| 土壤水蚀中关于化学因素的研究现状和展望 |
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| 引用本文： | 李法虎,郭锦蓉. 土壤水蚀中关于化学因素的研究现状和展望[J]. 农业工程学报, 2004, 20(5): 32-37 |
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| 作者姓名： | 李法虎 郭锦蓉 |
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| 作者单位： | 中国农业大学水利与土木工程学院,北京,100083;中国农业大学图书馆,北京,100083 |
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| 基金项目： | 农业部农业生态环境科技项目和教育部留学回国人员启动基金项目 |
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| 摘 要： | 土壤水蚀是一个复杂的物理化学过程。化学因素在土壤水蚀过程中起了相当重要的作用。该文系统分析了土壤溶液浓度和组成对土壤团聚体稳定性、地表硬壳形成以及土壤水力传导度、入渗率、地表径流和土壤侵蚀的影响；探讨了长期劣质水灌溉可能对土壤侵蚀产生的影响以及减少劣质水灌溉区土壤侵蚀的化学方法；指出土壤表面密封层对土壤侵蚀的影响及其机理描述是土壤侵蚀研究中的一个重要研究方向。
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| 关 键 词： | 土壤水蚀 物理化学影响 土壤溶液浓度 钠吸附比(SAR) 入渗率 |
| 文章编号： | 1002-6819(2004)05-0032-06 |
| 收稿时间： | 2003-12-11 |
| 修稿时间： | 2003-12-11 |
Research status and future development of effects of chemical factors on soil water erosion |
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| Li Fahu and Guo Jinrong. Research status and future development of effects of chemical factors on soil water erosion[J]. Transactions of the Chinese Society of Agricultural Engineering, 2004, 20(5): 32-37 |
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| Authors: | Li Fahu and Guo Jinrong |
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| Abstract: | Soil water erosion is a complex physicochemical process. Chemical factors play an important role in soil water erosion. The effects of soil solution concentration and composition on soil aggregation stability, surface crust formation, soil hydraulic conductivity, infiltration rate, surface runoff, and soil water erosion were systematically analyzed in the paper. The possible impacts of long-term irrigation with marginal water on soil water erosion as well as the chemical methods on reducing soil erosion also were discussed. The more attentions of effect of soil surface seal formation on soil erosion and its mechanism need to be payed to in the future research. |
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| Keywords: | soil water erosion physicochemical impact soil solution concentration sodium adsorption ratio infiltration rate |
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