关键词: 铅, 茶树, 吸收特性, 运移

Abstract: Through field experiment in Yangxian tea plantation of Yixin city, the difference of lead content in each part of immature and mature tea plant was studied, and the correlation of lead content between each part of tea plant and soil were also analyzed. The result showed that there was obvious difference of lead content in different part of tea plant, and the distribution arrange of lead content was as follows: lateral branch>old leaf>stalk>side root>main root>young leaf. The content of lead in lateral branch was more three times than that in other part of tea plant, and the lead content of young leaf in immature tea plant was higher than that in mature one. At the same time, the correlation analysis results about content of lead in each part of tea plant and in soil showed that correlation of lead content between in soil and in tea root is more obvious than that in others parts of tea plant. When lead pollution occurred in soil of tea plantation, content of lead in each part of tea plant increased. It was showed that the content of lead in side root and main root increased rapidly, and with the prolonged pollution, lead in each part of tea gradually drew toward lateral branch. So the content of lead in branch lateral would show more and more, ultimately becoming the most in aboveground of tea plant.

Key words: lead, tea plant, characteristics of absorption, transfer