| 任理,张瑜芳,沈荣开.条带覆盖下土壤水热动态的田间试验与模型建立[J].水利学报,1998,29(1):0076-0085 |
| 条带覆盖下土壤水热动态的田间试验与模型建立 |
| Field experiments and numerical simulation of soil water and heat regimes under the condition of summer corn partially covered by mulch strips |
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| DOI： |
| 中文关键词: 条带覆盖 水热动态 模型 模拟 |
| 英文关键词: strip mulch soil moisture and temperature regimes model simulation |
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| 中文摘要: |
| 描述了夏玉米生长期间麦秸条带覆盖(行间覆盖)条件下土壤水热动态的田间试验.在此基础上，采用交替方向有限差分法建立了模拟苗期条带覆盖下土壤二维水热迁移的数值模型.其中覆盖部分土壤表面的边界条件由能量平衡方程确定.模型的输入只需常规气象资料、土壤水热迁移参数及覆盖参数.数值计算结果表明，该模型具有一定的实用价值。 |
| 英文摘要: |
| The field experiments of soil moisture and temperature regimes under strip wheat straw mulch are introduced in this paper. A numerical model using the alternating direction implicit (ADI) finite difference method to study two-dimensional soil heat and water flow with a partial surface mulch cover is established. In the model, a soil surface energy balance equation is used to determine soil surface boundary condition of mulch data. The inputs required for the numerical simulations are common wather data, soil thermal and hydraulic parameters as well as mulch data. The heat flow model is verified with analytical solutions. The proposed model successfully simulates the field moisture content and temperature regimes under the condition of strip wheat straw mulch at summer seeding stage. |
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