Application of Gray Model to predict grain output in the Minqin County based on Matlab Language

Based on the past data of the grain output of the Minqin County in Gansu Province, the GM (1,1) predicting model was operated with the support of the MATLAB software and its accuracy was tested in this study, which was used to predict the grain output of the Minqin County for each year from 2011 to 2015 and periods of 2011-2019, 2020-2028 and 2029-2037. The predictive results of model showed that the grain output of the Minqin County increased in the next few years, but its increase rate was not much, indicating that the growth potential of grain output was low. This study proposed that the development of grassland agriculture made sure food security and improved the worsening ecological environment in the Minqin County by adjusting the proportion of grain crop, cash crop and grass, implying that speeding up the development of grassland agriculture was a necessary prerequisite to sustainable development of Minqin County, which could be used to provide theoretical basis for policymaker to grassland agriculture was a necessary prerequisite to sustainable development of Minqin County, which could be used to provide theoretical basis for policymaker to present the development plans of Minqin County.