林业科技情报2023Vol.55No.3不同更新方式和种植单位对尾巨桉幼林生长的影响李朝国杨小松段萍果王斐贲园韩俊学(广西壮族自治区国有雅长林场,广西百色533000)[摘要]采用固定标准地法对广西西林县2种不同更新方式(植苗更新和萌芽更新)的尾巨桉生长特性进行分析比较,并对比分析林场和农户种植的尾巨桉年平均生长量和造林成活率。结果表明:2种更新方式的尾巨桉人工林在桂西南均具有快速生长的特性,其中萌芽林树高、胸径年平均生长量以及成活率均大于植苗林,萌芽林造林可带来高于植苗林的生长效果和经济收益,萌芽林对环境的适应性更强;在不同种植单位上,林场尾巨桉与农户尾巨桉树高、胸径年平均生长量间存在显著差异,且雅长林场尾巨桉生长量比农户尾巨桉生长量大,说明科学、系统的尾巨桉营造和抚育管理方法能显著提高尾巨桉的生长效益。[关键词]萌芽林;植苗林;尾巨桉;生长量中图分类号:S792文献标识码:A文章编号:1009-3303(2023)03-0016-03EffectsofDifferentRegenerationMethodsandPlantingUnitsontheGrowthofEucalyptusGrandisYoungForestLiChaoguoYangXiaosongDuanPingguoWangFeiBiYuanHanJunxue(GuangxiYangchangStateForestFarm,Baise533000,Guangxi,China)Abstract:ThegrowthcharacteristicsofEucalyptusgrandisintwodifferentregenerationmethods(seedlingregenerationandbudregen-eration)inXilinCounty,Guangxiwereanalyzedandcomparedbyfixedstandardplotmethod,andtheaverageannualgrowthandsur-vivalrateofEucalyptusgrandisplantedbyforestfarmsandfarmerswerecompared.Theresultsshowedthatthetworegenerationmeth-odsofEucalyptusgrandisplantationhadthecharacteristicsofrapidgrowthinsouthwestGuangxi.Theaverageannualgrowth,diameteratbreastheightandsurvivalrateofsproutforestwerehigherthanthatofseedlingforest.Thesproutforestcouldbringhighergrowtheffectandeconomicbenefitsthanseedlingforest,andthesproutforesthadbetteradaptabilitytotheenvironment.Indifferentplantingunits,thereweresignificantdifferencesintheaverageannualgrowthofheightandDBHbetweenEucalyptusgrandisandfarmers,andthegrowthofEucalyptusgrandisonYachangfarmwashigherthanthatoffarmers,indicatingthatscientificandsystematicmethodsofconstructionandmanagementofEucalyptusgrandiscouldsignificantlyimprovethegrowthbenefitsofEucalyptu...
