<正>无性系植物可通过自身的表型可塑性调节适应不同的环境资源供应水平。在环境条件相同的情况下，以典型的无性系植物中国沙棘为对象，采用跟踪挖掘和样方相结合的方法，调查分析中国沙棘无性系生长差异。结果表明：中国沙棘无性系之间的生长特征和形态特征均存在明显差异，具体表现在子株数量和子株大小、子株数量散布格局和子株大小散布格局，以及无性系子株群结构等方面。此外，子株地径与母株地径之间存在显著的正相关关系。

The urban road virescence is a fundamental part of the urban green system. As the ecological corridor, the street green system has played an increasingly important role in the entire city ecological system in addition to the landscape and visual effects. Based on the research of the plant diversity of the main street in Wuhan, the paper analyses the problem as well as the valuable experience in the design of street landscape planting and tries to give some practicable methods to deal with the strategy in the road virescence of the garden city construction.