ISWC OpenIR  > 水保所知识产出(1956---)
不同胶结物质对黄绵土团聚体形成的影响
尚应妮1; 霍 娜1,2,3; 常闻谦1
2017
Source Publication水土保持学报
Volume31Issue:2Pages:204-208
Abstract

通过室内培养试验,采用 PAM 、腐殖酸、壳聚糖、硫酸铝 4 种土壤结构胶结剂对促进黄绵土 <0.25
mm 团聚体形成大团聚体的过程和效果开展研究。结果表明:( 1 )从新形成土壤团聚体的粒径分布来看, 4
种胶结剂均有利于 <0.25mm 粒径的团聚体形成更大的团聚体,尤其是对于增加 >5mm 的土壤团聚体含
量效果明显;( 2 ) 4 种胶结剂施入 <0.25mm 黄绵土团聚体,均可有效地增加黄绵土团聚体的平均重量直径
和几何平均直径,提高了团聚体稳定性,且随胶结剂施用浓度的增加呈升高趋势;( 3 )不同胶结剂对促进黄
绵土团聚体形成的能力表现为腐殖酸 ≈PAM> 壳聚糖 > 硫酸铝。研究结果可为合理利用外源胶结剂改善
土壤结构提供一定的科学依据。

Other Abstract

: In this study , PAM , humic acid , chitosan and aluminum sulfate were used as soil cementing
materials to research the processes and effects on the formation of large aggregates from <0.25mm aggregates in
the loessial soil.The results showed that :( 1 ) Based on the analyses of soil particle size distribution , soil
cementing  materials used in this study
were all beneficial for the formation of>2mm aggregates , especially
for>5mm aggregates. ( 2 ) All of these four cementing  materials could effectively  increase the mean weight
diameter and mean geometric diameter of the loessial soil , and enhance the stability  of aggregates , which
increased with the increasing  application rate of the cementing
materials. ( 3 ) Different soil cementing  materials
had different ability  to improve soil structure
, and showed the order of PAM≈humic acid>chitosan>aluminum
sulfate.The findings obtained from this work will provide theoretical supports for applying  soil cementing
materials to improve soil structure scientifically.

Keyword土壤结构胶结物质 黄绵土 团聚体形成 团聚体稳定性
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8364
Collection水保所知识产出(1956---)
Affiliation1.西北农林科技大学资源环境学院,陕西 杨凌 712100
2.西北农林科技大学水土保持研究所, 陕西 杨凌 712100
3.中国科学院水利部水土保持研究所,陕西 杨凌 712100
Recommended Citation
GB/T 7714
尚应妮,霍 娜,常闻谦. 不同胶结物质对黄绵土团聚体形成的影响[J]. 水土保持学报,2017,31(2):204-208.
APA 尚应妮,霍 娜,&常闻谦.(2017).不同胶结物质对黄绵土团聚体形成的影响.水土保持学报,31(2),204-208.
MLA 尚应妮,et al."不同胶结物质对黄绵土团聚体形成的影响".水土保持学报 31.2(2017):204-208.
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