论文部分内容阅读
种苗是造林的物质基础。“有了优良品种,即不增加劳动力、肥料,也可获得较多的收成。”林木良种化,是培育速生丰产林的重要环节,已引起普遍重视。树木种子园是具有优良遗传特性的树木种子的繁殖场,它的主要任务是提供品质好、生活力高的林木良种。杉木是我国的优良用材树种。为了适应今后发展杉木林,提高杉木质量的要求,在文化大革命的推动下,我们在叙永县山地试行培植杉木种子园。1968年建成嫁接种子园70亩,嫁接后第二年即开始结果。1971年收获第一批种
Seedling is the material basis for afforestation. “With excellent varieties, that is, without increasing labor, fertilizer, but also get more harvest.” Forest tree species, is an important part of cultivating fast-growing high yield forests, has attracted widespread attention. Tree seed orchard is a breeding ground for tree seeds with excellent genetic characteristics. Its main task is to provide high quality and high-quality tree species. Chinese fir is a good timber species. In order to adapt to the future development of Chinese fir forest, improve the quality of Chinese fir requirements, under the impetus of the Cultural Revolution, we planted in the mountains of Xuyong County fir seed orchard. 1968 grafted seed orchard built 70 acres, the second year after grafting began the result. The first batch of harvest in 1971