| Cite this article: | 邱元锋.高关灌区中稻田间水利用系数试验研究[J].灌溉排水学报,2019,(Z1):-. |
| QIU YUANFENG.高关灌区中稻田间水利用系数试验研究[J].灌溉排水学报,2019,(Z1):-. |
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| DOI：10.13522/j.cnki.ggps.2019014 |
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| The Experimental Study on Field Water Utilization Coefficient of Middle-season Rice in Gaoguan Reservoir Irrigation District |
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QIU YUANFENG
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Wuhan University
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| Abstract: |
| In order to provide scientific basis for the calculation and analysis of irrigation water utilization coefficient, optimal allocation of water resources and the most stringent decision-making of water resources management in Gaoguan Irrigation Districts. Taking the middle-season rice field in Gaoguan Reservoir Irrigation District as the sample, the field water utilization coefficient of middle-season rice is calculated by means of average method, measuring method and contrast measuring method. The results show that the coefficients calculated by the three methods are 0.903, 0.941 and 0.921, respectively. The coefficient measured by the measuring method is the largest and the coefficient calculated by the average method is the smallest. However, the coefficients calculated by the three methods are not very different and the error is less than 5%. The conclusions show that the field water utilization coefficient of middle-season rice in Gaoguan Reservoir Irrigation District decreases with the increase of irrigation quota, showing a negative correlation. Compared with the measuring method, it is considered that the field leakage is the effective water consumption of paddy field, and the ridge leakage is the ineffective water consumption of paddy field, which avoids the cumulative error caused by the intermediate measurement and is suitable for the determination of field water utilization coefficient in paddy field. It is reasonable that the field water utilization coefficient of middle-season rice in Gaoguan Reservoir Irrigation District is 0.921 by contrast measuring method. |
| Key words: Gaoguan Reservoir Irrigation District; Middle-season Rice; Field water utilization coefficient; Experimental study |
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