| 陕西省几种代表性土壤NH4+吸附、解吸动力学特征研究 |
| |
| 引用本文： | 薛泉宏,尉庆丰,高彦,石辉,曲东.陕西省几种代表性土壤NH4+吸附、解吸动力学特征研究[J].土壤学报,1996,33(2):129-137. |
| |
| 作者姓名： | 薛泉宏 尉庆丰 高彦 石辉 曲东 |
| |
| 作者单位： | 西北农业大学, 712100;西北农业大学, 712100;西北农业大学, 712100;西北农业大学, 712100;西北农业大学, 712100 |
| |
| 摘 要： | 采用连续液流法测定了五种土壤吸附、解吸ＮＨ＾＋４的动力学性质。研究表明：（１）ＮＨ＾＋４吸附、解吸平衡时间及反应速率，平衡时的吸附、解吸量及吸附平衡常数均随土壤粘粒和ＣＥＣ不同而变化；（２）不同动力学模型及同一模型对不同土壤的拟合性不同。
|
| 关 键 词： | 土壤化学动力学 NH^＋4 吸附动力学 解吸动力学 |
| 收稿时间： | 1994/12/4 0:00:00 |
KINETIC CHARACTERISTICS OF NH4+ ADSORPTION-DESORPTION FOR FIVE MAJOR SOILS IN SHAANXI PROVINCE |
| |
| Xue Quanhong,Wei Qingfeng,Gao Yan,Shi Hui and Qu Dong.KINETIC CHARACTERISTICS OF NH4+ ADSORPTION-DESORPTION FOR FIVE MAJOR SOILS IN SHAANXI PROVINCE[J].Acta Pedologica Sinica,1996,33(2):129-137. |
| |
| Authors: | Xue Quanhong Wei Qingfeng Gao Yan Shi Hui and Qu Dong |
| |
| Institution: | Northwest Agricultural University, 712100;Northwest Agricultural University, 712100;Northwest Agricultural University, 712100;Northwest Agricultural University, 712100;Northwest Agricultural University, 712100 |
| |
| Abstract: | The kinetic characteristics of NH4+ adsorption-desorption for five major soils in shaanxi province were studied by using the continuous fluid flow method.NH4+ adsorbing-desorbing equilibrium time and reaction rate,equilibrium adsorbing-desorbing capacity and adsorbing equilibrium constants changed with the soil clay content and CEC.Different kinetic models showed different fitting results to the data of experiment.First-order equation and Elovich equation were the best models for fitting to the data of NH4+ adsorbing and desorbing reac-dons respectively.NH4+ diffusion speed was the factor controlling the NH4+ adsorbing and desorbing rates.NH4+ desorbing rate increased significantly with raising temperature. |
| |
| Keywords: | Soil chemical kinetics NH4+ adsorbing kinetics NH4+ desorbing kinetics NH4+ adsorption NH4+ desorption |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《土壤学报》浏览原始摘要信息 |
| 点击此处可从《土壤学报》下载免费的PDF全文 |
