辽宁杨树造纸用材林栽培技术的研究

Study on the Cultural Techniques of Poplars for Paper Making Plantations in Liaoning Province

试验采用密度、品种、土壤培肥３因素裂区设计，对试验因素各生长指标进行方差分析及ＬＳＤ检验．试验林在计算机精确造材基础上进行产量及经济效益分析．８年研究结果表明：辽宁杨树造纸用材林品种应选择辽宁杨等早期速生、制浆性能优良的美洲黑杨及欧美杨良种；栽培密度确定为１６６７～１１１１株／ｈｍ２；１６６７株／ｈｍ２密度轮伐期确定为６年。

The split spot design with three factors,density,species and soil fertilization,was used in the experiment.The analyses were carried out on the variance,LSD test,yield and economic benefits.The results of the eight years(1987～1995)researches show that,①in Liaoning province the species of Populus × Liaoningensis, P.deltoides and P.euramericana shall be selected for the paper making plantations,②the planting density is determined at 1 667 trees/hm 2 or 1 111trees/hm 2,and the culture rotation is 6 or 7 to 8 years,respectively.