| 黄土高原土壤物理性质对养分迁移速率的影响 |
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| 引用本文： | 王益,刘军,王益权. 黄土高原土壤物理性质对养分迁移速率的影响[J]. 水土保持通报, 2005, 25(4): 20-23 |
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| 作者姓名： | 王益 刘军 王益权 |
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| 作者单位： | 西北农林科技大学,资源环境学院,陕西,杨凌,712100 |
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| 基金项目： | 陕西省自然科学基金资助项目（2003C130） |
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| 摘 要： | 采用一维饱和稳定流易混置换试验,用Cl-和K 为对象模拟黄土高原地区4种典型土壤对养分运移阻滞因子R的影响。试验结果表明对于不同质地的土壤,随着土壤质地变细,运移阻滞因子增大;对于同种质地土壤,随着容重增加,运移阻滞因子增大;对于同种质地而粒级不同的土壤,运移阻滞因子随着粒级的增大而增大;受土壤排斥的离子较受土壤吸引的离子容易穿透土壤。
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| 关 键 词： | 土壤物理性质 溶质运移 养分 |
| 文章编号： | 1000-288X(2005)04-0020-04 |
| 收稿时间： | 2004-07-29 |
| 修稿时间： | 2004-07-29 |
Effects of Soil Physical Properties on Nutrient Transport Velocity in Loess Plateau |
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| WANG Yi,LIU Jun and WANG Yi-quan. Effects of Soil Physical Properties on Nutrient Transport Velocity in Loess Plateau[J]. Bulletin of Soil and Water Conservation, 2005, 25(4): 20-23 |
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| Authors: | WANG Yi LIU Jun WANG Yi-quan |
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| Affiliation: | College of Resources and Environment, Northwest University of Agriculture and Forestry, Yangling District 712100, Shaanxi Province, China;College of Resources and Environment, Northwest University of Agriculture and Forestry, Yangling District 712100, Shaanxi Province, China;College of Resources and Environment, Northwest University of Agriculture and Forestry, Yangling District 712100, Shaanxi Province, China |
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| Abstract: | The effects of soil physical properties, such as texture, bulk density and particle-size on nutrient transport velocity are studied by one-dimensional saturated steady flow experiments. The results showed that the retardation factor R increased with the increase of the clay content. R increased as bulk density increased in the same soil. R also increased with particle-size at different treatments. The repellent nutrient broke through soil column more easily than the reactive nutrient. |
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| Keywords: | soil physical properties transport nutrient |
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