The secondary metabolites in Eucommia ulmoides organs under the same entironmental condirings were determined. Significant differences of different metabolites were showed among different plants and different organs within the same plant. Considering the contents of one kind of metabolites: chlorogenic acid:leaves>staminate flowers> bark>fruit; aucubin: fruit>leaves>bark>staminate flowers; flavonoids: staminate flowers>leaves>bark>fruit; gutta: fruit>bark>leaves>staminate flowers. Considering the cont...