半湿润偏旱区施肥对冬小麦水分利用效率和产量的影响

Effect of Fertilizer Supply on Water Use Efficiency and Yield of Winter Wheat in the Semihumid Area Liable to Drought

１９９２～１９９５年，在半湿润偏旱区进行了施肥对冬小麦水分利用效率和产量影响试验，获得耗水量与产量关系的数学模型。研究结果表明，在一定施肥范围内，冬小麦的水分利用效率和产量随着施肥量的增加而提高。

The study of the effect of fertilizer supply on water use efficiency and yield of winter wheat in the semihumid area liable to drought was conducted from 1992 to 1995,The mathe-matical pattern of water supply respons to the yield of winter wheat was made up.The resultshowed that under the definite fdrtilizer supply,with the fertilizer supply rising,the water use efficiency and the yield of winter wheat increased。