| 低丘红壤不同坡位持水特性的比较 |
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| 引用本文： | 景元书,范永强. 低丘红壤不同坡位持水特性的比较[J]. 江西农业学报, 2007, 19(3): 26-28 |
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| 作者姓名： | 景元书 范永强 |
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| 作者单位： | 中国科学院,南京土壤研究所,江苏,南京,210008;南京信息工程大学,应用气象学院,江苏,南京,210044;南京信息工程大学,应用气象学院,江苏,南京,210044 |
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| 基金项目： | 中-德合作项目 , 国家自然科学基金 |
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| 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100cm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。
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| 关 键 词： | 红壤 持水特性 孔隙度 坡位 |
| 文章编号： | 1001-8581（2007）03-0026-03 |
| 收稿时间： | 2006-11-12 |
| 修稿时间： | 2006-11-12 |
Slope Position Difference of Red Soil Water Retention in Low Hilly Area |
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| JING Yuan-shu,FAN Yong-qiang. Slope Position Difference of Red Soil Water Retention in Low Hilly Area[J]. Acta Agriculturae Jiangxi, 2007, 19(3): 26-28 |
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| Authors: | JING Yuan-shu FAN Yong-qiang |
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| Affiliation: | 1. Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; 2. College of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China |
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| Abstract: | 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 10cm horizon,but it was lower than lower slope at 100cm horizon.Soil water retention at upper slope was significantly lower than that of lower slope at 10cm horizon,but it was contrary at 100cm horizon.Red soil water characteristics curve was successfully simulated with Van Genuchten equation. |
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| Keywords: | Red soil Water retention Porosity Slope position |
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