Effects of Wheat-Residue Application and Site-Specific Nitrogen Manage- ment on Absorption and Utilization of Nitrogen, Phosphorus, and Potas-sium in Rice Plants Fartilizer-Nitrogen Use Efficiency and Its Physiological Mechanism under Site-Specific Nitrogen Management in Rice Site-specific Nitrogen Management Increases Fertilizer-nitrogen Use Efficiency in Rice Effects of Wheat Residue Incorporation and Nitrogen Management Techniques on Formation of the Grain Yield of Rice Characteristics of Nutrient Uptake and Accumulation in Wheat and Rice with Continuous Cropping under Super-High-Yielding Cultivation Effects of Wheat-Residue Application and Site-Specific Nitrogen Management on Growth and Development in Direct-Seeding Rice Effects of Dry Matter Accumulation and Photosynthate Transporation of Stem and Sheath and Grain Production Under Different Water and Nitrogen Management in Rice