论文部分内容阅读
本文通过对引种到集安市区的班克松、刚松、美国白松等10余个树种的生长表现的长期观察分析认为：这些优良的国外重要造林树种能够适应引种地的气候及立地条件，同当地同类乡土树种相比表现为抗逆、连生，其中班克松、欧洲赤松、刚松业已大量开花结实，其树高、胸径生长量分别超过对照樟子松的154．8％、133.9％、107.8％、125.8％、137.3％、134.7％。
Based on the long-term observation and analysis of the growth performance of more than 10 tree species such as Bancason, Gusong and Baisong, introduced into the urban area of Ji’an, this paper argues that these excellent foreign afforestation species can adapt to the climate and site conditions of the introduced area, Compared with the native native trees in this area, the tree species showed resistance and even regeneration. Among them, the population of Banxson, Pinus koraiensis and Pinus pine grew abundantly and its tree height and diameter at breast height increased by 154.8% and 133.9% respectively %, 107.8%, 125.8%, 137.3%, 134.7%.