivum L.) cultivars Changwu 135 and Pingliang 40 commonly cultivated in the semi-arid area on Loess Plateau as test materials, and by the method of ecological replacement, a 2-year field experiment was conducted to study the effects of mono- and mixed culture on the grain yield and water use efficiency of the cultivars. The results showed that under mono-culture, Pingliang 40 had a much higher unit area root biomass (367.60 g x m(-2)) than Changwu 135 (297.31 g x m(-2)), and a more uniform root distribution (i.e., a better root type for water absorption), but its grain yield and water use efficiency were lower than Changwu 135. Under mixed culture, the population root biomass of Pingliang 40 and Changwu 135 was 13.36 g * m(-2) and 8.50 g x m(-2) higher than that under mono-culture, respectively, suggesting that mixed population could absorb the water in deeper soil layers, and had higher total unit area biomass, which in turn increased the water use efficiency. Comparing with Pingliang 40, Changwu 135 allocated more dry matter to its productive organ, leading to its higher grain yield, harvest index, and water use efficiency.
%K winter wheat
%K yield
%K water use efficiency
%K mono-cuhure
%K mixed culture<br>冬小麦
%K 产量
%K 水分利用效率
%K 单播
%K 混播
%K 单播
%K 混播
%K 冬小麦
%K 品种产量
%K 利用效率
%K 影响
%K cultivars
%K winter
%K wheat
%K water
%K use
%K efficiency
%K grain
%K yield
%K mixed
%K culture
%K 表现
%K 收获指数
%K 籽粒产量
%K 生物量
%K 营养器官
%K 繁殖器官
%K 干物质
%K 分配
%K 群体
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=3BD71352D38B81675C3F62110FE9D29F&yid=67289AFF6305E306&vid=2A8D03AD8076A2E3&iid=CA4FD0336C81A37A&sid=39EEF47180459690&eid=10F298ED9F164662&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=0&reference_num=21