摘要
该试验采用密度、品种、土壤培肥方法３因素裂区设计，对试验因素各生长指标进行统计和分析，同时进行蓄积量、出材率、出材量的计算和经济效益的分析。９年研究结果表明，辽宁省选择早期速生的美洲黑杨和欧美杨造纸林品种，栽培密度确定在１６６７～１１１１株／ｈｍ２，即株行距为２ｍ×３ｍ～３ｍ×３ｍ；轮伐期确定在６～８年。
This paper deals with siviculture techniques of poplar papermaking plantation. By split plot design of density, variant and fertilizing factors,experiment was done to determine the optimum density and final cutting age of carolina poplar and cottonwood species. Growth indices were calculated and analyzed as well as growing stock,output and outturn and benefit. The conclusion is: optimum density is 1 667-1 111 trees/hm 2(2m×3m-3m×3m)and the final cutting age is 6 8 a.
出处
《辽宁林业科技》
1999年第1期20-24,共5页
Liaoning Forestry Science and Technology
关键词
杨树
造纸林
密度
轮伐期
poplar, plantation for paper-making, density, final cutting age
