论文部分内容阅读
对阳江5种园林植物的光合特性和叶片元素状况进行了研究。结果表明,园林植物的净光合速率为马鞍藤>花叶假连翘>银边山菅兰>鹅掌藤>朱蕉,花叶假连翘和马鞍藤的光合能力最强。海陵岛植物叶片的C、N、P、K和Na含量范围分别为457.8~503.6、11.6~33.3、1.2~2.7、14.4~21.7和0.7~8.1 g·kg-1。花叶假连翘的叶片N、P和K含量最高,马鞍藤次之。5种园林植物的C:N和C:P范围分别为13.8~43.4和171.8~380.9,N:P范围为7.6~12.5,N:K和K:P范围分别为0.8~1.5和8.1~11.8。聚类分析表明,5种园林植物中,花叶假连翘和马鞍藤的叶片养分含量高,促进了光合作用。
The photosynthetic characteristics and leaf element status of five species of garden plants in Yangjiang were studied. The results showed that the net photosynthetic rate of garden plants was the highest in the order of saddle rattan, forsythia pseudo-forsythia, Betula platyphylla bland. The contents of C, N, P, K and Na in leaves of Hailing Island were 457.8 ~ 503.6, 11.6 ~ 33.3, 1.2 ~ 2.7, 14.4 ~ 21.7 and 0.7 ~ 8.1 g · kg-1, respectively. Mosaic forsythia leaves N, P and K content highest, followed by the saddle. The ranges of C: N and C: P of 5 species of garden plants ranged from 13.8 to 43.4 and 171.8 to 380.9, N: P ranged from 7.6 to 12.5, N: K and K: P ranged from 0.8 to 1.5 and from 8.1 to 11.8, respectively. Cluster analysis showed that among the five species of garden plants, the Ficus ponderosa and the saddle vine had high nutrient content and promoted photosynthesis.