| 地下滴灌土壤水分运移分布规律试验研究 |
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| 引用本文： | 王超,李援农. 地下滴灌土壤水分运移分布规律试验研究[J]. 灌溉排水学报, 2011, 30(1): 136-138 |
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| 作者姓名： | 王超 李援农 |
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| 作者单位： | 西北农林科技大学水利与建筑工程学院; |
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| 基金项目： | 国家支撑计划项目(2007BAD88B05); 国家863计划项目(2006AA100213) |
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| 摘 要： | 通过地下滴灌的室内试脸,研究了不同滴头流量对土壤湿润体特性的影响.试验采用杨凌粘壤土,滴头流量分别为0.3、0.5、0.7、0.8 L/h,埋深为25 cm.结果表明,湿润体为轮廓线近似于抛物线的不规则形体;湿润锋运移与时间的变化呈显著幂函数关系;滴头流童0.7 L/h为平均含水率由稳态到紊乱态的拐点,该点可以作为地下...
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| 关 键 词： | 地下滴灌 滴头流量 湿润体 平均含水率 |
Laboratory Experimental Study on Soil-water Movement of Subsurface Drip Irrigation |
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| WANG Chao,LI Yuan-nong. Laboratory Experimental Study on Soil-water Movement of Subsurface Drip Irrigation[J]. Journal of Irrigation and Drainage, 2011, 30(1): 136-138 |
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| Authors: | WANG Chao LI Yuan-nong |
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| Affiliation: | WANG Chao,LI Yuan-nong(College of Hydraulic and Architectural Engineering,Northwest Science & Technology University of Agriculture & Forestry,Yangling 712100,China) |
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| Abstract: | Through subsurface drip irrigation laboratory experiments,different dripper discharge on the soil wetting front were analyzed.The experiment take the Yangling clay loam soil,and the experimental dripper discharges were 0.3,0.5,0.7,0.8 L/h,and the dripper was 25 cm deeply buried.The results indicated that the soil wetting front was irregular front which outline was irregular parabola;the soil bulk density and the change of time is a power function relation;dripper discharges 0.7 L/h express the average soil ... |
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| Keywords: | subsurface drip irrigation dripper discharge volume of soil wetting front average soil moisture |
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