茶绒杜鹃在三明城市绿地的光照适应性评价

Evaluation of Light Adaptability of Rhododendron apricum in Urban Green Space of Sanming City

通过茶绒杜鹃在三明市城市绿地不同光照条件下引种后成活率、生长量等指标观测,进行光照适应性评价。结果表明:茶绒杜鹃引种存活率较低,引种驯化难度较大;年生长量低于种源地苗圃种植,存在生长速度减缓的现象;其夏季高温有灼伤、焦枯现象,耐热能力一般;枝条萌发数较少,为2~5枝;半荫环境下各项指标均优于全阳、全荫环境。茶绒杜鹃引种需考虑较适宜的生长环境,种植前期应提高技术管理力度。

The survival rate,growth,and other feature of Rhododendron apricum under different lighting conditions in urban green space in Sanming City were observed after introduction and evaluation of light adaptability,the results show:introduction survival rate was low,introduction and domestication was difficult;the annual growth rate was lower than the nursery planting in the provenance,and the growth rate was slowed down;burns and scorches in high summer temperatures,heat resistance was general;the number of branches germinated was less,2~5 branches;all indicators under half-shade environment were better than those of full-yang and full-shade environment.The application of Rhododendron apricum in gardening needs to consider a more suitable growth environment,and improve technical management in the early stage of planting.