| Aiming at the problems of agricultural mechanization level and yield of grain orientation mechanism, this article used the Granger causality test for causality verification agricultural mechanization and grain yield data in 1990-2011. The results showed that， China's grain output growth for mechanization enhanced the long-term with a strong role in promoting agricultural mechanization of food production and the long-term growth promoting effect was not obvious. The conclusion showed important guiding significance for the optimization of agricultural mechanization mechanism to improve China's grain output scientific and healthy growth. Finally, suggestions for the construction of China's agricultural modernization were put forward. |
