Dynamic Changes of Humus in Inland Saline-alkali Soil in Field with Post harvest Crops Returning

LI Xue-ping; REN Jia-yun; LIU Zhao-hui; DONG Xiao-xia

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Dynamic Changes of Humus in Inland Saline-alkali Soil in Field with Post harvest Crops Returning

- Dynamic Changes of Humus in Inland Saline-alkali Soil in Field with Post harvest Crops Returning
- Bulletin of Soiland Water Conservation Vol. 32, Issue 6, Pages: 121-124(2013)
- 作者机构：
  
  1. 滨州学院城市与环境系,山东,滨州,256600
  2. 山东省农科院土壤肥料研究所,山东,济南,250100
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013
- 稿件说明：
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LI Xue-ping, REN Jia-yun, LIU Zhao-hui, et al. Dynamic Changes of Humus in Inland Saline-alkali Soil in Field with Post harvest Crops Returning[J]. Bulletin of Soiland Water Conservation, 2013, 32(6): 121-124.
DOI：

LI Xue-ping, REN Jia-yun, LIU Zhao-hui, et al. Dynamic Changes of Humus in Inland Saline-alkali Soil in Field with Post harvest Crops Returning[J]. Bulletin of Soiland Water Conservation, 2013, 32(6): 121-124. DOI：

摘要

采用室内培养试验的方法

研究了秸秆加入条件下内陆盐碱土的腐殖质及其组分(胡敏酸、富里酸)的动态变化。结果表明

在秸秆腐解过程中

盐碱土腐殖质、富里酸、胡敏酸含量均呈现持续上升趋势

分别平均增加了112.5%

269.54%和92.9%富里酸的含量明显高于胡敏酸的含量

是胡敏酸含量的约3~10倍。土壤的HA/FA(腐殖酸/富里酸)呈现出先增长后降低的趋势

并且在90d时达到平均最高值(0.283)。尿素添加量7.2g的处理土壤腐殖质含量在0.19%~0.38%

该处理秸秆分解的速率最快。土壤腐殖质和富里酸随着尿素含量梯度的增加呈现先上升

后下降

再上升的趋势

且分别平均增加了46.7%和55.3%胡敏酸的变化趋势与腐殖质相反

平均减少了14.3%HA/FA呈下降趋势

但下降趋势不明显。

Abstract

This paper studied the dynamics changes of soil humus and its composition〔humic acid(FA) and fulvic acid

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