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物探与化探  2024, Vol. 48 Issue (2): 545-554    DOI: 10.11720/wtyht.2024.1034
  生态地质调查 本期目录 | 过刊浏览 | 高级检索 |
广西梧州六堡茶茶叶及根系土中硒含量影响因素
彭学锐(), 陈翔, 周思裕
广西壮族自治区二七○地质队,广西 柳州 545005
Factors influencing the Se content in tea leaves and rhizosphere soils of the Liubao tea in Wuzhou City, Guangxi
PENG Xue-Rui(), CHEN Xiang, ZHOU Si-Yu
No. 270 Geological Team of Guangxi Zhuang Autonomous Region, Liuzhou 545005, China
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摘要 

为研究广西梧州六堡茶茶叶—根系土体系中Se含量特征及影响因素,以六堡茶核心产区六堡镇、狮寨镇主要茶园为研究对象,对六堡茶茶叶、根系土、茶叶浸出液样品中的Se含量进行了统计分析。结果表明:研究区茶园土壤中Se含量在(0.40~1.98)×10-6,平均值为1.08×10-6;六堡茶茶叶中Se含量在(0.03~0.25)×10-6,平均值为0.07×10-6,富Se率为68%;茶叶浸出液中Se的浸出率在0~23.95%;研究区六堡茶茶园根系土中Se含量主要受成土母质及土壤硅铁铝率的控制;土壤中的P、N元素可促进茶叶对土壤中Se的吸收,而酸化土壤中的铁铝氧化物则会使土壤中的Se无法被六堡茶充分利用,建议通过适当的生物化学及农艺措施改良酸化土壤,以提高六堡茶的富硒能力。
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彭学锐
陈翔
周思裕
关键词 ： 六堡茶,  根系土,  Se含量,  影响因素,  富Se农业,  广西梧州    
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
收稿日期: 2023-01-20      修回日期: 2023-06-08      出版日期: 2024-04-20
ZTFLH:  X142  
  X825  
基金资助:广西科技重大专项(桂科AA20302018-7);广西地质矿产勘查开发局科研项目(桂地矿综研〔2021〕19号)
作者简介: 彭学锐(1988-),男,工程师,本科,主要从事环境地球化学、农业地质调查等技术研究工作。Email:825467525@qq.com
引用本文:   
彭学锐, 陈翔, 周思裕. 广西梧州六堡茶茶叶及根系土中硒含量影响因素[J]. 物探与化探, 2024, 48(2): 545-554.
PENG Xue-Rui, CHEN Xiang, ZHOU Si-Yu. Factors influencing the Se content in tea leaves and rhizosphere soils of the Liubao tea in Wuzhou City, Guangxi. Geophysical and Geochemical Exploration, 2024, 48(2): 545-554.
链接本文:  
https://www.wutanyuhuatan.com/CN/10.11720/wtyht.2024.1034      或      https://www.wutanyuhuatan.com/CN/Y2024/V48/I2/545
Fig.1  六堡茶园区采样点位
指标 标准偏差 变异系数 最大值 最小值 平均值 浓集系数(K)
Al2O3 2.74 0.16 23.03 10.96 16.84 1.34
CaO 0.02 0.24 0.15 0.054 0.08 0.03
Corg 0.29 0.21 2.17 0.87 1.39 3.97
Fe2O3 1.51 0.24 9.51 2.93 6.36 1.35
K2O 0.34 0.17 2.80 1.29 2.07 0.83
MgO 0.09 0.14 0.86 0.47 0.65 0.36
SiO2 5.61 0.09 77.57 51.53 63.66 0.98
As 13.25 0.56 72.50 7.07 23.60 2.36
B 13.32 0.32 78.70 9.93 41.49 1.04
Cd 0.07 1.06 0.50 0.013 0.07 0.78
Cr 20.59 0.21 150.00 58.90 95.81 1.47
Cu 4.62 0.18 39.10 19.20 26.30 1.10
Ge 0.20 0.14 1.74 0.70 1.38 1.06
Hg 0.04 0.38 0.27 0.061 0.11 2.75
Mn 95.57 0.65 488.00 56.50 147.19 0.25
Mo 1.44 0.76 7.60 0.50 1.90 2.38
N 243.68 0.19 2092.00 872.00 1283.66 2.01
Ni 4.55 0.20 37.90 11.20 22.87 0.88
P 105.47 0.27 700.00 235.00 389.08 0.75
Pb 6.21 0.21 51.10 20.30 28.92 1.26
S 69.14 0.24 472.00 157.00 288.00 1.92
Se 0.44 0.41 1.98 0.40 1.08 5.40
Ti 635.45 0.12 7213.00 4071.00 5094.82 1.18
Zn 10.92 0.27 68.00 22.00 40.21 0.59
pH值 0.25 0.06 5.12 3.96 4.41
Saf 0.85 0.29 5.58 1.58 2.89 0.41
Table 1  研究区六堡茶根系土中各指标含量特征(n=50)
洞口组一
段($\epsilon$h1)		 洞口组二
段($\epsilon$h2)		 黄洞口组
三段($\epsilon$h3)		 小内冲组
($\epsilon$x)
τ 1.18 0.40 0.23 5.16
Table 2  不同地质背景基岩—土壤Se质量迁移系数统计(n=40)
Fig.2  不同地质背景土壤垂向剖面Se含量特征
指标 r 指标 r 指标 r 指标 r
Cr 0.884** As 0.313* Corg 0.016 N -0.148
Ti 0.793** Cu 0.307* K2O -0.015 Pb -0.158
Mo 0.560** Saf -0.785** B -0.018 Zn 0.161
Ni 0.499** P -0.370** Cd -0.124 pH -0.022
Ge 0.460** S -0.327* Hg -0.150
MgO 0.428** CaO -0.042 Mn -0.106
Table 3  根系土Se含量与土壤理化指标相关系数(n=50)
样品序号 茶叶中Se
含量/10-6		 浸出液中Se
浓度/(mg·L-1)		 浸出率/%
1 0.074 0.0005 13.51
2 0.130 0.001 15.38
3 0.248 0.001 8.06
4 0.084 0.001 23.95
5 0.062 0 0
6 0.082 0 0
Table 4  茶叶中Se的浸出率
指标 r 指标 r 指标 r
Saf 0.734** Se -0.686** Ge -0.317*
P 0.546** Cr -0.596** pH 0.035
N 0.501** As -0.478** Corg 0.228
S 0.349* Ti -0.461**
Hg 0.292* MgO -0.341*
Table 5  六堡茶叶片Se生物富集系数与土壤中各元素指标相关系数(n=50)
n Saf Se土平均值 Se茶平均值 相关系数
A组 30 1.58~2.92 1.32 0.064 0.121
B组 30 2.51~5.38 0.82 0.062 0.582**
Table 6  A、B组根系土和茶叶Se含量特征
Fig.3  研究区B组根系土与六堡茶茶叶Se含量散点
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