In this study,the corresponding changes in some certain nutrients and the concentration of hormones of Osmanthus fragrans‘Jingui' in more than 40 years old during the process of flower bud differentiation were determined.The results showed that during the process of flower bud differentiation,the content of nutrients and hormones in bud were higher than that in leaves,and the change range in bud were larger than in leaves,change phase,substance changes in bud had a more directed and closed relationship to t...