Wang Hai-xia, Li Yu-yi, Ren Tian-zhi, Pang Huan-cheng
Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
Ying Yong Sheng Tai Xue Bao. 2011 Jul;22(7):1759-64.
Three irrigation modes in winter wheat growth season were carried out in Heilonggang basin of North China Plain to investigate their effects on the grain yield, water consumption, and water use efficiency (WUE) of winter wheat-summer maize. The three irrigation modes included irrigation before sowing (75 mm, W1), irrigation before sowing and at jointing stage (75 mm + 90 mm, W2), and irrigation before sowing, at jointing stage, and at filling stage (75 mm + 90 mm + 60 mm, W3). With the irrigation modes W2 and W3, the increment of the annual yield of winter wheat-summer maize was 8.7% and 12.5% higher than that with W1, respectively. The water consumption in winter wheat growth season decreased with increasing irrigation amount, while that in summer maize growth season increased with the increasing irrigation amount in winter wheat growth season. The WUE of winter wheat with the irrigation mode W2 was 11.1% higher than that with W3, but the WUE of summer maize had less difference between irrigation modes W2 and W3. The annual WUE (WUE(T)) of W2 and W1 was 21.28 and 21.60 kg(-1) x mm x hm(-2), being 7.8% and 9.4% higher than that of W3, respectively. Considering the annual yield, water consumption, and WUE, irrigation mode W2 could be the advisable mode for water-saving and high-yielding.
在中国华北平原黑龙港流域冬小麦生长季开展了三种灌溉模式试验，以研究其对冬小麦-夏玉米产量、耗水量及水分利用效率（WUE）的影响。三种灌溉模式分别为：播前灌溉（75毫米，W1）、播前及拔节期灌溉（75毫米+90毫米，W2）、播前、拔节期及灌浆期灌溉（75毫米+90毫米+60毫米，W3）。采用W2和W3灌溉模式时，冬小麦-夏玉米年产量增幅分别比W1模式高8.7%和12.5%。冬小麦生长季耗水量随灌溉量增加而减少，而夏玉米生长季耗水量随冬小麦生长季灌溉量增加而增加。W2灌溉模式下冬小麦的水分利用效率比W3高11.1%，但W2和W3两种灌溉模式下夏玉米的水分利用效率差异较小。W2和W1的年水分利用效率（WUE(T)）分别为21.28和21.60千克(-1)×毫米×公顷(-2)，分别比W3高7.8%和9.4%。综合考虑年产量、耗水量和水分利用效率，W2灌溉模式可能是节水高产的适宜模式。
