长江科学院院报 ›› 2018, Vol. 35 ›› Issue (2): 23-27.DOI: 10.11988/ckyyb.20160914

• 水资源与环境 • 上一篇    下一篇

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

童 坤1,2,耿雷华2   

  1. 1.中国科学院南京地理与湖泊研究所 中国科学院流域地理学重点实验室,南京 210008;
    2.南京水利科学研究院 水文水资源与水利工程科学国家重点实验室,南京 210029
  • 收稿日期:2016-09-06 出版日期:2018-02-01 发布日期:2018-03-01
  • 作者简介:童 坤(1986-),女,江苏高邮人,工程师,博士,主要从事水资源配置方面的研究工作。E-mail:tongkun0502@hotmail.com
  • 基金资助:
    水利部公益性行业科研专项(201201020);南京水利科学研究院青年基金项目(Y516011);水利部水资源费项目(SS515004)

Conversion of Irrigation Water Consumption Per Unit Area BetweenDifferent Precipitation Frequency Years and Multi-year Average

TONG Kun1,2, GENG Lei-hua2   

  1. 1.Key Laboratory of Watershed Geographic Science, Nanjing Institute of Geography and Limnology,ChineseAcademy of Sciences, Nanjing 210008,China;
    2.State Key Laboratory of Hydrology-Water Resourcesand Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China
  • Received:2016-09-06 Online:2018-02-01 Published:2018-03-01

摘要: 随着降水量的变化,农业用水量变化差异较大,而如何确定不同降水频率之间农业用水量的关系一直是难点之一。结合降水及单位灌溉面积用水量的实际数据,将全国划分6个区,计算出各个区域农田单位灌溉面积用水量不同频率与多年平均相对应的调节系数。选取江苏省作为案例进行应用,根据江苏省的农业发展、现状水资源概况确定农田单位灌溉面积用水量不同频率与多年平均的调节系数,其中降水频率70%~80%时的调节系数最大,为1.12;95%下的调节系数最小,为0.81;结合相关规划预测2020年降水频率75%下农田单位灌溉面积用水量7 210 m3/ hm2,95%下农田单位灌溉面积用水量5 197 m3/ hm2。研究成果可为不同水平年农业用水的计算提供参考依据。

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

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.

Key words: precipitation, agricultural water consumption, irrigation water consumption per unit area, precipitation frequency, regulation coefficient

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