七种园林植物光合生理特性研究

Photosynthetic characteristics of seven landscape plants

以广州市南沙区的7种园林植物花叶鸭脚木、大红花、水鬼蕉、朱蕉、鹅掌藤、绿朱蕉、射干为研究对象,利用Li—6400便携式光合测定系统测定其光合生理特性,以期选出光合能力强的园林植物;同时,以植物的光合指标作为依据进行聚类分析。结果表明:植物的净光合速率为水鬼蕉>鹅掌藤>大红花>射干>绿朱蕉>花叶鸭脚木>朱蕉;7种园林植物可分为3类,第1类有花叶鸭脚木和鹅掌藤,第2类有大红花、朱蕉、绿朱蕉和朱蕉,第3类为水鬼蕉。水鬼蕉和鹅掌藤的净光合速率和蒸腾速率高,光合能力、改善生态环境的功能强。

In order to select landscape plants with high photosynthetic capacity, the photosynthetic characteristics of senven landscape plants Schefflera odorata ＇ Variegata＇ , Hibiscus rosa - sineusis , Hymenocallis littoralis , Cordyline fruticosa, Scheffiera arboricola, Cordylinefruticosa ＇ Green Leaves＇and Belamcanda chinensis were analyzed in Nansha of Guangzhou, Guangdong Province. Results showed that photosynthetic rate of plants decreased in the order of H. littoralis. 〉 S. arboricola 〉 H. rosa-sinensis 〉 B. chinensis 〉 C. fruticosa ＇Green Leaves ＇〉 S. odorata ＇Variegata＇ 〉 C. fruticosa ; the photosynthetic index of seven plants were grouped using cluster analysis： the first kind included S. odorata ＇ Variegata＇ and S. arboricola, the second kind included H. rosa - sinensis, B. chinensis, C. fruticosa and C. fruticosa ＇Green Leaves＇and belonged to the third kind, H. littoralis and S. arboricola have a strong improving environment function with high net photosynthetic rate and transpiration rate.