| Cite this article: | 王忠静,陈江,刘晋龙,等.精准灌溉的节水内涵及其节水率计算方法[J].灌溉排水学报,0,():-. |
| WANG Zhongjing,CHEN Jiang,LIU Jinlong,et al.精准灌溉的节水内涵及其节水率计算方法[J].灌溉排水学报,0,():-. |
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| DOI： |
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| Concept of Water Saving Efficiency and Calculation for Precision Irrigation |
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WANG Zhongjing,CHEN Jiang,LIU Jinlong,et al
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1.School of Civil and Hydraulic Engineering,Ningxia University;2.Beijing General Municipal Engineering Design Research Institute Co,Ltd;3.School of Civil Engineering,Tsinghua University
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| Abstract: |
| Precision irrigation is an important way to improve the efficiency of water resource utilization and save water resources. However, the water-saving connotation of precision irrigation in agriculture have not discussed yet. This paper explored the water-saving connotation of precision irrigation and deduced a relationship between the water-saving rate and precision irrigation accuracy. This method can evaluate the water-saving rate of irrigation systems including drip irrigation, sprinkler irrigation, surface irrigation and water diversion and distribution. Taking the actual irrigation recorders in June 2022 and June 2023 in Ningxia Nongchang Irrigation District as an example, the intelligent total channel control system base linear quadratic control algorithm based integrated time delay model has a water saving rate of 9.16% and 7.89%, respectively, compared with the single gate control mode. The research provides a reference for comprehensively evaluating the water-saving effects of different irrigation techniques and improving water-saving measures. |
| Key words: precision irrigation; water distribution accuracy; irrigation water saving efficiency; total channel control |
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