The net photosynhtesis (Pn) and other related factors of ?Paspalum conjugatum? with CID 301CO 2 gas analyzer in mist cool season of Xishuangbanna were measured and light use efficiency (LUE) by Pn/PAR and water use efficiency (WUE) by Pn/Tr, were gotten.

• 用CID - 30 1CO2 气体分析仪测定两耳草在西双版纳雾凉季的净光合速率Pn及相关因子 ,并计算水分利用效率 (WUE)和光能利用效率 (LUE)。