| Cite this article: | 刘洋,李金山,孙秀路,等.基于winSRFR模拟的畦灌入渗参数和灌水质量变化规律研究[J].灌溉排水学报,0,():-. |
| LIU Yang,LI Jinshan,SUN Xiulu,et al.基于winSRFR模拟的畦灌入渗参数和灌水质量变化规律研究[J].灌溉排水学报,0,():-. |
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| DOI： |
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| Study on infiltration parameters of border irrigation and change rule of irrigation quality based on winSRFR simulation |
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LIU Yang, LI Jinshan, SUN Xiulu, SUN Hao
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Farmland Irrigation Research Institute,Chinese Academy of Agricultural Sciences,Key Laboratory of Water-saving Agriculture of Henan Province,Key Laboratory of Water-saving Irrigation Engineering of Ministry of Agriculture and Rural Affairs
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| Abstract: |
| 【Objective】To explore the infiltration parameters of border irrigation and the variation law of irrigation water quality, and the relationship between those and irrigation time. 【Method】 Based on seven irrigation data (summer maize-winter wheat rotation), the winSRFR model was used to simulate the irrigation process, the infiltration parameters and irrigation uniformity were calculated. 【Result】Result 1: The root mean square error of water flow advance and recession ranged from 0.05 to 0.41 hr and 0.06 to 0.71 hr, accounting for 1.23%~7.16% and 1.21%~23.37% of the time of advance and recession; Result 2: The water flow advance rate of winter wheat was significantly slower than that of summer maize, that takes 123.99% more time, and the soil infiltration coefficient in winter wheat period was 1.05 times higher than that in summer maize period, the soil infiltration index was 34.61% lower than that in summer maize period, and the roughness was 39.31% higher than that in summer maize period.. Results 3: Through fitting, the infiltration coefficient was linear with irrigation time (R2 = 0.90), which could be used to estimate infiltration coefficient, but the linear relationship between irrigation quality index (DU and AE) and irrigation time was not obvious (R2 = 0.004 and R2 = 0.27). 【Conclusion】 winSRFR simulation results are good. With the increase of irrigation times, infiltration coefficient and infiltration index decrease, surface infiltration capacity decreases, which is conducive to the improvement of irrigation quality. Infiltration coefficient has a linear relationship with irrigation time, but the linear relationship between irrigation quality index and irrigation time is not obvious. |
| Key words: winSRFR; infiltration coefficient; irrigation quality; irrigation time |
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