Ecophysiological characteristics of flag leaf of winter wheat in HuangHuaiHai Plain Research on the earagriculture mode of~ nl‘ce low dissipation in Huanghuaihai Plain Effect of nitrogen amendment and straw-stubble input on accumulation of soil organic matter in typical farmlands of Huang-Huai-Hai Plain Climatic potential productivity of winter wheat and summer maize in Huanghuaihai Plain in 2011-2050. Ecophysiological responses and hyperspectral characteristics of winter wheat (Triticum aestivum) under drought stress A Discussion on the Eco-agricultural Ways for Comprehensive Agricultural Development in Huanghuaihai Plain Effects of straw incorporation and N fertilization on soil respiration during maize (Zea mays L.) growth in Huanghuaihai Plain Assessment of the yield loss of winter wheat caused by dry-hot wind in Huanghuaihai Plain based on the hazard index of dry-hot wind Evaluation of the germination characteristics and drought resistance of green manure crops under PEG stress