Spring wheat performance and water use efficiency on permanent raised beds in arid northwest China

文献类型： 外文期刊

第一作者： He, Jin

作者： He, Jin;Li, Hongwen;Wang, Qingjie;Zhang, Xuemin;Zhang, Xirui;Mchugh, A. D.;Ma, Zhongmin;Cao, Xinhui

作者机构：

关键词： bed planting;yield;water content;soil temperature;irrigation;arid areas

期刊名称：AUSTRALIAN JOURNAL OF SOIL RESEARCH （ 影响因子：3.443； 五年影响因子：2.179 ）

ISSN： 0004-9573

年卷期： 2008 年 46 卷 8 期

页码：

收录情况： SCI

摘要： Permanent raised beds have been proposed as a more productive and water-efficient alternative to the conventional system of. at,. ood-irrigated bays for planting narrow-spaced crops in arid north-west China. Data from a field experiment (2005-2007) conducted in the Hexi Corridor at Zhangye, Gansu Province, China, were used to compared the effects of traditional tillage (TT), zero tillage (ZT), and permanent raised beds (PRB) on crop growth, yield, and water use in a spring wheat monoculture. The results show that PRB significantly (P < 0.05) increased soil water content to 0.30m depth by 7.2-10.7% and soil temperature to 0.05m depth by 0.2-0.98C during the wheat-growing period relative to TT and ZT treatments. Bulk density in 0-0.10m soil layer under PRB was also 5.8% less than for. at planting treatments. Mean wheat yields over 3 years on PRB plots were slightly greater and furrow irrigation in permanent beds was particularly effective in increasing irrigation water use efficiency (similar to 18%), compared with TT and ZT treatments. This increase in water use efficiency is of considerable importance for these arid areas where irrigation water resources are scarce.

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