Study on Driving Factors of Grain Yield Change in Hunan Province from 1995 to 2015
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This paper selects the grain production data of Hunan Province from 1995 to 2015, and based on the theoretical basis of econometric geography, several mathematical analyses are performed on this data. A series of data surveys were used to explore various elements related to grain production in Hunan Province. The grain output between 1995 and 2015 in Hunan Province was used as the dependent variable. , Per capita GDP, effective irrigated area, and rural population are independent regression models. The results show that the main factors affecting Hunan's grain output are fertilizer application, total power of agricultural machinery, GDP per capita, effective irrigated area, and rural population. . The increase in the amount of chemical fertilizer application is one of the main factors leading to the increase in grain output in Hunan Province. At the same time, the effective irrigation area also has an impact on grain output. The total power of agricultural machinery has also greatly promoted the grain output. Per capita GDP and rural population The correlation between these two factors and grain yield is also strong, and the impact of crop planting area on grain yield is not significant.
Grain yield,principal component analysis,regression analysis, correlation analysis