Pmax,LSP,LCP and PR of lower crown of pruned paulowniawere 27.70%,36.74%,34.22% and 36.80% higher than that of the control. But there was no significant difference between two treatments in the upper crown.

• 修枝后泡桐下层树冠的Pm ax、LSP、LCP、PR较对照分别高27.；70%25、36