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Achieving higher yield per unit of water is one of the most important challenges in water-limited agriculture. In this paper, crop water productivity (CWP) of winter wheat was calculated and analyzed in the plain of Hai Basin in northeastern China. The average CWP of winter wheat (Triticumaestivum L.) in the basin for 2003–2009 was 1.049kgm −3 , with CWP values across the basin ranging between...
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