封山育林是依赖原有稀疏的林木和外来种子进行繁衍而发展森林的措施。用这种方法发展森林,不需要人工进行整地、选种、育苗、造林和抚育,可节省大量的资金和劳力。腾冲县古永地区20多万亩采伐迹地的更新,就是没用多少钱而依靠天然更新和封山育林恢复起来的,现长势很好。保山县象鼻山一片人为削成的陡坡上,由于人畜无法上去活动,仅几年功夫,以光皮桦、云南松、西南木荷为主的针阔混交林就自然形成了。类似情况,全省各地都有。可见,封山育林是多快好省地发展营林生产的有效措施,也是维护自然生态平衡,加速绿化进程的重要方法。可是,长期以来,由于人们对封山育林认识不足,重视不够,因而没很好利用这一自然能力,应该说这是营林工作上的一大失策。我省有宜林荒山、采伐迹地及疏灌木地一亿多亩,其中不少地方适于封山育林。希望有关部门切实在思想和行动上重视 Closing hillsides for afforestation is a measure that relies on the original sparse trees and exotic seeds for reproduction and development of forests. The development of forests in this way does not require man-made land preparation, seed selection, nursery, afforestation and nurturing, which can save a lot of money and labor. Tengchong County, Gu Yong area more than 200 acres of deforestation land of the update, that is, how much money without relying on natural renewal and closing Hillsides afforestation, is now growing very well. Xiangshan Mountain, Baoshan County, a piece of artificially cut steep slopes, due to human and animal can not go up activities, only a few years of effort, the light birch, Pinus yunnanensis, Southwest Schima superba natural coniferous and broad-leaved forest naturally formed. A similar situation, all over the province have. Therefore, closing hillsides to facilitate afforestation is an effective measure to develop silviculture more efficiently and economically. It is also an important method to maintain the natural ecological balance and speed up the afforestation process. However, for a long time, people did not properly utilize this natural ability due to lack of understanding and insufficient understanding of closing off forests for afforestation. This should be said that this is a major mistake in the work of silviculture. There is arable forest in our province, over 100 million mu of deforestation and shrub land, many of which are suitable for closing hillsides for afforestation. I hope relevant departments will really value their thoughts and actions