摘要
土壤水分特征曲线是土壤水吸力与含水率之间的关系曲线。此次试验利用压力膜仪测定银川北部盐渍土的土壤水吸力和含水率。对土壤水分特征曲线的Van-Genuchten模型采用Matlab软件和Microsoft Excel软件进行拟合。经过比较和分析后发现,用Microsoft Excel软件与Matlab软件拟合土壤水分特征曲线精度近似相同,但是Microsoft Excel软件对于不懂任何编程语言的人来说操作更为简便。
Soil moisture characteristic curve describes the relationship between water suction and moisture content in soil. This paper is aimed to measure the suction and moisture content by using pressure membrane analyzer in the northern area of Yin Chuan saline soil. Van - Genuchten model is used to fit soil moisture characteristic curve use by Matlab and Microsoft Excel. By comparative analysis, it was found that it had approximately the same accuracy of the soil moisture characteristic curve fitted by using Microsoft Excel and Matlab software. But it is more simple and convenient for people not knowing any pro- gramming language by using Microsoft Excel software.
出处
《湖北农业科学》
北大核心
2014年第1期56-58,113,共4页
Hubei Agricultural Sciences
基金
国家自然科学基金重大研究计划培养项目(91230111)
