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[目的]探索重庆市柏木生长性状变异情况,以期为后期开展良种选育及改良奠定基础。[方法]对重庆市綦江、彭水和酉阳3个优良柏木林分的生长性状等进行调查。[结果]彭水林分生长表现最好,綦江林分次之,酉阳林分最差,材积生长平均值分别为0.14、0.11和0.06 m3。林分间,主要生长指标的变异系数均在11.31%以上,材积变异系数最大为39.11%,林分内,树高的变异基本相当,均在20%左右。胸径的变异以綦江最大,为42.42%,酉阳次之。材积的变异与胸径一致,结实系数以彭水林分变异最大,利用该林分建立母树林或对其所选优树建立种子园比较有利。[结论]开展柏木种源选择很有必要。
[Objective] The research aimed to explore the variation of growth traits of cypress wood in Chongqing in order to lay the foundation for the breeding and improvement of elite seeds in later period. [Method] The growth traits of three elite cypress forests in Qijiang, Pengshui and Youyang in Chongqing were investigated. [Result] The growth performance of Pengshui forest was the best, followed by that of Linjiang forest. The weeds of Youyang forest were the worst, and the average volume growth was 0.14, 0.11 and 0.06 m3 respectively. The variation coefficient of main growth index was above 11.31% and the maximum of CV was 39.11%. In the stand, the variation of tree height was almost the same, about 20%. The variation of DBH was the largest in Qijiang, with 42.42% followed by Youyang. The variation of volume was consistent with the DBH, and the coefficient of variation was the largest in Pengshui forest. It was more beneficial to establish the parent forest by using this forest or establish the seed orchard for its selected superior tree. [Conclusion] It is necessary to carry out the provenance selection of cypress wood.