| 滨海盐渍土和棕壤咸水入渗特征分析 |
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| 引用本文： | 赵丽丽,张振华,李陆生.滨海盐渍土和棕壤咸水入渗特征分析[J].水土保持通报,2013,33(3):44-48,117. |
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| 作者姓名： | 赵丽丽 张振华 李陆生 |
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| 作者单位： | 1. 鲁东大学地理与规划学院,山东烟台,264025
2. 鲁东大学地理与规划学院,山东烟台264025;西北农林科技大学水利与建筑工程学院,陕西杨凌712100 |
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| 基金项目： | 国家"863"计划课题"农田水肥联合调控技术与设备"，国家自然科学基金项目"曝气滴灌气水传输机制与滨海棉田土壤—植物系统响应"，烟台市科技计划"设施农业水气耦合灌溉系统水力特征与关键设备" |
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| 摘 要： | 基于室内均匀土柱一维垂直积水人渗试验,分析了入渗水矿化度对滨海盐渍土和棕壤人渗历时、入渗速率、累积入渗量、平均含水率增量的影响.结果表明,相对淡水入渗,咸水入渗显著增加土壤入渗能力,盐渍土和棕壤入渗能力分别在矿化度为12 g/L和3 g/L时最强,到达25 cm湿润锋处入渗历时分别比淡水少32.5％和38.2％.同一矿化度条件下,通常盐渍土入渗能力较棕壤强；不同矿化度条件下,盐渍土入渗能力差异较小.Philip模型对短历时咸水入渗拟合精度较高,偏差在±0.19％范围内.不同矿化度水入渗,盐渍土湿润剖面平均含水率增量为38.22％～38.85％,棕壤为36.64％～37.82％.
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| 关 键 词： | 一维积水人渗 盐渍土 棕壤 咸水 入渗率 |
| 收稿时间： | 2012/12/12 0:00:00 |
| 修稿时间： | 2/1/2013 12:00:00 AM |
Saline Water Infiltration Characteristics in Coastal Saline Soil and Brown Soil |
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| ZHAO Li-li,ZHANG Zhen-hua and LI Lu-sheng.Saline Water Infiltration Characteristics in Coastal Saline Soil and Brown Soil[J].Bulletin of Soil and Water Conservation,2013,33(3):44-48,117. |
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| Authors: | ZHAO Li-li ZHANG Zhen-hua and LI Lu-sheng |
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| Institution: | College of Geography and Planning, Ludong University, Yantai, Shandong 264025, China;College of Geography and Planning, Ludong University, Yantai, Shandong 264025, China;College of Geography and Planning, Ludong University, Yantai, Shandong 264025, China;College of Water Resources and Architecture Engineering, Northwest Agriculture and Forestry University, Yangling, Shaanxi 712100, China |
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| Abstract: | The influences of mineralization degree on infiltration characteristics of coastal saline soil and brown soil were investigated by an indoor experiment of one-dimensional water ponding infiltration,using infiltration duration,infiltration rate,accumulative infiltration and average water content increment as indexes.Results show that compared with fresh water,saline water increased soil infiltration ability significantly.The abilities for the two soils reached the highest value as the mineralization were 12and 3g/L,respectively.As wetting front reached 25cm,infiltration duration for saline water was less than that for fresh water by 32.5% and 38.2%.Under the same mineralization degree,the infiltration ability for saline soil was usually stronger than that for the brown soil.Under the different mineralization,however,the infiltration ability for the saline soil did not show a big difference.Philip model could accurately simulate the infiltration process for the short-duration salty water and the deviation was within the range of±0.19%.With different mineralization degree levels water,the mean water content increment for the saline soil varied between 36.64% and 37.82%,while that for the brown soil ranged from 36.64%to 37.82%. |
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| Keywords: | one-dimensional ponding infiltration saline soil brown soil saline water infiltration rate |
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