Study on NPK Fertilizer and Nutrients Utilizing Efficiency under Sudangrass and Ryegrass Rotation Regime in Jianghan Plains Influences of rural households‘ income differences on living energy consumption and eco-environment: a case study of Jianghan Plain, China Variation features of micro-waterlogged topographic and ecological agriculture models in Jianghan Plain Late-Glacial and Postglacial Vegetation and Associated Environment in Jianghan Plain Preliminary study on the appropriate cultivating season of high-quality rice formation in Jianghan Plain Cycling and balance of copper in farmland ecosystem of Jianghan plain in Hubei Province STUDY ON THE ECOLOGICAL CHARACTERISTICS OF WATERLOGGING FIELD IN JIANGHAN PLAIN Effect of Fertilization on Yield of Forage Grass,Nutrient Uptake and Soil Properties under Sudangrass and Ryegrass Rotation Regime