【摘要】 １９９３年～１９９５年，在渭北旱塬通过对冬小麦进行不同灌溉量试验，研究了在不同灌溉条件下冬小麦的水分利用效率（ＷＵＥ）和水分增产潜力。结果表明，在一定的供水范围内，随着供水量的增加，冬小麦ＷＵＥ呈非线性增长，冬小麦产量与耗水量的关系为二次曲线函数关系。在冬小麦生长关键时期灌溉６０ｍｍ，每６６６．７ｍ２可增加产量１００ｋｇ。更多还原

【Abstract】 From 1993 to 1995, the experiment of moisture gradient had been carried out in Weibei in Shaanxi Province. The water use efficiency (WUE) and the potential yield of moisture had been researched under different amount of moisture conditions. The result showed that, with the increase of the moisture within a certain limits,the WUE of winter wheat had a nonlinear increasing. The relation between the yield of winter wheat andthe consumed moisture was in a square curve function. In the growing period of winter wheat, if a moisture content of 60 mm was supplied, more than 100 kg grains could be attained in each 666.7m 2 .更多还原