河南水利与南水北调2024，Vol.53Issue(10)：17-19,3.
基于遥感蒸散模型的灌区节水潜力研究
Study on Water Saving Potential of Irrigated Area Based on Remote Sensing Evapotranspiration Model
张子敬 1李明慧1
作者信息
- 1. 河南省豫东水利保障中心水利科学试验站,河南 开封 475000
- 折叠
摘要
Abstract
In order to evaluate the water-saving potential of an irrigation district and formulate a scientific water-saving plan,the irrigation water utilization efficiency and water productivity of the irrigation district from 2013 to 2020 are measured,and the water-saving potential of different water-saving plans are determined from different perspectives.The results show that the utilization efficiency of irrigation water is positively correlated with the the local precipitation and negatively correlated with the net irrigation water quantity.In case of less local precipitation and less net irrigation water quantity,the water-saving potential is higher.According to the calculation results of cumulative water productivity from 2013 to 2020,the short-term(50%of the annual average cumulative water productivity)and long-term(70%of the annual average cumulative water productivity)target water productivity are 1.12 kg/m3 and 1.31 kg/m3 respectively.The short-term and long-term cumulative crop water-saving potential are 1.213×108 m3 and 2.804×108 m3 respectively,indicating that the higher the water productivity,the greater the cumulative water-saving potential,and the improvement of water productivity has a significant effect on water saving.关键词
节水潜力/工程节水/作物节水/水分生产率Key words
water-saving potential/engineering water saving/crop water saving/water productivity分类
农业科技引用本文复制引用
张子敬,李明慧..基于遥感蒸散模型的灌区节水潜力研究[J].河南水利与南水北调,2024,53(10):17-19,3.
