Different Parts and Different Harvest Period of Rhodiola rosea

The contention of salidroside in the wild Rhodiola rosea of different harvesting period and palnted by manual work by HPLC.Result shows: ① The most contention of salidroside is the rhizome of R.rosea harvesting last of August with regard to wild Rhodiola rosea,that the contention was 1.7%.And the salidroside contention of rhizome was more than that of root.The salidroside contention of stipite and leaves was less.② The salidroside contention of R.rosea planted on the different altitude was reduced.The most contention of R.rosea was planted on the altitude 894 m.That the salidroside contention of root and rhizome was respective 1.397% and 1.48%.