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Abstract 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 weather 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. Key words strip mulch, soil moisture and temperature regimes, model, simulation