毛白杜鹃的光生态及其园林造景的研究

Linght Ecology of Rhododendron and Its Application to Landscape Design

通过对以毛白杜鹃为下木的不同园林群落光因子与毛白杜鹃开花关系的研究,认为毛白杜鹃是一较强阳性灌木,它对强光照有很强的适应性,但不能忍受重荫。当园林风景群落内相对光强在2.30—5.85％时,它不能开花;当相对光强在9.52％(紫萼)与41.20％(毛白)时毛白杜鹃才能形成美丽的园林景观,在园林配植毛白杜鹃时,既应考虑杜鹃造景的艺术手法,又能兼顾杜鹃喜光这一生态要求,方能取得理想的景观效果。

Studies on the flowering area index and light-photosynthesis response curves of R.mucronatum to light intensity in man-made vegetations dominated with R.mucronatum showed that R.mucronatum should be considered as sunny plant, other than shady plant.The curves of flowering area index related to various light intensity indicated that the thresholds of light intensity for flower initiation are within the range of 2.30-5.85%, thus for optimum flowering area index (>1) R.mucronatum var.plenum and R.mucronatum should not be planted at the site with relative light intensity below 9.52% and 41.2% respectively.So R.mucronatum should be grown at location with plenty of light such as the edge of woods, the window of woods or the sunny environment in landacape design.