Construction Experiment Of Wildflower Combination And Its Ecological Benefit Research

The experiment was configured with 11 combinations of 20 kinds of flowers,including Salvia splendens,Cosmos bipinnata,Coreopsis basalis,Zinnia elegans,Echium vulgare,Papaver rhoeas,Medicago sativa,Phlox nivalis,Securigera varia,Veronica polita,Medicago sativa,Gypsophila paniculata,inum perenne,Thymus quinquecostatus,Salvia japonica,Securigera varia,Agastache rugosa,Dianthus plumarius,Iris lacteal and Belamcanda chinensis.By summarizing the construction technology of wildflower combination in Handan and constructing a comprehensive evaluation system for wildflower combination,provides a scientific theoretical basis for the application of wildflower combination.By observing growth conditions,ornamental features and ability to improve the surrounding microclimate of the 11 wildflower combinations,we have the following conclusion:1.Under the conditions required for seed germination,the germination rate and germination potential of the same plant are basically the same,but there will be different in different combinations because of the different living space,their final survival rate of most flowers is about 50%~60%.When different plants are combined,it will affect the growth posture and morphological characteristics of the plants.Under the different growth environments,the same flowers have different ornamental traits such as plant height,crown width and flower characteristics.2.During the growth period of each combination,it shows the certain effect of cooling and humidifying and dampening,which can improve the comfort of the human body.The cooling and humidifying capacity and the dust-retaining ability of each combination show the overall characteristics of summer superior to autumn.By observing the combined soil temperature and air temperature and humidity,it can be concluded that: the combination 2 and combination 3 which are high covered and various have higher cooling and humidifying ability,improved micro-environment ability and higher comfort;The combination 4 has poor higher cooling and humidifying ability,and the improvement of the surrounding micro-environment and the ability to improve the comfort of the human body are also poor.The summer soil cooling rate is ranked as group combination 6> combination 3> combination 5> combination 7> combination 1> combination 2> combination 8> combination 4.Autumn is combination 5> combination 3> combination 7> combination 2> combination 8> combination 6> combination 1> combination 4.The order of summer cooling rate is combination 3> combination 7> combination 5> combination 2> combination 8> combination 6> combination 1> combination 4,the humidification rate is combination 2> combination 3> combination 1> combination 5> combination 6> combination 7 > Combination 8> Combination 4.The order of autumn cooling rate is combination 5> combination 3> combination 2> combination 7> combination 6> combination 8> combination 1> combination 4 6> Combination 8> Combination 4.Sorting of human comfort in summer: combination 8 <combination 7 <combination 3 <combination 5 <combination 6 <combination 2 <combination 1 <combination 4 <blank control group.The fall order is: combination 5 <combination 3 <combination 2 <combination 7 <combination 8 <combination 6 <combination 1 <combination 4 <blank control group.3.Cluster analysis and plant characteristics observations show that combination 2 and combination 4 have higher dust holding ability,combination 7 has high ornamental value and good dust holding ability,and combination 1,combination 3 and combination 8 have poor dust holding ability.Total dust retention per unit area Combination 2> Combination 4> Combination 7> Combination 6> Combination 5> Combination 8> Combination 3> Combination 1.The dust-holding capacity of each combination of flowers has a saturation limit,and the amount of dust-holding increases rapidly in 3-9 days after rain.The leaf area index showed combination 5> combination 6> combination 7> combination 3> combination 8> combination 4> combination 1> combination 2.4.Eight groups of wildflower combinations were evaluated by analytic hierarchy process,and the score results are in descending order from high to low 3 levels.Combination 3,Combination 6,Combination 5 is the first level(optimal level),combination 1,combination 7,combination 2,combination 8 is the second level combination,and combination 4 is the third level combination.The first level combinations are recommended,which have early viewing period,long flowering period,strong ornamental,high ecological value and low comprehensive cost.They are suitable for a wide range of promotion and application in Handan area.