| 土壤液土比对塿土NH4+运移阻滞因子的影响 |
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| 引用本文： | 王 玉,张一平.土壤液土比对塿土NH4+运移阻滞因子的影响[J].西北农林科技大学学报(社会科学版),2002,30(1):43-46. |
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| 作者姓名： | 王 玉 张一平 |
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| 作者单位： | 西北农林科技大学,资源与环境学院,陕西,杨陵,712100 |
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| 基金项目： | 国家自然科学基金资助项目 ( 4 990 10 0 9)，原西北农业大学青年基金资助项目 |
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| 摘 要： | 通过土娄土不同土壤液土比条件下 NH+4 饱和流运移试验 ,定量描述了土壤液土比对 NH+4 运移阻滞因子的影响。结果表明 ,土壤液土比由 0 .36 72增加到 0 .7134 ,相应的 NH+4 饱和流运移阻滞因子由 7.494减小到4.40 9,具有明显的土壤液土比效应 ;NH+4 饱和流运移阻滞因子与土壤液土比呈极显著线性负相关。
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| 关 键 词： | 溶质运移 土壤液土比 阻滞因子 |
| 文章编号： | 1000-2782(2002)01-0043-04 |
| 收稿时间： | 2001/2/21 0:00:00 |
| 修稿时间： | 2001年2月21日 |
Effects of solution/soil ratios on exchangeable NH4+ retardation factor |
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| AN Shao-shan,CHANG Qing-rui,LI Bi-cheng,WEN Zhi-guo.Effects of solution/soil ratios on exchangeable NH4+ retardation factor[J].Journal of Northwest Sci-Tech Univ of Agr and,2002,30(1):43-46. |
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| Authors: | AN Shao-shan CHANG Qing-rui LI Bi-cheng WEN Zhi-guo |
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| Institution: | (College of Resources and Environment,Northwest Sci-Tech University of Agriculture and forestry,Yangling,Shannxi,712100,China) |
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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.NH + 4 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 NH + 4 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. |
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| Keywords: | soil solute transport solution/soil ratio retardation factor |
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