摘要
开展宁夏扬黄延伸限额灌溉区降雨频率分析,试验研究取得了不同限额灌溉定额对应的作物产量,分析了不同地区、在不同降水频率时作物的缺水量、在限额灌溉情况下的灌溉保证程度,以及不同灌溉保证程度与作物产量的关系,并提出在灌区尺度推广限额灌溉应该考虑扩大系数的取值范围。
The paper analyzed the rainfall frequency of Ningxia limited irrigation area and got correspond- ing crop yield under the different limited irrigation quota. Through analyzing the shortage water in differ- ent area and various rainfall rate, irrigation guarantee degree of the limited irrigation conditions and the relationgship between the irrigation guarantee degree and the yield, the paper proposed appropriate expan- ding coefficient ranges of promoting limited irrigation in the irrigation district.
出处
《水资源与水工程学报》
2013年第4期74-77,81,共5页
Journal of Water Resources and Water Engineering
基金
水利部公益行业科研专项(201001063
201001064)
关键词
限额灌溉
保证率
产量
扬黄灌区
宁夏
limited irrigation
guarantee rate
yield
pumping irrigation district from the Yellow river
Ningxia
