水土保持学报2017，Vol.31Issue(2)：204-208,239,6.DOI:10.13870/j.cnki.stbcxb.2017.02.034
不同胶结物质对黄绵土团聚体形成的影响
Effects of Cementing Materials on the Formation of Loessial Soil Aggregates
摘要
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 ＜0.25 mm 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 ＞2 mm aggregates,especially for ＞5 mm 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.关键词
土壤结构胶结物质/黄绵土/团聚体形成/团聚体稳定性Key words
soil structural cementing material/loessial soil/aggregate formation/aggregate stability分类
农业科技引用本文复制引用
尚应妮,胡斐南,赵世伟,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):204-208,239,6.基金项目
国家自然科学基金重点项目“胶结物质驱动的土壤团聚体形成过程与稳定机制”(41330852) （41330852）
宁南山区脆弱生态系统恢复及可持续经营技术集成与示范项目(2015BCA01B01) （2015BCA01B01）
国家“十二五”科技支撑计划项目 （）
