| Cite this article: | 贾易周,刘子西,唐莲.基于系统动力学的青铜峡灌区农业用水效率调控研究[J].灌溉排水学报,0,():-. |
| JIAYIZHOU,LIUZIXI,TANGLIAN.基于系统动力学的青铜峡灌区农业用水效率调控研究[J].灌溉排水学报,0,():-. |
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| DOI： |
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| Analysis on the regulation of agricultural water use efficiency in Qingtongxia irrigation area based on system dynamics |
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JIAYIZHOU1,2, LIUZIXI1, TANGLIAN1
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1.Ningxia University;2.Xifeng management supervision of soil and water conservation in the yellow river
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| Abstract: |
| This paper uses system dynamics to study the regulation of agricultural water resources in Qingtongxia irrigation area, and analyzes the agricultural water use efficiency in the irrigation area. The system dynamics model was established by using the blue and green water footprints calculated, and the variable factors affecting the water footprint of grain crops in Qingtongxia Irrigation Area were reasonably adjusted. The results showed that: (1) The main source of water demand for agricultural planting in Qingtongxia Irrigation Area is irrigation water, forming a production water pattern with blue water as the main and green water as the supplement. At the same time, when the water demand of crops is met, the blue water footprint and green water footprint show opposite trends; (2) Under the premise of ensuring that the blue water consumption of grain crops in Qingtongxia Irrigation Area remains unchanged, the green water utilization coefficient and the irrigation water utilization coefficient are selected as the main parameters to simulate the model. When the green water utilization coefficient and the irrigation water utilization coefficient increase respectively, the yield of grain crops increases to different degrees; (3) When the green water utilization coefficient and the irrigation water utilization coefficient increase at the same time, the increase in grain crop yield is greater than that when a single coefficient is adjusted. |
| Key words: Water footprint; System Dynamics; Agricultural water efficiency; ;Qingtongxia Irrigation District |
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