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本文研究了初含水率、干燥周期、料层厚度相同时，不同供热方式（热风、热风与辐射、热风与辐射并加湿）的白菜种子在固定床的干燥动力学及其活性，与传统的只热风供热相比，当干球温度相同时辐射加热风干燥的种子终含水率比低１３．８％、发芽率比高０．３％，而辐射加热风并加湿干燥其终含水率比低５．８％，发芽率比高０．８％。为确保种子活力，建立了褚－杨白菜种子临界温度Ｔｃｖ方程，并已验证其正确性．该方程为蔬菜种子干燥提供了理论基础并有重要的工程意义。
In this paper, the drying kinetics and activity of cabbage seeds in fixed bed under different heating modes (hot air, hot air and radiation, hot air, radiation and humidification) were studied when the initial moisture content, drying cycle and material thickness were the same. Compared with the traditional Only hot air heating compared to the same dry bulb temperature when the radiation drying wind dried seed final moisture content ratio of 13.8% lower than the high germination rate 0.3%, while the radiation heating air and humidification drying its final moisture content ratio Low 5.8%, high germination rate of 0.8%. In order to ensure the vitality of seeds, the Tcv equation of Chu-Yangbaoci seed’s critical temperature was established and its correctness was verified. The equation provides the theoretical basis for vegetable seed drying and has important engineering significance.