Experiment on regeneration of old Carya cathayensis forest by stumping sho-wed that the yield increased by 74%, mother culm increased the capability of sprouting leaderbranch by 16 times and 1.9 time for new tip increment of bearing branches.

• 通过对山核桃老林进行截干更新；结合综合处理；其产量增加74%25；主干萌发新主枝能力提高16倍；长果枝新梢生长量提高1.；9倍。