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透明型膜覆盖后， 土－气界面热平衡状况发生变化， 使得覆盖后产生增温效应。通过边界层热平衡分析， 建立了一维热传导数学模型， 模型中考虑覆盖层的光学特性， 忽略土壤水分运动对土壤温度分布的影响， 经与土柱实验数据检验， 表明模型具有良好的精度且塑膜覆盖对土壤热状况有强烈的影响。着重探讨了表土含水率不同所产生的热效应的差异。
After the transparent membrane is covered, the thermal equilibrium condition of the soil-air interface changes, resulting in a warming effect after covering. Based on the thermal equilibrium analysis of the boundary layer, a one-dimensional mathematical model of heat conduction was established. The optical properties of the overburden were considered in the model. The influence of soil moisture on soil temperature distribution was ignored. The experimental data showed that the model had good accuracy and plasticity Membrane coverage has a strong effect on soil thermal status. The differences of thermal effects caused by the different moisture content of topsoil are mainly discussed.