摘要
对南门峡林区青海云杉造林密度进行研究,结果表明,以青海云杉造林密度前期9990株.hm-2,以群体优势保证成活率,促进高生长,后期应进行抚育至密度为3090株.hm-2为宜,随着树木的增高增大,适宜密度是一个变数,需要在生长过程中不断调整,有人在针叶树造林过程中采取丛植法以促进造林成活率、保存率,这种做法不可取。
Forestation density of Qinghai Spruce was studied in Nanmenxia forest region Huzhu. The results showed the first forestation density of Qinghai Spruce was 9990 truck·ha^-1, survival rat was possessed with boil superiority, high growth was promoted. The better density after that is 3090truck·ha^-1. the suitable of density is a variable with trees growth. It is need adjusted continuously during their growing. It is not a good method forestation survival rat is promoted by group planting during forestation.
出处
《青海农林科技》
2008年第1期24-26,共3页
Science and Technology of Qinghai Agriculture and Forestry
关键词
青海云杉
造林密度
研究
林区
Qinghai Spruce
Forestation density
Study
Forest region
