Abstract:

Rheum is called “Xining Dahuang”, which are traditional medicinal materials of local Qinghai.Natural resources are nearly exhausted.Recently, scale of planting is becoming larger and larger.We picked the cultivated Rheum sp.of two-year period in Daheigou of Qinghai Province, and analyzed the content of mineral elements.The results showed that mineral elements accumulation in the root, stem and leaf of cultivated Rheum is different from each other and the needing of mineral elements during different seasons of growing has a dynamic characteristic.We want to provide the scientific evidence for sustainable development and reasonable utilization of Rheum sp.resources

Key words: Rheum, mineral elements, Daheigou