The author attempts to to justify the necessary process parameters controlled aeration of grain for the purpose of drying. Applied a systematic approach. The drying process is presented in the form of interaction of the "drying agent" and "grain" layer. By using elements of information theory evaluated informative value of each of the elements in the system and the system as a whole on the basis of data on the state of the grain layer. Position aeration considered as objects with distributed parameters. It has been established that adequate process control aeration sufficient to control the parameters of drying agent inlet cereal layer.
Keywords: grain, elementary layer, active ventilation, drying, temperature, humidity, drying, agent, informative, entropy, equilibrium, bit.