Analysis of Matter Production Characteristics under Different Nitrogen Application Patterns of Japonica Super Rice in North China THE HIGHEST POPULATION PRODUCTIVITY OF N FERTILIZATION AND ITS FORMATION CHARACTERISTICS ON JAPONICA SUPER RICE IN SOUTH CHINA Correlation of Root Physiology and Leaf Photosynthesis Characteristics in Northern Chinese Japonica Super Rice Effects of Light, Nitrogen and Their Interaction on Grain Yield and Nitrogen, Phosphorus and Potassium Absorption in Japonica Super Rice Effects of Light, Nitrogen and Their Interaction on Grain Yield and Matter Production Characteristics of Japonica Super Rice Characteristics of Dry Matter Production and Accumulation and Super-High Yield of Japonica Super Rice in South China