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被人们誉为“林业科技之花”的甘河林木种子园建于1966年,占地面积500亩,主要经营树种是兴安落叶松。兴安落叶松是内蒙古大兴安岭林区的主要用材树种,占树种组成的70％以上,是林区的主要经济支柱。林木种子园经过20余年的精心培育,已收集优树555株,建立优树收集区30亩、双采本子代林50亩、单采本子代林450亩及部分示范林。选育出142个优良无性系,其遗传增益平均在10％以上,最好的可达30～50％。在选择优树的过程中,他们还在本林区内发现了绿果类型的兴安落叶松,这种落
Was hailed as “flowers of forestry science and technology” Gan River forest seed orchard was built in 1966, covers an area of 500 acres, the main operating species is Larix glabra. Larix gmelinii Larix ginseng forest is the main timber species in the Greater Xing’an Mountains in Inner Mongolia, accounting for more than 70% of tree species, and is the main economic pillar of the forest. After more than 20 years of intensive cultivation, the tree seed orchard has collected 555 excellent trees, and has established 30 mu of superior tree collection area, 50 acreages of double-sourced books, 450 acreages of single-book native forests and some demonstration forests. 142 elite clones were bred and their average genetic gain was above 10%, with the best up to 30 ~ 50%. In the process of choosing the best tree, they also found in the forest area of green fruit type larch, this fall