Experimental Study on Water Use Efficiency of Winter Wheat in Different Irrigation Methods

摘要

In order to probe dry matter accumulation, grain yield and water use efficiency of winter wheat, the study hasbeen conducted under three irrigation treatments by the different irrigation methods. The results show thatwinter wheat water consumption and the ground dry matter accumulation gradually increase under thedifferent irrigation conditions, with the increase in the number of irrigations, while yield and water use efficiencyincrease at first and then decrease. Under the same irrigation times, the water consumption of winter wheatin bed-planting is lower than that in flat planting, and dry matter accumulation is higher than that of flatplanting. Compared with the flat planting, the water quantity of bed-planting can be saved 40%, the productioncan increase by 5.5% to 11.3%, and water use efficiency can increase by 0.17 to 0.40kg/m 3 . On the basis ofthe experimental results, it is suggested that the bed-planting mode in combination with considerably deficitirrigation at winter, jointing and booting stages is worth extending the application in winter wheat production.