Influence of Humic Acid on the Adsorption Behavior of Phosphorus in Agricultural Soil

LI Chun-yue; DANG Ting-hui; WANG Wan-zhong; LIU Wen-zhao

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Influence of Humic Acid on the Adsorption Behavior of Phosphorus in Agricultural Soil

更新时间：2024-11-07

- Influence of Humic Acid on the Adsorption Behavior of Phosphorus in Agricultural Soil
- Vol. 25, Issue 3, (2011)
- 作者机构：
  
  1. 陕西师范大学西北国土资源研究中心,陕西,西安,710062
  2. 西北农林科技大学水土保持研究所,陕西杨凌7121002. 西北农林科技大学水土保持研究所,陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：
  CLC： S158.5
- Published：2011
- 稿件说明：
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LI Chun-yue, DANG Ting-hui, WANG Wan-zhong, et al. Influence of Humic Acid on the Adsorption Behavior of Phosphorus in Agricultural Soil[J]. 2011, 25(3).
DOI：

LI Chun-yue, DANG Ting-hui, WANG Wan-zhong, et al. Influence of Humic Acid on the Adsorption Behavior of Phosphorus in Agricultural Soil[J]. 2011, 25(3). DOI：

摘要

土壤有机腐殖酸类物质具有巨大的比表面积和表面活化基团

在土壤污染物和养分的吸附、利用和转化过程中起着重要作用。该研究选取5种中国典型农区土壤

采用增加和减少有机腐殖酸类物质含量的方法

设置不同含量梯度

利用振荡平衡法来定量研究不同腐殖酸含量对磷素吸附特性的影响

并对其利用Freundlich、Langumuir和Temkin方程来进行定量化拟合分析研究

试图定量探讨有机腐殖酸类物质对磷素吸附行为的影响。研究结果表明:Freundlich、Langumuir和Temkin这3种方程均可对磷素吸附特征进行拟合

但拟合相关性以Freundlich最好

对于不同土壤而言

对磷素吸附拟合方程的适应性

以Freundlich方程对黑土和红土最好

塿土和黑垆土次之

潮土最差。加入腐殖酸明显地减少土壤对磷素的吸附量和吸附速率。腐殖酸对于土壤磷素有一定的活化激发作用

无论是增加还是减少腐殖酸时

黑土和红土对磷素的最大吸附量变化比例不是很大

而塿土和黑垆土变化最大

可以减少50%～60%左右

而潮土次之。腐殖酸可作为土壤P素增效剂

改善肥料物理性状

提高其稳定性和有效性

尤其是在黄土高原石灰性土更为有效。

Abstract

The huge specific surface area and surface active group are two typical properties of humic acid.These characters made the humic acid have direct effect on the soil pollution

nutrient fixation

nutrient utilization and nutrient transformation.We used the shock equilibrium method to research how the humic acid affects phosphorus adsorption by change the concentration of humic acid in five typical soils in China.Freundlich

Langumuir and Temkin models were used to quantify the influence degree of humic acid on ...

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