WANG Lei 1, 2, LIU Yu 1, 2, XU Di 1, 2, PENG Zhi-gong 1, 2

1. State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
2. National Center for Efficient Irrigation Engineering and Technology Research-Beijing, Beijing 100048, China

Abstract: Irrigation accounts for the main part of water use and consumption in the Hai River basin, where the shortage of irrigation water resource becomes a critical problem affecting agricultural production and food security. Taking the advantages of field observation and remote sensing data, this paper proposed an agricultural water management method to improve irrigation management for higher water use efficiency at regional scale. The paper developed an irrigation management model based on crop ET quota control theory. The main function consists of water consumption analysis based on remote sensing data, regional water consumption objective analysis, crop ET quota control, crop pattern improvement, water saving potential calculation and irrigation quota estimation. Different irrigation management scenarios can be made annually according to a series of hydrological year and different practical ET control methods. The model can provide regional irrigation management methods for arid or semi-arid areas.

Key words: ET management, Crop ET quota, remote sensing water consumption data, irrigation quota, non-engineering water saving

Published in: Journal of China Institute of Water Resources and Hydropower Research (Vol. 12 No. 1, 2014)