| 滞后效应对冬小麦根系吸水的影响 |
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| 引用本文： | 黄明斌,康绍忠. 滞后效应对冬小麦根系吸水的影响[J]. 西北农业学报, 1997, 6(2): 68-72 |
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| 作者姓名： | 黄明斌 康绍忠 |
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| 作者单位： | [1]中科院,水利部水土保护研究所土壤侵蚀与早地农业国家 [2]西北农业大学,水利部水土保护研究所土壤侵蚀与早地农业国家 |
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| 基金项目： | 中科院“百人计划”资助项目 |
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| 摘 要： | 根据一维土柱垂直入渗，再分布和根系吸水试验，用有限差分法进行了考虑和忽略滞后效应的数学模拟，分析了娄土再分过程中土壤含水量。水势的分布，在此基础上又借助于根区土壤水分运动方程计算了根系吸水速率的剖面分布。研究结果表明，考虑滞后效应的准确性较高。
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| 关 键 词： | 滞后效应 根系吸收 小麦 |
| 收稿时间： | 1995-12-29 |
| 修稿时间： | 1996-09-18 |
Effect of Soil Water Hysteresis on Winter Wheat Roots Uptake Water |
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| Huang Mingbin and Kang Shaozhong. Effect of Soil Water Hysteresis on Winter Wheat Roots Uptake Water[J]. Acta Agriculturae Boreali-occidentalis Sinica, 1997, 6(2): 68-72 |
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| Authors: | Huang Mingbin and Kang Shaozhong |
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| Affiliation: | State Key Laboratory of Soil Erosion, Dryland Farming on Loess Plateau, Institute of Soil, Water Conservation, Academia Sinica, Ministry of Water Resources; Yangling Shaanxi 712100;Northwestern Agricultural University, Yangling Shaanxi 712100 |
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| Abstract: | The experiments of soil water redistribution and roots uptake water were done in the vertical columns.A finite difference method incorporating Mualem''s model were used to investigate the sensitivity of hysteresis based on computed water content profile and rates of roots uptake water in the volumns.Comparing simulated results with measured values showed that the accuracy of the involved hysteretic model was better than that of the ignored hysteretic models. |
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| Keywords: | Soil water hysteresis Soil water redistribution Roots uptake water |
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