关键词: 叶用莴苣, 叶用莴苣, 组织培养, 再生体系

Abstract: In order to understand soil fertility and the present situation of environment quality, the nutrients contents in typical tea gardens were investigated in Hangzhou, Zhejiang. The results showed that soil pH was suitable for tea tree growth and the content of organic matter was also rich. In general, the contents of all available nutrients were rich, while there were great variations. Fertilizer retention capacity was above average. Moreover, complex pollution index of soil was less than 0.7, indicating the overall nvironment quality was good and suitable for the development of organic tea. Enrichment coefficient analysis showed that the content of heavy metal in tea was Zn＞Cu＞Pb＞Cr＞Cd＞Hg＞As. The concentration coefficient of copper, zinc and cadmium in tea was more than ten times compared with other heavy metals. However, tea pollution index was still below 1, indicating the overall quality was good.