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根据大兴安岭的具体条件,对兴安落叶松容器苗培育技术进行了研究.选择出了适于苗木生长,便于上山造林的简式蜂窝育苗纸容器;配制出适宜兴安落叶松苗木生长的培养基,即苗圃表土70%+新鲜锯末20%+腐熟人粪尿土8%+磷酸一铵(或二铵)2%,并获得相应的培养基理化性质;总结出塑料大棚内培育兴安落叶松容器苗的关键技术;提出了解决容器苗根系变形的新途径——碳酸铜化学修根.经碳酸铜处理后容器苗Ⅰ级侧根长度明显缩短,防止了根系变形.适宜的碳酸铜浓度(100～150g/L)可增加苗木根系中上层的新根表面积指数,提高苗木的根生长潜力,而且造林后能提高根系中上层新根数量.
According to the specific conditions of Daxing’anling, this paper studied the cultivation technology of container seedlings of Larix gmelinii, selected the simple honeycomb seedling raising paper container suitable for the growth of seedlings and afforestation in the mountains, and prepared the medium suitable for the growth of Larix gmelinii seedlings, that is, The nursery topsoil 70% + fresh sawdust 20% + decomposed human excrement of soil 8% + monoammonium phosphate (or diammonium) 2%, and access to the appropriate physical and chemical properties of the medium; summed up the cultivation of Larix gmelinii container seedlings A new way to solve the root deformation of container seedlings was put forward.After the copper carbonate treatment, the first-order lateral root length of container seedlings was significantly shortened, which prevented the root deformation.The suitable concentration of copper carbonate (100-150 g / L) could increase the new root surface area index in the upper layer of nursery stock, increase the root growth potential of nursery stock, and increase the number of new roots in middle and upper roots after afforestation.