Comprehensive Grey Evaluation of Ornamental Value of Fruit Trees
Ornamental values of 9 fruit tree were systemically evaluated to provide references for the application of fruit tree species in greening.Six evaluation indices were established,such as flowering days,flower compactness and brightness,fruit bearing days,fruit shape and color,tree height,and tree shape.Grey correlation degree analysis was adopted to the evaluation.The results demonstrated that the ornamental value of Punica granatum (γ7=0.884 1) was close to the standard of "perfect",followed by Crataegus pinnatifida (γ9 =0.833 5),Vitis vinifera (γ4 =0.549 5),and Actinidia chinensis (γ5 =0.527 8).
fruit treesevaluation criteriagarden plantsgrey relation analysiscomprehensive evaluation