高寒区山生柳硬枝扦插灰色系统理论分析研究

本研究利用灰色系统关联度分析方法,对山生柳(Salix oritrepha)硬枝5种不同扦插处理的关联度及其扦插繁殖中的8个观察指标值间的关联度大小进行了计算分析,结果表明:山生柳硬枝扦插繁殖观测指标间的关联度大小依次为:保存率主根长度茎粗株高一级分枝数地上生物量鲜质量侧根数量;硬枝扦插5种不同处理的关联度大小依次为:覆膜简易塑料大棚育苗袋育苗杯露地。主根长度、茎粗和株高3个观测指标是影响山生柳扦插繁殖成活率的主要指标因子,覆膜处理是山生柳在高寒区最适合的快繁技术。

Gray system theory based analysis of hard branch cuttage of Salix oritrepha in alpine area

The relational grades of 5 hard branch cuttage treatments and 8 observing indicators of Salix oritrepha were conducted with relational grade analysis method. The results showed that the relational degrees among observing indicators of S.oritrepha cuttage with hard branch was survival rate>root length>stem diameter>height>number of first class branch>fresh weight of aboveground biomass>number of lateral root. The order of relational degree of 5 treatments was plastic mulch>simple plastic greenhouse>nursery bag>seedling cup>open field. Root length, stem diameter and height were the main indicators for the survival rate and plastic mulch treatment was the proper method for rapid propagation in alpine area.