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樟子松是大兴安岭地带性森林植被的建群乔木树种,是半干旱风沙草原区营造防风固沙林、水土保持林,草牧场防护林和用材林的主要造林树木之一。传统造林工艺技术主要是春季裸根苗造林,因小苗失水过多,降低了造林成活率,延长了苗木的缓苗期。研究解决樟子松抗旱造林工艺技术,提高樟子松造林“三率”,扩大樟子松造林比例,加快防护林体系建设速度,意义很大。一、新工艺技术要点和试验内容、方法(一)新工艺技术要点改革传统樟子松造林工艺技术的要点是变小苗直接大面积造林的粗放经营,为小苗就近集中培育大苗的集约经营;变春季裸根小苗造林为多季带土坨大苗就近移植造林;变密植为稀植、一次成林。这样做不仅调整了育苗地与造林地生态条件差异过大的矛盾,而且采取大苗壮苗,移植时带土坨伤根很轻,根系基本完整,外生菌根不损失,为提高“三率”奠定了基础。(二)试验内容和方法本试验结合生产集中培育大苗。试验地
Pinus sylvestris var.mongolica is a built-up tree species of zonal forest in Daxingan Mountains. It is one of the main afforestation trees in the semi-arid sandy steppe area to create windbreak and sand fixation forest, soil and water conservation forest, grassland protection forest and timber forest. Traditional afforestation technology is mainly spring bare root seedling afforestation, excessive water loss due to seedlings, reducing the survival rate of afforestation, extending the seedling remission period. Studying and solving the drought-resistant afforestation technology of Pinus sylvestris var. Mongolica, increasing “three rates” of afforestation of Pinus sylvestris var. Mongolica, expanding the proportion of afforestation of Pinus sylvestris var. Mongolica and speeding up the construction of shelterbelt system are of great significance. First, the main points of the new technology and test methods and methods (a) the main points of the new technology Reformation of the traditional Pinus sylvestris afforestation technology is the main point of small plants direct large-scale afforestation of the extensive management of seedlings to focus on the intensive cultivation of large seedlings intensive operation; variable Bare spring root nursery afforestation for the multi-season with Tuo Tuo seedlings near transplanting afforestation; dense planting for planting thin, once into a forest. In doing so, we not only adjusted the contradiction between the difference in ecological conditions between the nursery area and the afforestation area, but also took the seedlings with strong seedlings. When transplanted, the roots with Tuo Tuo were very light, the root system was basically intact, and the ectomycorrhiza was not lost. "Foundation. (B) test content and methods This experiment combined with the production of concentrated cultivation of large seedlings. Test ground