Study on the Photosynthetic Dynamic Variation of Phyllostachys edulis Study on the Transpiration Dynamic Variation of Phyllostachys edulis’Pachyloen’ Research progress on development and physio-ecology of fern gametophytes A study the physio-eeology of dryland crop population Study on the Tran spira tion Dynam ic Var ia tion of Phyllostachys edu lis