| 摘要: |
| 应用同位素(32P)示踪法研究了陕西省4种土壤(黄绵土、黑垆土、塿土和黄褐土)的3种处理状态(风干、去CaCO3风干和原状)磷素运移特征。结果表明,平衡方法和CXTFIT程序拟合法求出的土壤磷素运移参数,都可以较好地描述磷素运移过程的特征;由于CXTFIT程序拟合法直接应用穿透曲线拟合,还可应用于原状土壤中磷运移参数的推求,所以,与平衡法相比CXTFIT程序拟合法更优。 |
| 关键词: 同位素示踪，磷素运移参数，平衡法，CXTFIT程序拟合法 |
| DOI： |
| 分类号:S153.61 |
| 基金项目: |
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| Comparison of Two Methods in the Definition of Phosphorous Transport Parametres |
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| Abstract: |
| The phosphorus transport character in 3 states (wind dry soil,wind dry
soil after CaCO3 elimination and natural soil) of 4 kinds of soils (loessial soil, black Lu
soil, Lou soil and yellow cinnamon soil) in Shaanxi Province was studied by using isotopic tracer (32P).The results showed that the phosphorus transport parametres calculated by two kinds of method equibrium and CXTFIT program methods were able to describe the process of phosphorus transport.The CXTFIT program method was superior
to the equibrium method because the former could be directly applied to breakthrough
curve and to determining the phosphorus transport parametres. |
| Key words: isotopic tracer,phosphorus transport parametre,equibrium method,CXTFIT program method |
