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。
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:①The Se content in soils of the study areas ranged from(0.40~1.98)×10^(-6),averaging 1.08×10^(-6);②The 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%;③The leaching rates of Se in tea leachate ranged from 0~23.95%;④The Se content in the rhizosphere soils of tea gardens principally depended on soil parent materials and silica-sesquioxide ratios;⑤The 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.
作者
彭学锐
陈翔
周思裕
PENG Xue-Rui;CHEN Xiang;ZHOU Si-Yu(No.270 Geological Team of Guangxi Zhuang Autonomous Region,Liuzhou545005,China)
出处
《物探与化探》
CAS
2024年第2期545-554,共10页
Geophysical and Geochemical Exploration
基金
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)。
关键词
六堡茶
根系土
Se含量
影响因素
富Se农业
广西梧州
Liubao tea
rhizosphere soil
Se content
influencing factor
selenium-enriched agriculture
Wuzhou,Guangxi
