摘要
采用结壳法对三种滨海盐渍土的非饱和导水率进行了研究。结果表明：非饱和导水率与负压水头呈指数曲线关系，当负压水头达１０ｋＰａ时，三种滨海盐渍土的非饱和导水率渐趋一致；在质地基本相同的情况下，土壤盐分、容重、孔隙度以及有机质含量均对非他和导水率有很大的影响；结壳层的组成不同对测定非饱和导水率也有一定的影响，但结壳法完全能运用于滨海盐渍土非饱和导水率的研究。
The crust method was used to study the unsaturated hydraulic conductivity of three kinds of seashore saline soil. The results were as follows: 1. There was a exponential curve relationship between the unsaturated hydraulic conductivity and the negative pressure water head. When the negative pressure water head rose to 10 kPa,the unsaturated hydraulic conductivity of the three kinds would tend to a constant. 2. The unsaturated hydraulic conductivity was affected by the salt content, bulk density, porosity and organic matter of the three kinds of seashore saline soil when the textures were alike. 3. Crust layers with different textures also impaired the value of unsaturated hydraulic conductivity, but the crust method could be completely applied to studying unsaturated hydraulic conductivity of the seashore saline soil.
出处
《南京农业大学学报》
CAS
CSCD
北大核心
1995年第3期68-71,共4页
Journal of Nanjing Agricultural University
基金
国家自然科学基金
关键词
非饱和导水率
滨海盐渍土
结壳法
unsaturated hydraulic conductivity
seashore saline soil
crust method
