| Application of Van Genuchten model to analysis of soil moisture characteristic curve |
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| DOI：10.7606/j.issn.1000-7601.2009.02.33 |
| Key Words: soil moisture characteristic curve tillage Van Genuchten model nonlinear curve fitting nonlinear regression function |
| Author Name | Affiliation | | WANG Xiaohua | College of Water Conservency and Civil Engineering,Huhhot,Inner Monggolia 010018,China | | JIA Keli | College of Water Conservency and Civil Engineering,Huhhot,Inner Monggolia 010018,China | | LIU Jinghui | College of Agronomy Inner Mongolia Agricultural University,Huhhot,Inner Monggolia 010018,China | | LI Lijun | College of Agronomy Inner Mongolia Agricultural University,Huhhot,Inner Monggolia 010018,China |
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| Abstract: |
| Two useful functions of Matlab software are used, namely, nonlinear curve fitting and nonlinear regression function.The soil moisture characteristic curves under zero tillage and conventional tillage are analyzed.Van Genuchten model is used to model the soil characteristic curves under the conditions of zero tillage and conventional tillage.The results show that the nonlinear regression function has better adaptability.Van Genuchten model can be used in soil moisture analysis under different tillage conditions. |
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