土壤中磷吸附的能量特征 |
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引用本文: | 吕家珑,刘思春,张一平,钟永红. 土壤中磷吸附的能量特征[J]. 土壤通报, 2000, 31(6): 244-247 |
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作者姓名: | 吕家珑 刘思春 张一平 钟永红 |
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作者单位: | 1. 西北农业大学资源与环境科学系,陕西杨凌,712100 2. 农业部土肥总站,北京,100020 |
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摘 要: | 应用同位素 ( 32 P)示踪法 ,对陕西省四种土壤中磷素运移动力学特征进行研究得出 :( 1 )提出溶质运移动力学研究命题具有必要性和实际意义 ;有助于进一步对溶质运移机理进行探讨 ;( 2 )将过渡态理论移植到磷运移动力学中加以应用是可行的 ,所求出的磷运移活化能 (E y)和假热力学参数———活化焓(△H y)、活化自由能 (△G y)和活化熵 (△S y)可从不同的角度反映出磷运移过程中的能量变化 ,本文拟就这方面作一探讨性研究
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关 键 词: | 溶质运移动力学 过渡态理论 假热力学参数 |
文章编号: | 0564-3945(2000)06-0244-04 |
修稿时间: | 1999-04-12 |
Energy characters of phosphorus adsorption in soil |
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Abstract: | The experiments were conducted by using an isotopic tracer technique ( 32 P) to investigate P transport kinetics in four types of soils with three different treatments (air dried soil, air dried soil after eliminating CaCO 3, and undisturbed soil). The proposition of solte transport kinetics should be used with care if someone wants to go inside into the mechanisms of solute transport. In addition, it is feasible to apply the transition theory for the study of phosphorus transport kinetics, and then the pseudo thermodynamic parameters can reflect energy characters of phosphorus transport from diffenent aspects. |
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Keywords: | Solute transport kinetics Transition theory Pseudo thermodynamic |
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