云南松(Pinus yunnanensis,Franch)是我国主要用材树种之一。主要分布于云南,以及四川、贵州、广西的一部分地区。我省自开伐森林资源以来,绝大多数为云南松林,即至目前仍占我省木材生产量的90％以上。因此,大片云南松林的采伐迹地更新,是当前我省采伐更新工作中的主要任务之一。现将几年来,对云南松更新工作中的一些粗浅体会和看法提出来,与同志们研究、讨论。一、更新方式云南松种子具翅,传播较远。幼苗的抗旱性较强,与杂草竞争能力也强,是易于天然更新的。在地被物覆盖度小,又有充足种源的情 Pinus yunnanensis (Franch) is one of the main timber species in our country. Mainly distributed in Yunnan, as well as Sichuan, Guizhou, Guangxi part of the area. Since the province has scavenged forest resources, the vast majority of Yunnan pine forests, which still account for more than 90% of the province’s timber production. Therefore, the removal of a large number of logging deforestation in Yunnan pine forest is currently one of the main tasks in the logging and updating work in our province. Now in the past few years, some superficial experiences and opinions in the work of Yunnan pine are put forward and studied and discussed with the comrades. First, the update method Yunnan pine seed wings, spread further. Seedlings have stronger drought resistance and stronger competition ability with weeds, so they are easy to be naturally regenerated. In the ground cover is small, there are sufficient provenance