EFFECT OF DIFFERENT TRANSPLANTING LEAF AGE ON RICE YIELD, NITROGEN UTILIZATION EFFICIENCY AND FATE OF 15N-FERTILIZER Effects of Irrigation Regimes during Grain Filling on Grain Quality and the Concentration and Distribution of Cadmium in Different Organs of Rice Effect of Plant Density on Grain Yield Dry Matter Accumulation and Partitioning in Summer Maize Cultivar Denghai 661 Effect of Elevated CO2 Concentration and Nitrogen Application on Translocation of Dry Matter and Nitrogen Restored before Anthesis in Winter Wheat A Study on Water Use of Two Fruit Tree-Wheat Intercropping Systems in the Rocky Hilly Region of North China with Stable Carbon Isotope Technique Effects of drought stress, high temperature and elevated CO2 concentration on the growth of winter wheat.