| 摘要: |
| 采用连续液流法研究了黄腐酸处理对5种黄土性土壤H2PO2-1吸附、解吸动力学性质及有效性的影响。结果表明:①黄腐酸处理对H2PO2-1吸附、解吸动力学模型的拟合性无影响,但能使H2PO2-1的吸附速度及吸附量分别降低16.7%～66.7%及15.3%～65.4%,解吸速度及解吸量分别增加14.3%～94.4%及10.8%～81.4%;②黄腐酸处理能使磷的有效系数降低38.3%～72.0%,H2PO2-1的有效性大幅度提高。黄腐酸对黄土性土壤H2PO2-1有明显的活化作用。 |
| 关键词: 磷吸附动力学，磷活化，黄腐酸，黄土性土壤 |
| DOI： |
| 分类号:S153.3 |
| 基金项目:国家自然科学基金资助项目 |
|
| The Effeet of Fuvic Acid on the Kinetic Charaeteristies ofH2PO2-1 Absorption and Desorption in Loessial Soil |
|
Xue Quanhong Li Ruixuel Yang Souying Li Junke Wei Qingfeng
|
| Abstract: |
| The effect of fuvic aeid (FA) on the kinetic characteristics of H2PO2-1 absorption-desorption and the H2PO2-1 availability in loessial soil was studied by using the
continuous fluid flow method.The results of the kinetic models was not affected by the
FA treatment,but the velocity and capacity of the H2PO2-1 absorbing decreased by
16.7%～66.7% and 15.3%～65.4%,respectively.The H2PO2-1 desorbing velocity and
capacity inereased by 14.3%～94.4% and 10.8%～81.4%,respeotively.The available
coeffieients of HZPOJ’decreased by 38.3%～72.0% after the FA treartment as well. |
| Key words: H2PO2-1 absorbing kinetics,fuvic acid,H2PO2-1 aetivation,loessial soil |
