灌溉定额，是指作物播种（水稻插秧）前及生育期内各次灌水定额之和。灌水定额是指某一次灌水时每亩田的灌水量（立方米/亩），也可以表示为水田某一次灌水的水层深度（毫米）。
...率;灌溉定额;产量 [gap=1141]Key words】Drip irrigation under plastic film; Cotton; irrigation frequency; Scale irrigation; Production ...
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Through calculating ,the feasible fall irrigation quota is 100-120m2/667m2 in light salinization soil,and the feasiblefall irrigation quota is 120-150 m2/667m2 in mild salinization soil. The model is reasonable and exact ,and it can be researched deep.
经计算在轻度盐渍化土壤中秋浇的灌溉定额以100～120m3／667m2为宜；中度盐渍化土壤秋浇的灌溉定额以120～150 m3／667m2为宜，模型合理可靠，准确可行，可进一步向纵深方向进行研究。
参考来源 - 内蒙古河套灌区区域节水灌溉水管理优化模型初步研究In the most ration of water supplying, yield of crop was enhanced when irrigation ration was increased no matter what planting pattern was applied.
无论哪种种植方式，在最大供水量的范围之内，灌溉定额大，作物的产量水平就高。
参考来源 - 膜下滴灌条件下土壤水热的动态变化和作物需水规律的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
该文推算苜蓿灌溉定额的方法也可用于其它作物灌溉用水定额的估算。
The method could also be used to estimate other crop irrigation quota.
无论哪种种植方式，在最大供水量的范围之内，灌溉定额大，作物的产量水平就高。
In the most ration of water supplying, yield of crop was enhanced when irrigation ration was increased no matter what planting pattern was applied.
为保证饲草料地土壤水分的适时供给并获得稳产高产所确定的灌溉定额，灌水次数和灌水时间。
The irrigating water quota , number of irrigation and frequency of irrigation , which is sure to provide the water in time to the forage grass field and get highly stable yield .
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