The salinity-adaptation physiology in different ecotypes of Phragmites communis in the Yellow River Delta Ⅱ.the characteristics of photosynthetic gas exchange in different ecotypes of Phragmites communis Photosynthetic and Physiological Characteristics of Camellia petelotii Seedlings under Drought Stress Response of Photosynthetic Gas Exchange Parameters of the Leaves of Flue-cured Tobacco on the Attenuated UV-B Radiation Intensity Effects of Low Light Intensity on Gas Exchange and Chlorophyll Fluorescence Characteristics of Capsicum Seedlings Photosynthetic Gas-exchange and Leaflet Movement of Robinia pseudoacacia in Relation to Changing Light Environments Responses of leaf photosynthetic gas exchange parameters to vapor pressure deficit in wheat under different nitrogen forms 紫外线-B辐射与3种植物幼苗的光合作用——光合作用对紫外线-B敏感性的比较 Effect of Strontium on Photosynthesis of Leaves in Rape Seedlings Effects of Low Light Intensity on Gas Exchange and Chlorophyll Fluorescence Characteristics of Capsicum Seedlings