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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)。结果表明 ,净光合速率和蒸腾速率的日变化是在PAR的影响下许多因子共同作用的结果 ,两者都呈单峰型 ;光能利用效率和水分利用效率的变化趋势一致 ,13∶30前最高 ,此后有所下降 ,但仍维持较高水平。水分充足是两耳草在雾凉季保持旺盛生命力的根本原因 ,干热季适当浇灌是保证草坪质量和延长其绿期的必要措施
The net photosynthetic rate (Pn) and related factors of Calycsola grass in Xishuangbanna foggy season were measured by CID - 30 1CO2 gas analyzer, and the water use efficiency (WUE) and light energy utilization efficiency (LUE) were calculated. The results showed that the diurnal changes of net photosynthesis rate and transpiration rate were the result of the interaction of many factors under the influence of PAR, and both showed a single peak type. The trends of light use efficiency and water use efficiency were the same. Before 13:30 Highest since then, but still maintain a high level. Adequate moisture is the root cause of biloba in the foggy and cool season to maintain vitality, proper irrigation during dry and hot season is to ensure lawn quality and extend the green period of the necessary measures