Huang Shuping, Yu Yongdong, Cui Jilai, Luo Zhengwei, Luo Lanxin, Song Chuankui, Liao Hong
Root Biology Center, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, China.
Dabie Mountain Laboratory, College of Tea and Food Science, Xinyang Normal University, Xinyang, Henan, China.
Front Plant Sci. 2025 Jun 18;16:1581120. doi: 10.3389/fpls.2025.1581120. eCollection 2025.
Pleasant aroma is a distinctive character of Wuyi Rock tea, but its optimization through agricultural practices remains largely unexplored. Here, we conducted a two-year field trials in the core-region of Wuyi Rock tea production area with organic or chemical fertilizer. The results indicated that organic fertilizer significantly improves soil fertility, as indicated by increased pH and organic matter. GC-MS analysis showed that organic fertilizer obviously affects the aroma metabolites in tea leaves, with the levels of 1-Hexanol (CHO), 2-Ethyl-1-hexanol (CHO), (E,E)-2,4-Heptadienal (CHO), E-Nerolidol (CHO) and 3-octen-2-one (CHO) increasing by 56.55%, 104.44%, 64.39%, 64.10% and 48.10%, respectively, compared to chemical fertilizer, thereby improving its aroma quality. The correlation analysis and PLS-PM model combined with the results from ionomics and metabolomics, further elucidated that soil fertility significantly impacted the mineral nutrients in tea leaves, thereby regulating the content of volatile metabolites. Altogether, the research findings provide practical fertilizer usage guidelines for tea farmers, helping to improve the aroma quality and overall market value of tea.
香气宜人是武夷岩茶的显著特征，但通过农艺措施对其进行优化在很大程度上仍未得到探索。在此，我们在武夷岩茶产区的核心区域进行了为期两年的田间试验，分别施用有机肥和化肥。结果表明，有机肥显著提高了土壤肥力，表现为pH值和有机质增加。气相色谱-质谱联用（GC-MS）分析表明，有机肥明显影响茶叶中的香气代谢产物，与化肥相比，1-己醇（CHO）、2-乙基-1-己醇（CHO）、（E,E）-2,4-庚二烯醛（CHO）、E-橙花叔醇（CHO）和3-辛烯-2-酮（CHO）的含量分别增加了56.55%、104.44%、64.39%、64.10%和48.10%，从而提高了茶叶的香气品质。相关性分析和偏最小二乘路径模型（PLS-PM）结合离子组学和代谢组学的结果，进一步阐明了土壤肥力显著影响茶叶中的矿质营养，从而调节挥发性代谢产物的含量。总之，研究结果为茶农提供了实用的施肥指导，有助于提高茶叶的香气品质和整体市场价值。
