摘要
对22种宿根花卉利用叶片和冻害指数进行了耐寒性试验,利用叶色、冠幅、株高和花茎数等指标和灰色关联度分析法进行了观赏性评价,结果表明,药鼠尾草最耐寒,茛力花最不耐寒;智利豚鼻花和理想种的关联度最大、关联度为0.86,垂枝苔草和理想种的关联度最小、关联度为0.55;宿根花卉种类关联度大的观赏性较好,可根据宿根花卉耐寒性和观赏性特点进行园林应用。
22 species of perennial flowers were experimented regarding their cold resistance reflected in freezing index of leaves.Their ornamental values were determined by grey correlation degree and indicators of leaf color,canopy width,height of plant and number of stems.The results showed Salvia officinalis is most cold-resistant,while Acanthus mollis the least.Correlation is the largest between Sisyrinchium striatum and ideal species,with correlation at 0.86.Correlation is the minimum between Carex pendula and ideal species,with correlation at 0.55.The higher the correlation of perennial flowers have,the better the ornamental properties they have.
出处
《陕西林业科技》
2015年第5期1-4,9,共5页
Shaanxi Forest Science and Technology
基金
陕西省科技厅农业攻关2013K01-05
西安市科技局西安市现代农业创新计划NC1305(1)
关键词
宿根花卉
耐寒性
观赏性
评价
Persistent-foot flower
Cold resistance
Characteristical of ornamental
evaluation
