秸秆和硫酸铝改良剂对苏打盐碱土吸附腐殖酸性能的影响

张鑫; 赵兰坡; 赵兴敏; 王鸿斌; 高玉

doi:10.13870/j.cnki.stbcxb.2019.04.043

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秸秆和硫酸铝改良剂对苏打盐碱土吸附腐殖酸性能的影响

更新时间：2025-03-12

- 秸秆和硫酸铝改良剂对苏打盐碱土吸附腐殖酸性能的影响
- Effects of Straw and Aluminum Sulfate on the Adsorption of Humic Acids on Soda Saline-alkali Soil
- 水土保持学报 2019年33卷第4期页码：308-314
- 作者机构：
  
  吉林农业大学资源与环境学院, 吉林省商品粮基地土壤资源可持续利用重点实验室,长春,130118
- 作者简介：
  
  [ "张鑫(1994-),女,在读硕士研究生,主要从事农业面源污染研究。E-mail:18844142703@163.com" ]
- 基金信息：
  
  国家重点研发计划项目（2018YFD0300201）吉林省科技发展计划项目（20170204002SF）
- DOI：10.13870/j.cnki.stbcxb.2019.04.043
  中图分类号： X53
- 纸质出版：2019
- 稿件说明：
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张鑫, 赵兰坡, 赵兴敏, 等. 秸秆和硫酸铝改良剂对苏打盐碱土吸附腐殖酸性能的影响[J]. 水土保持学报, 2019,33(4):308-314.

ZHANG Xin, ZHAO Lanpo, ZHAO Xingmin, et al. Effects of Straw and Aluminum Sulfate on the Adsorption of Humic Acids on Soda Saline-alkali Soil[J]. 2019, 33(4): 308-314.
张鑫, 赵兰坡, 赵兴敏, 等. 秸秆和硫酸铝改良剂对苏打盐碱土吸附腐殖酸性能的影响[J]. 水土保持学报, 2019,33(4):308-314. DOI： 10.13870/j.cnki.stbcxb.2019.04.043.

ZHANG Xin, ZHAO Lanpo, ZHAO Xingmin, et al. Effects of Straw and Aluminum Sulfate on the Adsorption of Humic Acids on Soda Saline-alkali Soil[J]. 2019, 33(4): 308-314. DOI： 10.13870/j.cnki.stbcxb.2019.04.043.

摘要

为了揭示硫酸铝改良剂对苏打盐碱土在秸秆还田条件下固碳性能的影响，研究了添加秸秆和硫酸铝并于恒温条件下培养300天后的盐碱土对腐殖酸的吸附性能。结果表明：在腐殖酸吸附动力学中，秸秆和硫酸铝不同添加量条件下，盐碱土对腐殖酸的吸附均在120 min时达到平衡，准二级动力学方程拟合效果最好，R2值最高（0.936）。Langmuir方程和Freundlich方程均可较好地拟合盐碱土对腐殖酸的等温吸附。添加相同比例的玉米秸秆条件下，Langmuir方程拟合获得的最大吸附量分别表现为69.335，42.830，40.498，42.593 mg/g。而添加同等比例的硫酸铝改良剂条件下，最大吸附量分别表现为21.358，32.647，69.335，49.232，62.375，42.830 mg/g。

Abstract

Aluminum sulfate improver has a good effect on reducing the pH of soda saline and alkaline soil and promoting soil colloidal condensation and organic carbon accumulation. In order to reveal the effect of aluminum sulfate improver on the carbon sequestration performance of soda saline-alkali soil under straw returning conditions

the adsorption performance of saline-alkaline soil on humic acid was studied after adding straw and aluminum sulfate and culturing for 300 days under constant temperature conditions. The results showed that in the adsorption kinetics of humic acid

under the different addition conditions of straw and aluminum sulfate

the adsorption of humic acid by saline-alkali soil reached the equilibrium of the quasi-second-order kinetic equation at 120 min

R2. The highest value (0.936). Both the Langmuir equation and the Freundlich equation can better fit the isothermal adsorption of humic acid by saline-alkaline soil. Under the condition of adding the same proportion of corn stover

the maximum adsorption amount obtained by the Langmuir equation was 69.335

42.830

40.498 and 42.593 mg/g

respectively. Under the condition of adding the same proportion of aluminum sulfate improver

the maximum adsorption amounts were 21.358

32.647

69.335

49.232

62.375 and 42.830 mg/g

respectively.

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