| 土壤结构组成对K+运移障碍因子的定量研究 |
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| 作者姓名： | WANG Yu ZHANG Yi-Ping |
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| 作者单位： | Department of Natural Resources and Environmental Sciences, Northwest Science and Technology University of Agriculture and Forestry, Yangling, Shaanxi 712100 (China);Department of Natural Resources and Environmental Sciences, Northwest Science and Technology University of Agriculture and Forestry, Yangling, Shaanxi 712100 (China) |
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| 基金项目： | *1Project (No.49901009) supported by the National Natural Science Foundation of China. |
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| 摘 要： | With six packed columns composed of <1 μm and 5 μm~0.25 mm fractions from an Eum-Orthic Anthrosol (Columns 1~6) and one column of the Eum-Orthic Anthrosol (Column 7), K+ transport experiments under the condition of saturated steady water flow were conducted to qualify the effects of soil texture composition on the retardation factor (R) of K+ transport. The results showed that the retardation factor of K+ transport in the tested soil columns greatly increased with increasing clay contents. In an attempt to use pedo-transfer function (PTF) approach in the solute transport study, a preliminary PTF was established through the six packed columns (Columns 1~6) with soil basic data including soil bulk density, volumetric water content and clay content to predict the retardation factor, and proved valid by the satisfactory prediction of R in Column 7.
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| 关 键 词： | 二次运移作用 钾离子运移 阻滞因素 结构组成 土壤性质 溶解质 |
Quantitative effect of soil texture composition on retardation factor of K+ transport |
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| WANG Yu,ZHANG Yi-Ping.Quantitative effect of soil texture composition on retardation factor of K+ transport[J].Pedosphere,2001,11(4):377-382. |
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| Authors: | WANG Yu and ZHANG Yi-Ping |
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| Institution: | Department of Natural Resources and Environmental Sciences, Northwest Science and Technology University of Agriculture and Forestry, Yangling, Shanxi 712100 (China);Department of Natural Resources and Environmental Sciences, Northwest Science and Technology University of Agriculture and Forestry, Yangling, Shanxi 712100 (China) |
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| Abstract: | |
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| Keywords: | pedo-transfer function retardation factor soil basic properties soil solute transport |
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