We separately collected cultivated Swertia franchetiana H.Smith.of the seeds matured ago and later,in order to compare the change of the trace elements that the cultivated Swertia franchetiana H.

• 为了对比成熟种子采收前(花果期)和采收后微量元素的变化,分别采集种子采收前和采收后的种植青海抱茎獐牙菜全植株,采用原子吸收光谱仪分析测试铜、锌、铁、锰、钴、镍等微量元素含量。