灌水、施肥与冬小麦蒸发蒸腾量及产量的关系

Winter Wheat Evapotranspiration and Yield with Irrigation and Fertilization

试验研究了晋南地区冬小麦在不同生长期的亏水灌溉、施肥条件下对其产量的影响。研究表明,冬小麦蒸腾量随着灌水量增加而增加,相应的产量也明显提高;冬小麦产量与总耗水量呈二次抛物线关系;灌水量相同,施肥量不同,对水分蒸腾量的影响较小;施肥和灌水相同条件,灌水时间不同对产量的影响明显。

The pilot experiments have been done to discover the impacts of water deficit and fertilization in various levels on the yield of winter wheat in its different growing stages in the south of Shanxi Province.The research findings indicate that the evapotranspiration of winter wheat rises with the increasing amount of irrigation,and the corresponding yields are also improved remarkably.The winter wheat yield and total water consumption are in a quadratic parabolic curve.The same amount of irrigation water with different amount of fertilization would pose less impacts on water evapotranspiration,and if the level of fertilization and irrigation are the same,the different irrigation times would result in the different yields of winter wheat significantly.