南京林业大学学报(自然科学版) ›› 2025, Vol. 49 ›› Issue (2): 115-122.doi: 10.12302/j.issn.1000-2006.202309021

• 研究论文 • 上一篇    下一篇

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

吴翼1(), 刘勇1,*(), 周晓杰2, 王开勇2, 王文霄2   

  1. 1.北京林业大学林学院,省部共建森林培育与保护教育重点实验室,北京 100083
    2.北京市京彩燕园苗圃,北京 101109
  • 收稿日期:2023-09-12 接受日期:2023-12-15 出版日期:2025-03-30 发布日期:2025-03-28
  • 通讯作者: *刘勇(lyong@bjfu.edu.cn),教授。
  • 作者简介:

    吴翼(adainthewoods@163.com)。

  • 基金资助:
    北京园林绿化科技创新工程项目(EG-2016-01)

Changes in leaf color and their relationship with leaf mineral elements under soil alkaline conditioners of Acer×freemanii

WU Yi1(), LIU Yong1,*(), ZHOU Xiaojie2, WANG Kaiyong2, WANG Wenxiao2   

  1. 1. College of Forestry, Beijing Forestry University, Key Laboratory for Silviculture and Canservation of Ministry of Education, Beijing 100083, China
    2. Beijing Jingcai Yanyuan Nursery, Beijing 101109, China
  • Received:2023-09-12 Accepted:2023-12-15 Online:2025-03-30 Published:2025-03-28

摘要:

【目的】研究土壤改良剂对银红槭(Acer×freemanii)叶色变化的影响以及叶色变化与叶片矿质元素含量之间的关系,为解决银红槭叶色不红现象提供理论依据。【方法】以6年生银红槭为材料,设置了5个梯度的硫磺粉+脱硫石膏土壤碱性改良剂处理,并在秋季叶色转变的4个时间段测得叶片色素和10种矿质元素含量。【结果】土壤碱性改良剂处理能显著影响叶片叶绿素、类胡萝卜素和花色素苷含量,影响叶色参数L*a*b*值,而T5(1.94 kg/m3硫磺粉+2.33 kg/m3脱硫石膏)处理下呈色时间更长,叶色最为红艳;土壤碱性改良剂处理显著影响了叶片矿质元素含量以及变化趋势;叶片矿质元素与色素间相关性分析表明,N含量与叶绿素和类胡萝卜素含量呈极显著正相关(P<0.01),与花色素苷含量呈极显著负相关(P<0.01),K含量与类胡萝卜素含量呈显著负相关(P<0.05),Ca、Mg含量与叶绿素含量呈极显著负相关(P<0.01),与花色素苷含量呈显著正相关(P<0.05),Mn含量与类胡萝卜素含量呈极显著正相关(P<0.01)。【结论】在一定范围内,土壤pH降低能促进银红槭叶片呈色;施加土壤改良剂对银红槭叶片色素和矿质元素含量的影响是显著的,而叶片矿质元素,尤其是N、K、Ca、Mg、Mn与叶片显色具有较强相关性。

关键词: 银红槭, 叶片矿质元素, 土壤碱性改良剂, 叶色变化

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.

Key words: Acer×freemanii, leaf mineral element, soil alkaline amendment, leaf color changes

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