Pedosphere 11(4): 377--382, 2001
ISSN 1002-0160/CN 32-1315/P
©2001 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Quantitative effect of soil texture composition on retardation factor of K+ transport |
| WANG Yu and ZHANG Yi-Ping |
| Department of Natural Resources and Environmental Sciences, Northwest Science and Technology University of Agriculture and Forestry, Yangling, Shaanxi 712100 (China) |
| ABSTRACT |
| 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. |
| Key Words: pedo-transfer function, retardation factor, soil basic properties, soil solute transport |
| Citation: Wang, Y. and Zhang, Y. P. 2001. Quantitative effect of soil texture composition on retardation factor of K+ transport. Pedosphere. 11(4): 377-382. |
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