摘要
对落羽杉属不同种源、家系和树种苗期、幼林期生长量（高、胸径、冠幅）、保存率和生物量及其分配（总生物量，干、枝、叶、根生物量及其比值）进行了５年研究。发现落羽杉不同种源、家系间、内均存在显著的性状变异。变异系数以种源、家系间最大，个体间其次。生物量的变异系数大于生长量。未发现不同种源、家系在不同地点存在明显互作。采用多性状综合选择法评选出７个优良种源、家系或树种（１６００、４０１、中山杉、３０４、５０２、鸡公山落羽杉和７０１），它们的生长量、生物量大，叶生物量较大，地上部分生物量／根生物量比值大。其综合选择指数值比平均值大１３．９７％～３５．３３％，树高比平均值大１１．２２％～２４．４９％，比本地近似树种（江宁池杉）大３４．５４％～４６．１８％；胸径比平均值大１２．８１％～４８．２８％，比江宁池杉大３８．７９％～８２．４２％；总生物量比平均值大５４．５９％～１１０．６７％；保存率一般也高于平均值及本省江宁池杉。这些优良种源、家系或树种可以在江苏全省及国内类似地区作用材、防护和观赏树种推广应用。
Five years studies were made on the variation of provenances and families in Genus Taxodium during seedling to juvenile stage from 1993 to 1997 in Nanjing Jiangsu China.Data were presented on the growth(height,dbh and crown),the survival and biomass allocation(yield of seedling stage,root:shoot+leaves ratio) Significant differences were found among different provenances,families and species in the Genus.Seven supprior provenances(families or species)were selected with multiple selection index They are 1600,401,hybrid of Taxodium ,304,502,Ji Gong San Taxodium and 701.The multiple selection of them are large 13 97%～35 33% than that of the avarage. Author’s address Forestry Research Institute of Jiangsu,Nanjing 211153 PRC
出处
《江苏林业科技》
1998年第1期1-6,共6页
Journal of Jiangsu Forestry Science & Technology
基金
江苏"八五"科技攻关项目
关键词
森林
落羽杉属
种源
生长
生物量分配
Taxodium Rich
T.distichum
Provenance
Growth
Biomass allocation
