摘要
基于大田耕作土壤剖面类型测试和室内土壤入渗试验,并与均质土壤剖面对比的方法,分析讨论了水分在犁底层和上壤下沙土壤剖面中的入渗特性及其入渗模型。试验结果表明:土壤剖面构型对土壤的入渗能力有明显影响,与均质土壤相比,上述两种剖面的土壤累积入渗量减小,各入渗参数减小,入渗能力减弱。研究结果可以为特殊土壤剖面土壤入渗参数的确定提供参考。
Field site and laboratory experiment of water infiltration into a layered soils which include plough pan and loam-sand section were conducted. Effects of the two types of layered soil profile on infiltration capacity were analyzed and discussed on the basis of two infiltration parameters of Kostiakov infiltration equations and force of soil current. The experimental results indicate that soil configurations have obvious influence on soil infiltration capacity,and that the infiltration parameters show a trend of decrease. The result is of practical meaning in determining field infiltration parameters and in decreasing field infiltration.
出处
《太原理工大学学报》
CAS
北大核心
2009年第3期307-309,322,共4页
Journal of Taiyuan University of Technology
基金
国家自然科学基金项目(40671081)
山西省自然科学基金项目(20051074)
关键词
质地剖面
层状土
累积入渗量
入渗率
犁底层
soil texture profile
stratified soil
cumulative infiltration amount
infiltration rateplough pan
