论文部分内容阅读
森林人工更新是恢复和扩大森林面积的主要措施。也是一項极其复杂细緻的工作,它涉及到土壤、植被以及与更新树种的林学特性有关的一切农业技术措施。随着我国社会主义建设事业的迅速发展,木材采伐量和新的采伐基地日益增多,采伐跡地的面积出将逐年扩大。尤其在天然更新有困难的情况下。人工更新工作在保証恢复森林資源和扩大森林面积上所起的作用将显得特别重要了。华山松生长迅速,根据諶萝异同志在鄂西高山地区,对生长于同一地区的23年生华山松和杉木生长量相比较:杉木高生长仅为华山松的76.72％,胸高直径生长仅为华山松的56。
Artificial forest regeneration is the main measure to restore and expand forest area. It is also an extremely complex and meticulous task that involves soil, vegetation and all agro-technical measures related to the regenerative tree species. With the rapid development of China’s socialist construction cause, the amount of wood harvesting and the new logging base are increasing day by day, and the area of deforestation will increase year by year. Especially in the case of natural renewal difficulties. The role of manual regeneration in ensuring the restoration of forest resources and expanding forest area will be of particular importance. The growth of Pinus armandi is rapid, according to the difference between the growth of 23-year-old Pinus armandii and Chinese fir grown in the same area, according to Comrade Chen Loren, the height growth of Chinese fir is only 76.72% 56