武威地区9个观赏性草坪草种的关联度分析

Relation degree analysis on 9 ornamental turf varieties cultivated in Wuwei prefecture

采用灰色系统关联度分析方法,分析并计算了武威地区9个观赏性草坪草种之间的关联度以及它们的7个评价指标值间的关联度大小,结果表明:草坪草评价指标间的关联度大小顺序是绿期>叶色>抗旱性>抗热性>出苗期>成坪期>抗寒性;草坪草种间的关联度大小顺序是黑麦草>高羊茅>早熟禾,关联度的大小可以反映出草坪草种间及其评价指标间的主次顺序,为武威地区草坪草种的选择提供了一定的参考依据。

Applying the relation degree analysis of grey system, 9 turf species’ relation degree and their evaluation indexes' relation degree was analyzed, the order of relation degree is green period > leaf color >dry resistance >heat resistance >time of emergence >time of turf establishment >cold resistance, and that for turf species relation degree is Lolium perenne >Festuca arundinacea>Poa pratensis, varying relation degree reflected the orders of evaluation indexes and varieties, this provides scientific basis for choosing turf varieties.