文章编号：1673-887X(2023)05-0122-03红锥+厚荚相思同龄混交林的生长量与土壤肥力研究莫先杰，叶燕烙，莫冰萍（广西壮族自治区国有高峰林场，广西壮族自治区南宁530001）摘要对高峰林场红锥+厚荚相思同龄混交林及对照林分红锥纯林采取相同的营林措施，监测2种林分在16~22年龄时在林木生长量、土壤pH值和土壤养分含量等方面的动态变化及差异。结果表明，林分第16年到第22年，混交林和纯林内所有树种高生长和径生长均逐年增加；林分林龄16~19年，红锥+厚荚相思同龄混交林和红锥纯林单位面积蓄积量均逐年增加。林龄20年时间伐，间伐当年混交林和纯林单位面积蓄积量均降低；在间伐后的21~22年，混交林和纯林单位面积蓄积量均逐年增加。红锥纯林单位面积蓄积量增长速度比混交林快，且在期末高出混交林34.7%。混交林pH值高于纯林，表明混交林降酸能力比纯林好。混交林土壤肥力比纯林的高。关键词红锥；厚荚相思；同龄混交林；生长量；土壤肥力中图分类号S714文献标志码Adoi:10.3969/j.issn.1673-887X.2023.05.046StudyontheGrowthAmountandSoilFertilityoftheSameAgeMixedForestofCastanopsishystrixandAcaciacrassicarpaMoXianjie,YeYanlu,MoBingping(State-ownedGaofengForestFarmofGuangxiZhuangAutonomousRegion,Nanning530001,GuangxiZhuangAutonomousRegion,China)AbstractAbstract：ThesameforestmanagementmeasuresweretakenforthesameagemixedforestwithCastanopsishystrix+Acaciacrassi‐carpaandthepureforestwithdividendconeinthecontrolforest,andthedynamicchangesanddifferencesintreegrowth,soilpHvalueandsoilnutrientcontentofthetwostandsweremonitoredattheageof16~22years.Theresultsshowedthattheheightanddi‐ametergrowthofalltreespeciesincreasedyearbyyearfromthe16thtothe22ndyearinmixedandpurestands.Thestandagewas16~19years,andthestockperunitareaofCastanopsishystrixandAcaciacrassicarpamixedforestandredconepureforestin‐creasedyearbyyear.Thestockvolumeperunitareaofmixedforestandpureforestdecreasedwhentheforestwasintercutfor20years.In21~22yearsafterthinning,thestockperunitareaofmixedforestandpureforestincreasedyearbyyear.TheaccumulationperunitareaofpureCastanopsishystrixforestincreasedfasterthanthatofmixedforest,andwas34.7%higherthanthatofmixedforestattheendoftheperiod.ThepHva...
