三种室内观叶植物光合特性与抗SO2能力研究

对常春藤、鸭跖草和棕榈３种适于室内栽培的观叶植物光合特性和抗ＳＯ２能力进行研究，结果显示：棕榈光饱和点、光补偿点较高，属半阴性至半阳性植物，在室内较明亮处有光合积累；常春藤、鸭跖草光饱和点和光补偿点均低，属阴性植物，宜于室内环境栽培。对ＳＯ２抗性以棕榈最强，鸭跖草最弱。常春藤具抗ＳＯ２和阴生性特点，适于光能资源不足地区和ＳＯ２污染地区室内栽培利用。

Photosynthetic Characteristics and SO 2 Adaptability of Three Ornamental Foliage Plant Species

Light saturation and compensation points of leaf photosynthesis and influence of SO 2 on the leaf photosynthelic rates were studied in three species of ornamental foliage plants, Trachycarpus fortunei (Hook.f.)H.Wendl, Hedera nepalensis K.Koch var. sinensis (Tobl.)Rehd and Commelina communis L..The results showed that Trachycarpus fortunei had a high light saturation point and a high compensation point,which led it to belong to between semi shade and semi sun plants.It may be able to accumulate photosynthates in indoor growing only when being grown in the place with a relatively high light intensity.In contrast, Hedera nepalensis var. sinsis and Commelina communis had a low light saturation point and a low light compensation point,behaving as shade plants.Of the three species, Trachycarpus fortunei was the most tolerant to SO 2,and Commelina communis was the most sensitive. Hedera nepalensis var. sinensis ,exhibiting SO 2 tolerance and behaviour of shade plant,is suitable for indoor growing in the place with low light intensity and SO 2 po llution.