黑龙江省哈大高速公路中央分隔带绿化树种调查与选择

对哈尔滨至大庆间高速公路现有景观绿化植物种类及中央分隔带立地条件进行实地调查与分析。该路段景观绿化植物6种,其中常绿乔木2种,花灌木4种,植物种类单调,彩化树种缺乏。中央分隔带土层薄,呈中性或偏酸性,土壤速效氮、速效钾和速效磷含量低,土质较差。根据植物的生态学特性及路段的现有条件,结合高速公路绿化要求的特殊性,探讨哈大高速公路中央分隔带绿化树种的选择,为黑龙江省高速公路景观绿化植物的选择、设计、施工和更新改造提供科学依据。

Investigation and Choice of Median Separator Greening Plants along Harbin-Daqing Freeway in Heilongjiang Province

Landscape greening plant composition and site condition of median separator along the Harbin-Daqing Freeway was investigated and analyzed.All the 6 species belong to 5 families,5 geneses(2 kinds of evergreen trees,4 kinds of shrubs).There is a lack of floristic,aspection change humdrum.Layer of soil on the median separator was thin,show neutrality or by acidity.The survey revealed contents of available nitrogen、available kalium and available phosphorus all in low spots.Combining with the specificity of freeway greening,according to plant biological characteristics and site condition,the species selection of median separator is discussed.And the findings provide the scientific foundation for the freeway greening in Heilongjiang province.