ISWC OpenIR  > 水保所知识产出(1956---)
尚应妮1; 霍 娜1,2,3; 常闻谦1
Source Publication水土保持学报

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

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
Document Type期刊论文
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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