Sprinkler 灌溉是为冬季小麦夏天玉米使用的技术加倍在北方中国平原收割系统的典型灌溉之一。在北京区域在 sprinkler 灌溉下面评估冬季小麦的土壤水分蒸发蒸腾损失总量(et ) ,地实验在种季节通过被进行 2005 2008 在位于 Tongzhou 县的试验性的车站,中国北京,与不同灌溉深度。结果显示土壤水内容的一个相对大的变化发生在 0 40 厘米土壤层以内。冬季小麦的季节的 et 通常与增加灌溉数量增加了,当土壤水的季节的用法与灌溉数量有一种否定关系时。土壤蒸发(E ) 在从复苏到成熟的时期期间是大约 25% 冬季小麦 et。当 Es/ET 与增加灌溉数量减少了时, E 增加了。Sprinkler 灌溉与相对大的灌溉限额和低灌溉频率安排能减少 E 并且支持灌溉水使用效率。
Sprinkler irrigation is one of the typical irrigation technologies used for the winter wheat-summer maize double cropping system in the North China Plain. To evaluate the evapotranspiration (ET) of winter wheat under sprinkler irrigation in Beijing area, field experiments were conducted in growing seasons through 2005-2008, in the experimental station located in Tongzhou County, Beijing, China, with different irrigation depths. Results indicated that a relatively large variation of soil water content occurred within 0-40 cm soil layer. The seasonal ET of winter wheat generally increased with increasing irrigation amount, while the seasonal usage of soil water had a negative relationship with irrigation amount. Soil evaporation (Es) was about 25% of winter wheat ET during the period from reviving to maturity. Es increased while Es/ET decreased with increasing irrigation amount. Sprinkler irrigation scheduling with relatively large irrigation quota and low irrigation frequency can reduce Es and promote the irrigation water use efficiency.