Effects of Straw-Bentonite-PAM Improved Material on Sandy Soil Aggregate Structure

SUN Rong-guo; WEI Wu-si; MA Ming; LI Jia-jia; SHI Xiao-jan; ZHANG Yu-tao; WANG Ding-yong

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Effects of Straw-Bentonite-PAM Improved Material on Sandy Soil Aggregate Structure

更新时间：2024-11-07

- Effects of Straw-Bentonite-PAM Improved Material on Sandy Soil Aggregate Structure
- Vol. 25, Issue 2, (2011)
- 作者机构：
  
  1. 西南大学资源环境学院,三峡库区生态环境教育部重点实验室,重庆,4007152. 西南大学资源环境学院,三峡库区生态环境教育部重点实验室,重庆,400715
  2. 重庆市农业资源与环境研究重点实验室,重庆,400716
- 作者简介：
- 基金信息：
- DOI：
  CLC： S156.2S152.4
- Published：2011
- 稿件说明：
移动端阅览
SUN Rong-guo, WEI Wu-si, MA Ming, et al. Effects of Straw-Bentonite-PAM Improved Material on Sandy Soil Aggregate Structure[J]. 2011, 25(2).
DOI：

SUN Rong-guo, WEI Wu-si, MA Ming, et al. Effects of Straw-Bentonite-PAM Improved Material on Sandy Soil Aggregate Structure[J]. 2011, 25(2). DOI：

摘要

为改善沙质土壤团粒结构

以重庆市分布面积较大的冷沙黄泥为研究对象

将作物秸秆、膨润土和聚丙烯酰胺(PAM)按一定比例配制后作为改良材料

研究秸秆改良材料种类、改良材料剂量与配比、土培时间等因素对改良材料改良效应的影响。结果表明:秸秆改良材料可以增加沙质土壤1~5 mm团聚体的含量

不同秸秆改良材料改良效果不同

且随着改良材料剂量、PAM含量(<2%)的增加、土培时间(<60 d)的延长

沙质土壤1~5 mm团聚体含量呈现增加趋势;添加麦秆改良材料(添加量为10 g/kg土

配方中PAM含量为2%)的土样

在培养60 d后

1~5 mm团聚体含量为45.1%

为CK的2.12倍

自然条件下的1.9倍

对沙质土壤团粒结构改良效果最为明显。可见

秸秆改良材料可以改善沙质土壤团粒结构。

Abstract

A simulation experiment was carried out to improve aggregate structure of sandy yellow soil that distributes widely in Chongqing city.We designed the material made of straw

bentonite and PAM and detected its effects on improving the aggregata sturcture of sandy soil.The results indicated that: The proportion of 1~5 mm sandy soil aggregate increased in the presence of improved material

and would be different with different improved material

and also increased with the content of improved material and PAM(<2%...

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