Effects of Postponing Nitrogen Application and Spraying Foliar 6-BA after Anthesis on Grain Yield and Quality of Winter Wheat EFFECT OF HIGH TEMPERATURE DURING DIFFERENT GROWTH STAGE AFTER ANTHESIS ON STARCH SYNTHESIS AND RELATED ENZYME GENE EXPRESSION IN WHEAT GRAINS Effects of Simulated Acid Rain at Different Grain Development Stage on Photosynthetic and Antioxidant System Effects of Transient High Temperature after Anthesis on Grain Protein Content and Physiological Mechanism in Wheat (Triticum aestivum L.) Effects of Postponing Nitrogen Application on Grain Filling Characteristics and Yield Components of Winter Wheat Suffered Waterlogging after Anthesis Effect of different acidities of acid rain on nitrogen and sulfur metabolism and grain protein levels in wheat after anthesis Characteristics of Senescence and Antioxidant Enzyme Activities in Leaves at Different Plant Parts of Summer Maize with the Super-high Yielding Potential after Anthesis