| 摘要: |
| 通过塿土不同土壤液土比条件下NH4+饱和流运移试验，定量描述了土壤液土比对NH4+ 运移阻滞因子的影响。结果表明，土壤液土比由0.367 2增加到0.713 4，相应的NH4+饱和流运移阻滞因子由7.494减小到4.409，具有明显的土壤液土比效应；NH4+饱和流运移阻滞因子与土壤液土比呈极显著线性负相关。 |
| 关键词: 溶质运移 土壤液土比 阻滞因子 |
| DOI： |
| 分类号:S155 |
| 基金项目:国家自然科学基金资助项目(49901009)及原西北农业大学青年基金资助项目 |
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| Effects of solution/soil ratios on exchangeable NH4+ retardation factor |
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AN Shao-shan 1 CHANG Qing-rui 2 LI Bi-cheng 1 WEN Zhi-guo 2
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| Abstract: |
| The retardation factor is the important parameter of exchangeable solute transport,but the complete methods to obtain the retardarion factor are not available now.NH4+ transport experiments with various solution/soil ratios under saturated flow were carried out,and the quantitative effects of the solution/soil ratio on the retardation factor have been studied.The results showed that the retardation factor of NH4+ transport decreased significantly with increasing solution/soil ratios.As the solution/soil ratios increase from 0.367 2 to 0.713 4,the retardation factor decreases from 7.494 to 4.409.Statistically,it was significantly linearly negatively correlated with the solution/soil ratio. |
| Key words: soil solute transport solution/soil ratio retardation factor |
