Survey And Appraisal Of Perennial Flower Resources In Changzhi City

Perennial flower is an important plant in urban landscaping.Due to its abundant types and adaptability,it can be enjoyed for many years after being planted for a long time,and it has many advantages such as easy propagation and simple maintenance.The application of perennial flowers in gardens has received increasing attention.This paper systematically studies the species,varieties,application status,application methods and ornamental evaluation of perennial flowers in Changzhi City.The main research results are as follows:Investigation and analysis of the perennial flower application and existing problems of perennial flowers in the garden greening of 32 green parks in Changzhi City.The results of the survey were collected and analyzed,and the types of perennial flowers(including the first-and second-year herbaceous flowers)in the garden greening of Changzhi City were calculated.There were 31 families,71 genera,and 77 species.Among them,Asteraceae is the most abundant,accounting for 19 species,accounting for 24.7%;Liliaceae 5 species,Solanaceae,Lamiaceae are 4 species;Leguminosae,Convolvulaceae are 3 species;The remaining families are one to two.According to the frequency of application of various types of perennial flowers,the statistical perennial perennial flowers were divided into 5 levels.There are 23 kinds of application frequencies below 5%,27 types of application frequencies between 5%and 10%,21 types of application frequencies between 10%and 15%,and between 15%and 20%.There are two kinds,and there are 4 kinds of more than 20%.The wild perennial flower resources in 6 natural scenic spots in Changzhi City were investigated.The investigation results showed that there are a large number of wild ornamental plants with high ornamental value and strong resistance in Changzhi Mountain.Through combing the survey results,38 species of 32 genera and 20 families of wild ornamental plant resources with ornamental value were screened out,of which the blue-violet family flower accounted for 37%,the white department accounted for 26%,the yellow system accounted for 8%,and the red pink department accounts for 29%The results of the two surveys were summarized and an evaluation model was established using the Analytic Hierarchy Process(AHP)method.A total of 16 indicators including the adaptability,ornamental and landscape application potentials of 133 ornamental plants were comprehensively evaluated,and the garden application value was selected.There are 32 kinds of perennial flowers and 45 kinds of perennial flowers with high value for garden use.