论文部分内容阅读
目前国内外在林业育苗生产上,为提高造林成活率,增强苗木质量,缩短苗木培育周期,促进苗木速生丰产,都在向塑料棚容器育苗的方向发展,尽快实现育苗容器化、温室化、工厂化和机械化。 我站于1981～1982年,进行了两期油松、侧柏、华山松、樟子松和华北落叶松等树种的塑料大,中棚营养土容器育苗试验研究。 大中塑料棚为钢筋混凝土(立柱)竹架式单栋型薄膜结构;大型棚长52米、宽13米、覆盖面积为676平方米;中型棚长23米,宽13米,覆盖面积为
At present, both at home and abroad in forestry nursery production, in order to improve the survival rate of afforestation, enhance the quality of nursery stock, shorten the nursery stock nurturing cycle, and promote fast growing seedlings, are in the direction of plastic nursery container nursery development, as soon as possible nursery container, greenhouse, And mechanization. From 1981 to 1982, I conducted two experiments on the nursery of plastic large and medium shed plastic soil containers for Pinus tabulaeformis, Platycladus orientalis, Pinus armandii, Pinus sylvestris var. Mongolica and Larix principis-rupprechtii. Large and medium-sized plastic shed for the reinforced concrete (column) bamboo frame single-type film structure; large shed 52 meters long, 13 meters wide, covering an area of 676 square meters; medium shed 23 meters long and 13 meters wide, covering an area of