Effects of nitrogen application rates on photosynthetic and physiological characteristics and yield and quality of hybrid cotton Canopy Characteristics and Its Correlation with Photosynthesis of Super High-Yielding Hybrid Cotton Biaoza A1 and Shiza 2 COMPARATIVE STUDIES ON THE INTENSITY OF PHOTOSYNTHESIS BETWEEN Bt TRANSGENIC HYBRID COTTON AND ITS PARENTS Effects of Different Ratios of Base and Topdressing Nitrogen Fertilizer on the Leaf Senescence and Yield of Insect-resistant Hybrid Cotton Photosynthetic Activity and Its Correlation with Matter Production in Non-foliar Green Organs of Cotton A Study on the Nutrient Absorption and Characteristic of Dry-matter Production in Hybrid Cotton (G.hirsutum L.) Gene Differential Expression at Seedling Stage in Four Cotton Combination Hybridized by CRI-12 and Its Pedigree-Deerived Lines Photosynthesis Characteristic, Yield and Fiber Quality of Insect-resistant Hybrid Cotton with Different Potassium Application Types Effects of nitrogen fertilization on uptake and utilization of NPK and yield and quality of hybrid cotton High-Yielding Cultural Approach for the Transgenic Hybrids of Bollworm Resistant Cotton by Transplanting Patterns