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| 砾石对土壤水分入渗(扩散）的影响研究 | |
| 引用本文： | 李燕,刘吉振,魏朝富,龚久平,洪云菊,易志坚,高静. 砾石对土壤水分入渗(扩散）的影响研究[J]. 土壤学报, 2011, 48(2): 435-439 |
| 作者姓名： | 李燕 刘吉振 魏朝富 龚久平 洪云菊 易志坚 高静 |
| 作者单位： | 1. 重庆市农业科学院农业质量标准检测技术研究所,重庆,401329 2. 重庆市农业科学院蔬菜花卉研究所,重庆,400055 3. 西南大学资源环境学院,重庆,400716 |
| 基金项目： | 国家水体污染控制与治理科技重大专项资助（2008ZX07425-003） |
| 摘 要： | 砾石(>2 mm的碎石)广泛存在于世界的部分土壤中。近几年来,随着山地土壤的开发与利用,砾石对土壤物理和侵蚀过程的影响研究受到广泛重视。不同砾石具有不同持水性,砾石含量、大小和形状以及存在位置对土壤入渗有不同影响。 |
| 关 键 词： | 砾石 土壤水 垂直入渗 水平扩散 |
| 收稿时间： | 2009-03-04 |
| 修稿时间： | 2010-03-03 |
Effect of rock fragment content on water infiltration(diffusion) of purple soils |
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| liyan. Effect of rock fragment content on water infiltration(diffusion) of purple soils[J]. Acta Pedologica Sinica, 2011, 48(2): 435-439 | |
| Authors: | liyan |
| Affiliation: | Institute of Agricultural Quality Standard and Testing Technology, Chongqing Academy |
| Abstract: | The article studies soil water infiltration for three purple soils evaporation with four different treatments. The results showed that: In vertical infiltration and horizontal diffusion, with rock fragment increasing, the accumulative infiltration(diffusion) quantities dropped off, the total infiltration(diffusion) times first decreased and then increased, the total infiltration(diffusion) rates were opposite, and the saturated water weight, the draining weight, the begin leaky time, the stable leaky time dropped off. The Kostiakov infiltration model were used to simulate infiltration (diffusion) in any time, and the average correlation coefficients exceeded 0.99, and the coefficient k increased with rock fragment increasing, but the exponents were opposite. |
| Keywords: | Rock fragment Soil water Vertical infiltration Horizontal diffusion |
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