Variation of Water and Nitrogen Contents & Photosynthesis at Different Position Leaves of Rice Under Different Soil Water and Nitrogen Conditions Characteristics of the Leaf Net Photosynthesis of the Evergreen Broad-leaved Forest Dominated by Quercus glauca and Their Significance in Coenology CO2 flux characteristics and their influence on the carbon budget of a larch plantation in Maoershan region of Northeast China Improvement in Photosynthetic Characteristics Among Maize Varieties in China from the 1950s to the 1990s Analysis of photosynthetic simulation by a biochemical model or mathematical model in greenhouse eggplant Effects of excessive nitrogen supply on productivity of winter wheat Effects of Leaf Removal on Canopy Apparent Photosynthesis and Individual Leaf Photosynthetic Characteristics in Summer Maize under High Plant Density