This article is based on the imbalance state of China's marine industries, focuses on how to evaluate and calculate marine industries’ development level, and to enhance the comprehensive competitiveness. Based on the present situation of China’s marine industries, we construct the...

On the basis of empirical data concerning "four agricultural subsidies" in Chongqing City, we establish panel data model to analyze the general effect of "four agricultural subsidies" on grain yield, and the structural effect of "four agricultural subsidies" on grain yield. Based on the F-test...

By using correlation analysis method, regression analysis method and time sequence method, we combine time and space, to establish grain geld spatio-temporal regression prediction model of Henan Province and ail prefecture-level cities. At first, we use the grain geld in prefecture-level cities...