摘要
研究了低丘红壤不同坡位对持水特性及孔隙状况的影响，发现上坡10cm土层1～50μm的孔径孔隙度高于下坡，而上坡100cm土层1～50μm的孔径孔隙度低于下坡；上坡10cm土层不同土壤水吸力下的持水量显著低于相应的下坡，而上坡100锄土层不同土壤水吸力下的持水量显著高于相应的下坡；用Van Genuchten方程对红壤水分特征曲线进行拟合，拟合效果较好。
The influence of slope position on red soil water retention and porosity was studied in low hilly area. The results showed that the percent of pore size of 1 ～ 50μm at upper slope was higher than that of lower slope at lOcm horizon, but it was lower than lower slope at lOOcm horizon. Soil water retention at upper slope was significantly lower than that of lower slope at lOcm horizon, but it was contrary at 100cm horizon. Red soil water characteristics curve was successfully simulated with Van Genuchten equation.
出处
《江西农业学报》
CAS
2007年第3期26-28,共3页
Acta Agriculturae Jiangxi
基金
中德合作项目和国家自然科学基金资助项目(40071044)
关键词
红壤
持水特性
孔隙度
坡位
Red soil
Water retention
Porosity
Slope position
