摘要
采用人工模拟降雨溅蚀方法,通过采样制作土壤切片,研究聚丙烯酰胺(PAM)对黄土结皮形成的影响。结果表明,PAM能改善土壤结构状况,显著提高土壤团聚体的稳定性,从而有效地抑制土壤结皮形成;但是随着降雨历时的延长,这种抑制作用逐渐被雨滴破坏;试验筛选出PAM-1抑制土壤结皮形成效果较好。
Through rainfall simulating in laboratory, and observation on soil sample slices, this study intended to disclose the impact of polyacrylamide on the development of loess soil surface crust. The results showed that polyacrylamidecould reform soil structure and increase the stabilization of soil aggregates, so soil surface crust could be controlled effectively. But with the process of rainfall, this function would be destroyed. Moreover, the effect of PAM-1 on controlling crust development was better.
出处
《水土保持学报》
CSCD
北大核心
2004年第4期65-68,共4页
Journal of Soil and Water Conservation
基金
中国科学院地理科学与资源研究所创新工程项目(CXIOG-A00-05-02)
国家科技攻关项目"黄土高原北部连片沙地开发利用技术示范区"(靖边2002BA517A04)资助
