Demonstration practices and effects of new agro-technologies developed at Luancheng Agro-Ecosystem Experimental Station of Chinese Academy of Sciences over the last 30 years Food security should be the ultimate goal of agricultural modernization in China Landscape, circulation system design and biodiversity reestablishment in eco-agriculture Prospects For Agricultural Modernization in China--Modern Intensive Sustainable Agriculture Chinese Agricultural Modernization and the Analysis of the Eco-economy at Its Different Developing Stage