Transnational land use and its potential environmental consequence An outlook on modern ecological agriculture in Shandong Province Achievements and Developments of Ratooning Rice in South of China Influence Factors to Agricultural Technical Innovation in China THE DEVELOPMENT OF FIRE-RESISTANCE FOREST BELTS RESEARCH Plant allelopathy types and their application in agriculture The patterns innovation of agricultural technology prog ress in the Western Regions Time-series analysis of grain production characteristics in Guangdong Province from 1949 to 2006