The grain yield is influenced by many complex factors, and it has the characteristics of random and fluctua- tion, so this paper proposed a grain yield prediction model based on grey theory and Markov model. Firstly, the grey re- lational grade was used to screen influencing factor to build the grain yield prediction based on grey model, and then the Markov process was used to modify the forecasting error, making the prediction accuracy increases greatly. The simula- tion results show that the proposed algorithm has better prediction a...
