沙地樟子松人工林密度调控技术研究  

Research on Density Control Technology of Pinus sylvestris var.mongolica Plantation in Sandy Land

作　　者：杨树军 尤国春 安宇宁 刘敏 曹怡立 Yang Shujun;You Guochun;An Yuning;Liu Min;Cao Yili(Liaoning Research Institute of Sandy Land Control and Utilization,Liaoning Zhanggutai Horqin Sandy Land Ecosystem Research Station,Fuxin 123000,China)

机构地区：[1]辽宁省沙地治理与利用研究所,辽宁章古台科尔沁沙地生态系统国家定位观测研究站,辽宁阜新123000

出　　处：《防护林科技》2023年第2期8-12,共5页Protection Forest Science and Technology

基　　金：国家重点研发计划项目(2017YFD0600505)。

摘　　要：针对沙地樟子松人工林,分别对其幼龄期、中龄期、近熟期连续进行密度调控技术试验,结果表明:密度调控对沙地樟子松人工林胸径、蓄积生长影响显著,对树高影响不显著。幼龄期适宜保留密度为1300~1400株·hm^(-2),中龄期适宜保留密度为900~1000株·hm^(-2),近熟期适宜保留密度为500~600株·hm^(-2)。首次密度调控时间以14~16年生为宜,间隔期为5~7年。The density control technology of Pinus sylvestris var.mongolica plantationin sandy land was studied at young,middle and near maturity stages.The results showed that density control had significant effect on DBH and volume growth of Pinus sylvestris var.mongolica plantation,but not on tree height.The optimum retention density at young,middle and near maturity stages were 1300-1400 plants,900-1000 plants and 500-600 plants per hectare respectively.The optimum stand age of density control for the first time was 14-16 years,and the interval was 5-7 years.

关 键 词：沙地 樟子松人工林 密度调控 

分 类 号：S791.253[农业科学—林木遗传育种] S758.5[农业科学—林学]