不同产地红松的早期生长表现与初步选择

对来自辽宁、吉林、黑龙江3省17个产地的红松生长性状的早期表现进行了调查和分析,结果表明:产地间的树高变异系数最大,为0.73%～17.39%,平均值为9.96%,辽宁省本溪县人工林变异性最小。Duncan法多重比较结果表明:树高生长较快的前7个产地为辽宁省草河口、本溪县清河城的种子园,本溪县、宽甸县、东港市、草河口、桓仁县的人工林,树高均值为61.64 cm,超过总体均值21.31%,超过辽宁省凤城市人工林对照20.72%,超过吉林、黑龙江地区人工林均值48.06%,超过生长较慢的8个产地林分均值48.96%,而地径生长的排序情况同树高生长的排序基本一致。前7个产地的树高、地径平均遗传增益分别为10.73%和7.75%。利用多性状综合评定法初步筛选出辽宁省本溪县人工林和辽宁省草河口种子园为入选产地林分。

Early Performances of Growth Traits and Preliminary Screening of Different Seed Sources of Pinus koraiensis

A survey was conducted to study the early performance of growth traits of Pinus koraiensis from 17 seed sources in Liao-ning,Jilin and Heilongjiang Provinces.Results showed that the coefficient of variation for tree height among the seed sources was the highest,ranging from 0.73% to 17.39%,with an average of 9.96%.The uniformity of the plantations in Benxi County of Liaoning Province was the highest.Results by Duncan multiple comparison method indicated that the first seven seed sources with favorable tree height were seed orchards in Caohekou and in Qinghecheng of Benxi County,and plantations in Benxi,Kuandian,Donggang,Caohekou and Huanren,with an average tree height of 61.64 cm,which was 21.31% higher than the total mean,20.72% higher than that of the control of plantations in Fengcheng,48.06% higher than the average of plantations in Jilin and Heilongjiang Provinces,and 48.96% higher than the average of eight seed sources which were slowest in growth.The sequence of growth of root-collar diameter was the same as that of tree height.The genetic gains of tree height and root-collar diameter from the first seven seed sources were 10.73% and 7.75%,respectively.The plantation in Benxi County and the seed orchard in Caohekou Town were initially selected using the multi-character integrated evaluation method.