The Ecophysiological Response of Calligonum caput-medusae to Different Water Condition in Extremely Arid Region Effects of alternative furrow irrigation and nitrogen application rate on photosynthesis, growth, and yield of cucumber in solar greenhouse. Root Morphology and Dry Matter Allocation of Masson Pine:Response of Different Provenances to Low-Phosphorus Stress Effects of Cadmium Stress on Leaf Photosynthesis and Dry Matter Allocation of Populus×euramericana (Dode)Guineir cv.‘Neva’