薄层烘干理论是研究各种烘干工艺技术的基础。本研究首先扼要地介绍了前人对谷物(大麦和玉米籽粒)薄层烘干的研究情况,指出谷物薄层烘干常数K的数学模型中应包含M_0、T、V三个因素。然后用二次旋转正交组合试验设计方法,进行了小麦的薄层烘干实验,建立了小麦薄层烘干常数K的回归方程,为进一步对烘干系统进行分析或摸拟提供了必要依据。 The theory of thin layer drying is the basis for the study of various drying techniques. In this study, we briefly introduced the previous studies on the drying of thin layers of cereals (barley and maize kernels), and pointed out that the mathematical model of the drying constant K of the thin layer of grains should include three factors M_0, T and V. Then using the quadratic rotation orthogonal experimental design method, the thin layer drying experiment of wheat was carried out, the regression equation of the drying constant K of wheat thin layer was established, which provided the necessary basis for further analysis or simulation of the drying system .