| 农田水量平衡模型对作物根系吸水函数及蒸散公式的敏感性 |
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| 引用本文： | 龚元石,李保国.农田水量平衡模型对作物根系吸水函数及蒸散公式的敏感性[J].水土保持研究,1996,3(3):1-7. |
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| 作者姓名： | 龚元石 李保国 |
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| 作者单位： | 北京农业大学土壤和水科学系, 北京, 100094 |
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| 摘 要： | 以田间试验资料为基础,建立了一个农田水量平衡模型,探讨了它对作物根系吸水函数和蒸散公式的敏感性.结果表明.不同的根系吸水函数和蒸散公式对农田水量平衡模型的响应程度差异较大,根据与田间土壤水分实测结果比较,认为用Selim根系吸水函数和Penman-Monteith蒸散公式的组合模式能较好地模拟土壤水分变化过程.
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| 关 键 词： | 农田水量平衡 根系吸水函数 蒸散 敏感性 |
Sensibility of the Field Water Budget Model to Water Extraction Function by Roots and Evapotranspiration form |
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| Gong Yuanshi,Li Baoguo.Sensibility of the Field Water Budget Model to Water Extraction Function by Roots and Evapotranspiration form[J].Research of Soil and Water Conservation,1996,3(3):1-7. |
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| Authors: | Gong Yuanshi Li Baoguo |
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| Institution: | Department of Soil and Water Sciences, Beijing Agricultural University, Beijing, 100094 |
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| Abstract: | Based on the field observing data,a field water budget model was developed in this paper,and its sensibility to the water extraction function by roots and evapotranspiration form were studied.The results showed that the responsiveness was quite differ,while the various extraction functions and evapotranspiration forms were applied.Model predictions were in good agreement with the measured water content in the soil profile.if the Selim-extraction function and Penman Monteith form were used. |
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| Keywords: | field water budget water extraction function by roots evapotranspiration sensibility |
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