广西梧州六堡茶茶叶及根系土中硒含量影响因素

doi:10.11720/wtyht.2024.1034

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Abstract

This study aims to investigate the characteristics and influencing factors of selenium (Se) content in the tea leaf-rhizosphere soil system of the Liubao tea in Wuzhou, Guangxi. With the main tea gardens in Liubao and Shizhai towns, the core production areas of the Liubao tea, as study areas, this study conducted statistical analysis of the Se content in the tea leaves, rhizosphere soils, and tea leachate samples of the Liubao tea. The results show that: ① The Se content in soils of the study areas ranged from (0.40~1.98)×10^-6, averaging 1.08×10^-6; ② The Se content in Liubao tea leaves was between (0.03~0.25)×10^-6, averaging 0.07×10^-6, with a Se enrichment rate of 68%; ③ The leaching rates of Se in tea leachate ranged from 0~23.95%; ④ The Se content in the rhizosphere soils of tea gardens principally depended on soil parent materials and silica-sesquioxide ratios; ⑤ The P and N elements in soils can facilitate the absorption of soil Se by tea leaves, while the iron and aluminum oxides in acidified soils hinder the full utilization of soil Se by the Liubao tea. Hence, appropriate biochemical and agronomic measures are recommended for acidified soil amelioration to enhance the Se enrichment ability of the Liubao tea.

Key words： Liubao tea rhizosphere soil Se content influencing factor selenium-enriched agriculture Wuzhou, Guangxi

Received: 20 January 2023 Published: 16 April 2024

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	Articles by authors
	Xue-Rui PENG
	Xiang CHEN
	Si-Yu ZHOU

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Xue-Rui PENG,Xiang CHEN,Si-Yu ZHOU. Factors influencing the Se content in tea leaves and rhizosphere soils of the Liubao tea in Wuzhou City, Guangxi[J]. Geophysical and Geochemical Exploration, 2024, 48(2): 545-554.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2024.1034 OR https://www.wutanyuhuatan.com/EN/Y2024/V48/I2/545

Sampling points in study area

Characteristics of parameter contents in rhizosphere soils of Liubao tea of the study area(n=50)

Statistics of mass transfer coefficient of selenium in different geological background(n=40)

Contents of selenium along vertical soil profiles of different geological backgrounds

Correlation coefficients of selenium contents and other physicochemical parameters of rhizosphere soils (n=50)

Dissovled rate of selenium in tea

Correlation coefficients between the bioconcentration factors of selenium in tea leaves and contents of other elements in soils(n=50)

Characteristics of selenium contents in rhizosphere soils and tea leaves of group A and group B

Scattered plots of selenium contents in rhizosphere soils and tea leaves of group B

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