结果：大植株大叶千层塔中石杉碱甲含量较高，达0。
Result : there is higher content in the big leaves of big plant .
前言：目的：比较不同植株千层塔中石杉碱甲含量，优选原料药材。
Objective : to compare content of huperzine A in different plants serrate clubmoss herb to optimize the raw material .
千层石