【摘要】 榆叶梅是我国北方园林绿化中应用较广的春季观花树种.受极端天气条件的影响,榆叶梅在其花期会出现花瓣卷边的现象,严重影响观赏效果.本文在多年物候观测的基础上,以2009年榆叶梅花期花瓣卷边现象为例,结合实地调查和同期气象资料,对花瓣卷边的成因进行分析.结果表明:造成榆叶梅花期花瓣卷边的主要原因是其花盛期气温的异常增高,以及空气湿度的持续偏低.此外,榆叶梅花瓣卷边的严重程度还受局地小气候环境的影响.更多还原

【Abstract】 As a spring flowering species,Prunus triloba is wide planting as landscape in north China. The petals curling phenomenon during the flowering season of Prunus triloba would seriously affect the viewing. This article bases on the phenology observation since 1990 s,and use the petals curling phenomenon which appeared in 2009 as an example,combined the investigation on Prunus triloba during the full blooming season with meteorological data to analysis the relationship between the petals curling and drought weather. The results show that the causes of petals curling phenomenon are the abnormal temperatare increase and the constantly low humidity. The microclimate environment in some areas also has an impact on serious extent of the petals curling.更多还原