论文部分内容阅读
内蒙古奈曼旗兴隆沼林场在 1992年引种了长白松、斑克松和小干松 ,以樟子松作为对照 ,营造了试验林。到 1999年已经基本稳定 ,而且生长量除小干松以外都接近于樟子松。长白松树高为樟子松的 112 .5% ,胸径为 88.6 % ;斑克松树高和胸径分别为樟子松的 87.5%和 54.3% ;小干松树高为樟子松的 2 9.2 %。试验认为 ,长白松和斑克松可以扩大造林 ,小干松虽然保存率比较低 ,生长比较缓慢 ,但是也已经稳定下来 ,应该继续进行试验观察
Inner Mongolia Naiman Banner Xinglong biogam farm in 1992 introduced Changbai pine, Bose pine and small dry pine, with Pinus sylvestris as a control, to create a pilot plantation. By 1999, it had been basically stable, and its growth was close to Pinus sylvestris except for Pinus sylvestris. The height of Pinus thunbergii was 112.5% of Pinus sylvestris var. Mongolica and the diameter at breast height was 88.6%. The height and DBH of Pinot pine were 87.5% and 54.3% respectively of Pinus sylvestris var. Mongolica and 22.2% of Pinus sylvestris. According to the experiment, the plantation of Pinus bungeana and Bortala is able to expand afforestation. Although the preservation rate is relatively low and the growth is relatively slow, it has also stabilized and the experiment should be continued