| 南北方粘质土壤的水分特征研究 |
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| 引用本文： | 吕殿青,潘云. 南北方粘质土壤的水分特征研究[J]. 灌溉排水学报, 2009, 28(1): 20-23 |
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| 作者姓名： | 吕殿青 潘云 |
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| 作者单位： | 湖南师范大学,资源与环境科学学院,长沙,410081;中国科学院,水利部水土保持研究所,黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西,杨凌,712100;湖南师范大学,资源与环境科学学院,长沙,410081 |
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| 基金项目： | 国家自然科学基金，湖南省自然科学基金，黄土高原土壤侵蚀与旱地农业国家重点实验室开放基金 |
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| 摘 要： | 为了研究南北方粘质土壤的水分特征,选择北方塿土和南方红壤典型粘土,测定其持水特征和饱和导水率,采用双环入渗仪进行入渗试验。结果表明:耕作对红壤有较强的压实作用;从持水特征分析,同一吸力下红壤的含水量较高,田间持水量和凋萎系数也高于塿土,而有效水含量略低于塿土,饱和导水率却低于塿土1个数量级;从入渗特征分析,红壤的侧渗能力很强,入渗率比塿土高1个数量级,容易发生大孔隙流。该结果对南北方土壤水分运动的研究具有一定的参考价值。
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| 关 键 词： | 粘质土壤 双环入渗仪 入渗率 持水特征 饱和导水率 |
Water Characteristics for Clay Soil in North and South Regions |
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| LU Dian-qing,,PAN Yun. Water Characteristics for Clay Soil in North and South Regions[J]. Journal of Irrigation and Drainage, 2009, 28(1): 20-23 |
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| Authors: | LU Dian-qing PAN Yun |
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| Affiliation: | 1.College of Resources and Environment Science;Hunan Normal University;Changsha 410081;China;2.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau;Institute of Soil and Water Conservation;Chinese Academy of Sciences and Ministry of Water Resource;Yangling 712100;China |
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| Abstract: | In order to study water characteristics for clay soils in north and south regions,Lou soil in the north and Red soil in the south were chosen.The retention curves and saturated hydraulic conductivities were measured and infiltration experiments were conducted by double-cycle type of infiltrator.The results showed that tillage had stronger compaction effect on Red soil.By analyzing retention properties,water content was higher in the same suction for Red soil.Field capacity and wilting coefficient were highe... |
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| Keywords: | clay soil double-cycle type of infiltrator infiltration rate retention characteristics saturated hydraulic conductivity |
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