南京林业大学学报（自然科学版）2025，Vol.49Issue(2)：115-122,8.DOI:10.12302/j.issn.1000-2006.202309021
土壤碱性改良剂处理下银红槭叶色变化及其与叶片矿质元素的关系
Changes in leaf color and their relationship with leaf mineral elements under soil alkaline conditioners of Acer×freemanii
摘要
Abstract
[Objective]This study investigated the effects of soil amendments on the color changes in Acer×freemanii leaves and explored the relationship between leaf color changes and leaf mineral element content.The findings aim to provide a theoretical basis for addressing the issue of non-red coloration in Acer×freemanii leaves.[Method]Six-year-old Acer×freemanii trees were used as the experimental material.Five gradient treatments combining sulfur powder and desulfurization gypsum as soil alkaline amendments were applied.Leaf color changes were observed during four autumn time periods,with measurements of leaf pigments and the contents of ten mineral elements.[Result]Soil alkaline amendment treatments significantly influenced the contents of chlorophyll,carotenoids,and anthocyanins in leaves,as well as leaf color parameters(L*,a*and b*values).Among the treatments,T5(1.94 kg/m3 sulfur powder and 2.33 kg/m3 desulfurized gypsum)resulted in the most vibrant leaf coloration and an extended period of color development.The treatments also significantly affected the content and variation trends of mineral elements in leaves.Correlation analysis revealed that nitrogen(N)showed a strong positive correlation with chlorophyll and carotenoids(P＜0.01)and a strong negative correlation with anthocyanins(P＜0.01).Potassium(K)showed a significant negative correlation with carotenoids(P＜0.05).Calcium(Ca)and Magnesium(Mg)showed a strong negative correlation with chlorophyll(P＜0.01)and a significant positive correlation with anthocyanins(P＜0.05).Manganese(Mn)showed a strong positive correlation with carotenoids(P＜0.01).[Conclusion]Lowering soil pH within a certain range enhances the coloration of Acer×freemanii leaves.Soil amendments have a significant impact on pigment and mineral element contents in the leaves.Mineral elements,particularly N,K,Ca,Mg,and Mn,show strong correlations with leaf color changes,emphasizing their importance in managing leaf coloration.关键词
银红槭/叶片矿质元素/土壤碱性改良剂/叶色变化Key words
Acer ×freemanii/leaf mineral element/soil alkaline amendment/leaf color changes分类
农业科技引用本文复制引用
吴翼,刘勇,周晓杰,王开勇,王文霄..土壤碱性改良剂处理下银红槭叶色变化及其与叶片矿质元素的关系[J].南京林业大学学报（自然科学版）,2025,49(2):115-122,8.基金项目
北京园林绿化科技创新工程项目(EG-2016-01). （EG-2016-01）
