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以引自在甘肃省小陇山林科所经过苗圃测定3年生云杉9个种195个家系和378个无性系为研究对象,观测了各种、家系和无性系的成活率和保存率、树高、当年新梢长、地径、东西和南北平均冠幅、一级分枝数,并对种、家系和无性系间6个生长性状指标进行了分析,采用综合选择出优良种、家系和无性系。结果表明:云杉种、家系和无性系间6个生长性状间均存在极显著差异;主要生长指标树高与其它生长指标都存在极显著的相关;多性状综合选择出1个优良种62个优良家系和无性系,这1个优良种的现实遗传增益7年生平均树高比其它8个种平均树高提高52.2%,当年抽稍提高32.1%,地径提高37.5%,冠幅提高52.0%,一级分枝数33.3%,保存率提高6.6%。62个优良家系和无性系的现实遗传增益7年生平均树高比其它511个家系和无性系平均树高提高19.03%,当年抽稍提高15.3%,地径提高12.5%,冠幅提高16.6%,保存率提高9.3%。
Based on the survey of 195 pedigrees and 378 clones of 9 species of 3-year-old spruce in nurseries of Xiaolongshan Forestry Bureau in Gansu Province, the survival rate and preservation rate of various species, pedigrees and clones were observed. Tree height, new shoot length, diameter, east-west and north-south average crown, a number of branches, and the species, family and clonal 6 growth traits were analyzed, using a comprehensive selection of superior species, family And clones. The results showed that there were extremely significant differences among the six growth traits among spruce species, pedigree and clones. The tree height of the main growth index had extremely significant correlation with other growth indexes. A total of 62 elite species Excellent families and clones. The average tree height of seven-year-old genetic gain of one excellent species increased by 52.2% than the average of the other eight species, increased by 32.1%, increased by 37.5% in diameter and increased by 52.0% , A branch number 33.3%, the preservation rate increased 6.6%. The average tree height of 7-year-old genetic improvement of 62 elite families and clones was 19.03% higher than that of other 511 families and clones. In the same year, the 7-year average tree height increased by 15.3%, the diameter increased by 12.5%, the crown increased by 16.6% Save rate increased by 9.3%.