长江科学院院报2018，Vol.35Issue(2)：23-27,5.DOI:10.11988/ckyyb.20160914
不同频率与多年平均农田单位灌溉面积用水量折算方法研究
Conversion of Irrigation Water Consumption Per Unit Area Between Different Precipitation Frequency Years and Multi-year Average
摘要
Abstract
Agricultural water consumption varies drastically with the change of precipitation.Determining the relation among agricultural water consumption in different precipitation years has always been a difficulty.In this article,according to the actual data of precipitation and irrigation water consumption per unit hectare,the ratio of irrigation water consumption at a given precipitation frequency to multi-year average irrigation water consumption (defined as regulation coefficient) is calculated for six irrigation regions.Furthermore,according to the status quo of agricultural development and water resources in Jiangsu Province,the values of regulation coefficient at different precipitation frequencies are obtained.Results show that the maximum regulation coefficient is 1.12 at 70％-80％ precipitation frequency,and the minimum regulation coefficient is 0.81 at 95％ precipitation frequency;according to planning,the irrigation water consumption in 2020 at 75％ precipitation frequency is estimated to be 7 210 m3/hm2,and 5 197 m3/hm2 at 95％ precipitation frequency.关键词
降水量/农业用水量/农田单位灌溉面积用水量/降水频率/调节系数Key words
precipitation/agricultural water consumption/irrigation water consumption per unit area/precipitation frequency/regulation coefficient分类
建筑与水利引用本文复制引用
童坤,耿雷华..不同频率与多年平均农田单位灌溉面积用水量折算方法研究[J].长江科学院院报,2018,35(2):23-27,5.基金项目
水利部公益性行业科研专项(201201020) （201201020）
南京水利科学研究院青年基金项目(Y516011) （Y516011）
水利部水资源费项目(SS515004) （SS515004）
