不同颜色棚膜覆盖对月季光合生长和切花品质的影响OA

To investigate the effects of different spectral environments on the photosynthetic characteristics,growth indicators,and cut flower quality of Rosa chinensis,the R.chinensis cultivar"Carola"was used as the test material.Treatments with red,blue,green,yellow,and colorless transparent(CK)greenhouse plastic film mulching were adopted,combined with analysis of variance(ANOVA),Pearson correlation analysis,and principal component analysis(PCA)to comprehensive-ly evaluate the regulatory effects of different greenhouse plastic films.The results showed that different colored greenhouse plastic films had significant impacts on the photosynthetic characteristics,growth performance,and cut flower quality of R.chinensis.Blue greenhouse plastic film mulching significantly increased the net photosynthetic rate and stomatal conduct-ance of R.chinensis,and promoted the growth of plant height,stem diameter,leaf area,as well as cut flower diameter and flower branch length.In contrast,red greenhouse plastic film also exhibited good effects,especially in terms of stem diam-eter and flower diameter.Green and yellow greenhouse plastic films had weak promoting effects on R.chinensis growth and cut flower quality.Principal component analysis revealed that blue greenhouse plastic film achieved the highest comprehen-sive score,indicating it had the optimal effect in promoting photosynthesis,plant growth,and cut flower quality.There-fore,blue greenhouse plastic film significantly improves the photosynthetic growth and cut flower quality of R.chinensis,making it the best choice for light quality regulation in greenhouse R.chinensis cultivation,while green and yellow green-house plastic films are not suitable for optimizing R.chinensis growth and cut flower quality.