In order to check how Fritillaria unibracteata
Hsiao et K. C. Hsia adjusts to resources variation, a controlled field experiment was set, and F. unibracteata
’s responses of growth and C-N balance to shading and nitrogen addition were examined. F. unibracteata
was highly responsive to shading and nitrogen addition. Nitrogen content in leaf and root showed significant increase after shading and nitrogen addition, which induced (P<0.05) under shading treatment, while there was no obvious change of R, under-addition treatment. Finally, there were significant correlations (P<0.01) between nitrogen content, C:N and total plant biomass, leaf-root biomass ratio. Therefore, C-N balance in F. unibracteata
would be a better index of resource strategy.