Factors influencing the Se content in tea leaves and rhizosphere soils of the Liubao tea in Wuzhou City,Guangxi
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 fa-cilitate 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.
万方数据
维普
