摘要
根据土壤水动力学、地表能量平衡、空气动力学理论建立了越冬期土壤冻融条件下土壤—大气连续体的水热传输模型，包括冻融条件下土壤水热迁移子模型、地气间水热交换子模型。在该模型的基础上，模拟了北京地区冬灌对越冬期土壤水分状况的影响，从理论上得到了冬灌具有贮水作用的结论，并分析了合理的冬灌定额。
Based on the theory of soil water dynamics, the principle of energy budget on soil surface, and the theory of aerodynamics, a model of coupled transfer of the moisture and heat in soil atmosphere continuum during soil freezing and thawing is established. The model is composed of two submodels, i.e., the model of soil water and heat transfer and the model of water and heat exchange between soil and atmosphere interface. The model is used to simulate the effect of winter irrigation on soil water regime in Winter. The result shows that winter irrigation is effective for water storage in soils. Moreover, the rational winter irrigation quota is analyzed.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
1997年第3期65-70,共6页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家自然科学基金
国家教委博士点基金
关键词
冬灌
数值模拟
土壤水分
灌溉
Winter irrigation Soil freezing and thawing Soil moisture regime Coupled transfer soil water and heat Soil evaporation Numerical simulation
