不同代次杉木种子园子代中龄期生长测评  

Offspring Evaluation of Middle-age Growth in Different Generations Seed Orchars of Chinese Fir

作　　者：练伟春 吕宇宙 杨伯群 刘伟新 郑会全[2] 王润辉[2] LIAN Weichun;LV Yuzhou;YANG Boqun;LIU Weixin;ZHENG Huiquan;WANG Runhui(Xiaokeng Forest Farm in Qujiang District of Shaoguan City,Shaoguan 512162,Guangdong,China;Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization/Guangdong Academy of Forestry,Guangzhou 510520,China)

机构地区：[1]韶关市曲江区国有小坑林场,广东韶关512162 [2]广东省森林培育与保护利用重点实验室/广东省林业科学研究院,广州510520

出　　处：《林业科技情报》2024年第4期1-3,共3页Forestry Science and Technology Information

基　　金：国家重点研发计划项目子课题(2022YFD2200201-6)资助。

摘　　要：为测定评价杉木不同代次种子园子代生长情况,选择不同地区、不同代次杉木种子园子代材料营建生长测定林分,对林分中龄期的树高、胸径和单株材积进行统计分析,结果表明,不同代次子代间存在极显著的差异,达到统计学上的极显著水平,不同代次子代生长差异真实存在;树高、胸径和单株材积不同代次子代生长由大到小的顺序一致,均为小坑2.5代>小坑1.5代>信丰3代>信丰2.5代>韶关普通种>信丰15代,小坑2.5代生长最优。本研究结果证明粤北杉木栽培区以本地高世代杉木种子园生产的子代更适合,生长表现更好。In order to measure and evaluate the growth of different generations of Chinese fir seed gardens,materials of different regions and different generations of Chinese fir seed gardens were selected to build growth measurement stands,and the height,DBH and volume per tree at the middle age of the stands were statistically analyzed.The results showed that there were extremely significant differences among the offspring of different generations,which reached a statistically significant level.The growth difference of different subgenerations is real.The order of tree height,DBH and volume per plant was the same,which was Xiaokeng 2.5 generation>Xiaokeng 1.5 generation>Xinfeng 3 generation>Xinfeng 2.5 generation>Shaoguan common seed>Xinfeng 15 generation.Xiaokeng 2.5 generation had the best growth.The results of this study prove that the offspring produced by the local high generation Chinese fir seed orchard are more suitable and have better growth performance in the northern Guangdong Chinese fir cultivation area.

关 键 词：杉木 种子园 不同代次 生长测评 

分 类 号：S722.34[农业科学—林木遗传育种]