| Cite this article: | 索滢,孟彤彤,马海峰,等.水联网智慧灌区节水灌溉技术综合水效率评价研究[J].灌溉排水学报,0,():-. |
| SUO Ying,MENG Tong-tong,MA Haifeng,et al.水联网智慧灌区节水灌溉技术综合水效率评价研究[J].灌溉排水学报,0,():-. |
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| Evaluation Study on Comprehensive Water Efficiency of Water Saving Irrigation Technology in Internet Water Smart Irrigation Area |
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SUO Ying1, MENG Tong-tong2, MA Haifeng3, LIU De-jun4, WANG Zhong-jing1
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1.Department of Hydraulic Engineering,Tsinghua University;2.Gansu Research Institute for Water Conservancy;3.Ningxia Institute of Water Research;4.Institute of Water Resources and Hydropower Research of Qinghai Province
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| Abstract: |
| 【Objective】Aiming at the problems encountered in the large-scale promotion of water-saving irrigation, construct a comprehensive water efficiency evaluation system suitable for the current development.【Method】A comprehensive water efficiency evaluation index system from three aspects of technical level, economic and social, ecological and environmental protection for water-saving irrigation in terms of precision, economy, intelligence, ecology, and low-carbon is constructed by combining literature research, content analysis, and knowledge management reconstruction. Precision includes the effective utilization coefficient of irrigation water, the uniformity of irrigation water, and water measurement technology promotion rate; Economy includes the rate of yield increase, investment recovery period, water fee collection rate; Intelligence includes the convenience of operation and management, the prevalence of soil moisture monitoring and the adaptability of water source risk; Ecological properties include the degree of vegetation cover, soil salinization improvement degree, surface and groundwater improvement degree; Low-carbon includes energy saving and land saving.【Result】The comprehensive water efficiency of the 10,000-mu level water-saving irrigation demonstration area in the three provinces (regions) of Gansu, Ningxia and Qinghai was evaluated by the analytic hierarchy process. The combination of photovoltaic water lifting and micro-irrigation technology can realize unattended irrigation areas, which greatly improves management efficiency and ensures irrigation effect; The application of measurement and control integrated gate in Gansu and Ningxia significantly improves irrigation measurement accuracy, reduces energy consumption, saves labor, and increases irrigation water bill payment rate; The water networked irrigation district composed of physical water network, information water network and decision water network can controls the risk of water supply, optimizes the irrigation system, improves crop yield and is the future direction of intelligent water conservation.【Conclusion】In the context of smart water development and new infrastructure construction, it is necessary to establish a comprehensive evaluation system of agricultural irrigation system from source to impact. Improving the level of digital monitoring, intelligent control and precise scheduling of irrigation districts is the leading factor in improving the comprehensive water efficiency of irrigation districts. |
| Key words: Water-saving irrigation; Integrated water efficiency; Northwest China; Hierarchical Analysis; Smart irrigation area |
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