Regulative effect of nitrogen fertilization on grain yield,quality and photosynthesis of flag leaves in different wheat varieties Effect o Potassium on Sucrose Content of Flag Leaves and Starch Accumulation of Kernels in Wheat Studies on the Relationship between the Successive Release of Winter Varieties in Xinjiang Province and the Evolution of the Mesophyll Cells in the Flag Leaves of Wheat High Efficiency Photosynthetic Characteristics in Flag Leaves of Super High-yielding Rice Photosynthetic Characteristics in Flag Leaves of Super High-yielding Hybrid Rice Peiai64S/E32 and Its Parents Grown in the Field AN ANATOMICAL STUDY ON THE FLAG LEAVES OF COLD TYPICAL WHEAT Effects of Chilling Temperature on Photosynthesis and Photosynthate Transport in Flag Leaves of Hybrid Rice at Milky Stage CHARACTERISTICS OF FLAG LEAVE OF HIGH YIELD RICE HYBRIDS AFTER THE LEAVE FULLY SPREAD Effects of Herbicides on Photosynthesis Characteristics,Yield and Quality of Winter Wheat Studies on the Characteristics of Chlorophyll Fluorescence of Winter Wheat Flag Leaves at Different Developing Stages Anatomical Structure on Flag Leaves and Adventitious Root of Transgenic Rice with BADH cDNA in Rainfed Farming