Plowing by tractor or by man can get a good effect for artificialregeneration.
人工促进效果以拖拉机耙地和人工耧地为好；
2
So we should adopt the artificialregeneration measures such as replanting, sowing.
因此，应通过林下补植、补播的措施来加以人工更新。
3
Objective To observe clinic curative effect on treating serious periodontitis with BAM artificial bone by periodontal guided bone regeneration(PGBR) technique in one year.