茶叶学报2024，Vol.65Issue(3)：47-56,10.DOI:10.20045/j.cnki.issn.2096-0220.2024.03.004
40个福建茶树品种叶片元素生态化学计量特征
Ecological Stoichiometric Characteristics of Leaf Elements in 40 Fujian Tea Tree Cultivars
摘要
Abstract
[Objective]Assimilation of elements by 40 tea cultivars in Fujian in relation with ecology was analy-zed.[Method]The contents and stoichiometric ratios of C,N,P,and K in leaves of 40 varieties of tea plants in Fujian were determined for principal component and cluster analyses.Data obtained were evaluated based on 10 selected indicators including contents of C,N,P,and K and ratios of C/N,C/K,C/P,N/K,N/P,and P/K.[Result]Aside from P,C/K,N/K,and P/K,all indicators on the contents of organic C and total N,P,and K as well as the stoichiometric ratios were found normally distributed in the tea leaves.Of the 40 tea varieties,10 were N-limited with a N/P<14,and 25 P-limited with N/P>16.At the critical Euclidean distance of 17,the teas were clustered into 3 categories,i.e.,the N-limited Group Ⅲ and the P-limited Group Ⅰ and Group Ⅱ that comprised 75％of the total.The top 3 principal indicators provided for 91.88％of the total variance explained.The top 6 tea varieties ranked in the order of Jinmudan>Daye-wulong>Chaoyang>Jinguanyin>Tieguanyin>Dahongpao,which agreed with the result base on the N and P contents.[Conclusion]N,P,and N/P of tea leaves appeared to be the crucial indicators for the eco-stoichiometric evaluation in cultivating,selecting,and breeding teas.关键词
茶树叶片/大量元素/生态化学计量/主成分分析/聚类分析Key words
Tea leaves/macro-element/eco-stoichiometric characteristics/principal component analysis/cluster analysis分类
农业科技引用本文复制引用
朱留刚,孙君,张文锦..40个福建茶树品种叶片元素生态化学计量特征[J].茶叶学报,2024,65(3):47-56,10.基金项目
福建省属公益类科研院所基本科研专项(2020R1029003). （2020R1029003）
