The model of
safe drying temperature for rice seed was developed based on kinetic models of germination and the glass transition
temperature model using free volume theory of polymer, and proper temperature of rice seed drying can be calculated in order to obtain proper germination rate using this model. In order to determine the coefficient of the model of
safe drying temperature of rice seed, the drying experiment of rice seed was completed using thin layer drying experiment device at various initial moisture contents of rice kernel and heated air temperatures, and germination experiment of rice seed was carried out in constant temperature tank. The computer simulated safe temperature during drying that ensures high
germination ratio was given based on the model of rice seed safe drying temperature. The results indicate that the curve of safe drying temperature has the bottom and the bottom increases as the moisture content of rice seed decreasing. In the end, some suggestions for rice seed drying temperature were given.