| Evaluation of K-supplying power of soils and their particle fractions by electro-ultrafiltration (EUF) |
| ZHENG Wen-Juan and BAO Shi-Dan |
| Nanjing Agriculturat Uniuersity, Nanjing 210095 (China) |
| ABSTRACT |
| The results from comparative study of the EUF-K values of four different soils and of their various particle fractions (< 2μm, 2-10μm and 10-50μm) showed that the EUF-K values were related to the composition of clay minerals and the soil particle size. The EUF-K values (0-35 min) were closely related to the amount of rapidly available K and part of non-exchangeable K of soils. Biological experiments proved that EUF technique was an effective method for evaluating soil K-supplying power. |
| Key Words: biological experiment, clay minerals, EUF-K, particle composition |
| Citation: Zheng, W. J. and Bao, S. D. 1995. Evaluation of K-supplying power of soils and their particle fractions by electro-ultrafiltration (EUF). Pedosphere. 5(1): 75-82. |
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