| 暗管排水条件下土壤水盐运移特征试验研究 |
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| 引用本文： | 张亚年,李静. 暗管排水条件下土壤水盐运移特征试验研究[J]. 人民长江, 2011, 42(22): 70-72 |
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| 作者姓名： | 张亚年 李静 |
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| 作者单位： | 1. 水利部长江勘测技术研究所,湖北武汉,430011
2. 中国地质大学环境学院,湖北武汉,430074 |
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| 摘 要： | 合理有效地治理开发盐碱地对农业生产及生态建设具有重要的实际意义。利用江苏滨海滩涂盐碱土壤,采用暗管排水的方法,进行了室内渗流槽试验,物理模拟土壤排盐过程。研究发现受暗管排水影响,土壤盐分极易排出,可有效地降低土壤盐度;表层土壤盐分运移主要受降雨量影响,盐分下降速率最快;深层土壤受上部土壤盐分的累积和降雨共同影响,盐分下降速率存在滞后性。数学模型Hydrus模拟与物理实验结果相似,并预测了试验后3个月的土壤盐分。
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| 关 键 词： | 渗流槽 暗管 土壤盐分 水盐运移 模型试验 |
Experimental study of movement law of water and salt in soil under conditi on of discharge by covered conduits |
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| ZHANG Ya‘nian,LI Jing. Experimental study of movement law of water and salt in soil under conditi on of discharge by covered conduits[J]. Yangtze River, 2011, 42(22): 70-72 |
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| Authors: | ZHANG Ya‘nian LI Jing |
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| Affiliation: | ZHANG Ya'nian1,LI Jing2(1.Changjiang Reconnaissance Technology Research Institute,Ministry of Water Resources,Wuhan 430011,China,2.School of Environmental Study,China University of Geoscience(Wuhan),Wuhan 430074,China) |
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| Abstract: | Reasonable and effective harnessing of saline-alkali land has an important practical significance to agricultural production and ecological construction.The test in seepage chute is conducted using the saline soil of tidal land in Jiangsu Province to simulate the salt discharge process.The research discovers that water discharge by covered conduits facilitates the salt discharging from soil and reduces the salt content;the salt movement in surface soil is mainly influenced by precipitation and salt content ... |
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| Keywords: | seepage chute covered conduit soil salt water and salt movement model experiment |
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