Effects of Differential Shading on Summer Tea Quality and Tea Garden Microenvironment

文献类型： 外文期刊

第一作者： Ge, Shibei

作者： Ge, Shibei;Wang, Yameng;Shen, Keyin;Wang, Qianying;Han, Wenyan;Li, Xin;Shi, Yuanzhi;Ahammed, Golam Jalal;Jin, Zhifeng

作者机构：

关键词： tea plants (Camellia sinensis L.); shading; tea quality; tea polyphenol; amino acids; microenvironment; far-red light

期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）

ISSN： 2223-7747

年卷期： 2024 年 13 卷 2 期

页码：

收录情况： SCI

摘要： Shading is an effective agronomic technique to protect tea plants from intense sunlight. However, there are currently very few studies on more effective shading methods to improve the quality of summer tea. In this study, 'Longjing43' plants were grown under four different shading treatments for 14 days, with no shading as the control. Among the four shading treatments, double-layer-net shadings had the most positive impact on the tea quality, resulting in higher levels of amino acids but lower levels of tea polyphenols. Additionally, double-layer-net shadings provided more suitable microenvironments for tea plants. The tea leaves in T4 (double nets 50 cm above the plant canopy) contained 16.13 mg center dot g(-1) of umami and sweet amino acids, which was significantly higher than in other treatments. T4 had the lowest air temperature and the most suitable and stable soil water content. Interestingly, the ratio of red light to far-red light in T4 was only 1.65, much lower than other treatments, which warrants further study. In conclusion, the microenvironment induced by shading can greatly affect the tea quality, and double-layer-net shading is better for improving the quality of summer tea.

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