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时间:2020-04-14
《丽江云杉优良家系选择-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第42卷,第4期湖南林业科技Vo1.42.No.42015年8月HunanForestryScience&TechnologyAug.,2015丽江云杉优良家系选择胡华,王军辉,颜芳,刘军,田开春,王毅敏。,高晗。,祁万宜。(1.宜昌市林业科学研究所,湖北宜昌443111;2.国家林业局林木培育重点实验室中国林业科学研究院林业研究所,北京100091;3.宜昌市夷陵区国有樟村坪林场,湖北宜昌4431I1)摘要:以引自甘肃省小陇山林业科学研究所的15个丽江云杉家系3年生苗为材料,于国有樟村坪林场造林,观测各家系的成活率、保存率、树高、当年新梢长、地径、南北平
2、均冠幅和一级分枝数,并对家系间6个生长性状指标进行分析。结果表明:7年生时,15个丽江云杉家系间保存率和新稍长的差异均不显著,树高和冠幅的差异均达极显著,地径和一级分枝数的差异均达显著。综合选择出的3个优良家系7年生平均树高比其它12个家系的平均树高提高16.5%,当年新稍长提高10.9%,地径提高4.6%,冠幅提高10.9%,保存率提高3.4%。关键词:丽江云杉;家系;生长;选择’中图分类号:S791.18.o4文献标识码:A文章编号:1003—5710(2015)04—0016—04doi:10.3969/j.issn.1003—5710.2015.0
3、4.005SelectionofsuperiorexcellentfamiliesofPiceafikiangensisHUHua,WANGJunhui,YANFang,LIUJun,TIANKaichun,WANGYimin,GAOHan,QIWanyi。(1.ForestryResearchInstituteofYichangCity,Yichang443111,China;2.KeyLaboratoryofFor~tCultivation,StateForestryAdministration;ResearchInstituteofForestry,
4、ChineseAcademyofForestry,Beijing100091,China;3.State-ownedForestFarmofZhangchunping,YilingDistrictofYichangCity,Yichang43111,China)Abstract:Takingtheexperimentmaterialofthree-yearPicealikmnge~of15familiesatState-ownedForestFarmofZhangcunpingwhichintroducedfromXiaolongshanForestryI
5、nstituteofGansuProvince.Thesixgrowthcharacterindexesbetweengenealogyisanalyzedasfollowing:observationofsurvivalrateandsurvivalrateofsystem.conductedtostudythetreeheight,thelengthofnewshoot,thenumberoffirstorderlateralbranches,thebudnumberofleadingshoot,thenorth-southcrownwidthandt
6、hepreservingrateoftotallengthoftopwheellateralbranch.Theresetsshowedthatthediferencesofsurvivalratebetweenfamilyandthenewlongerof15P_likiangensisin7year-oldweren’tsignificant.andthetreeheightandcrownwidthdiferenceswereverysignificantly,andthediferenceofgrounddiameterandthenumberof
7、primarybrancheshavesignificant.Comprehensiveselectionofthreefinefamilyof7year-oldP.1ikiangensisarein·creafied16.5%ratiothantheaveragetreheightincreasedof12others,andthelengthofnewshot,grounddiameter,crownwidthandsurvivalrateinereased10.9%,4.6%,10.9%and3.4%,inspectively.Keywords:Pi
8、cealikiangensis;family;growth;sel
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