馬尾松制漿造紙材良種選育目標及不同變異層次選擇策略

徐立安　王章榮　

摘　要：以7個試驗點12年生馬尾松種源試驗林及2個試驗點11年生優(yōu)樹子代測定林為基礎材料，在研究馬尾松主要性狀不同層次遺傳變異的基礎上，對馬尾松制漿造紙材良種選育目標及在不同變異層次的選擇策略進行了探討。結果表明，馬尾松制漿造紙材的良種選育應以材積和木材基本密度作為主要指標，首先進行種源的選擇，在此基礎上進行林分和個體的選擇。種源選擇以材積生長為主，不同的造林區(qū)應用不同的最適種源：分布區(qū)南部選用的優(yōu)良種源來自該區(qū)域內；分布區(qū)中部選用的優(yōu)良種源來自南部種源及中部區(qū)域內南部的一些種源；而分布區(qū)北部造林應選擇分布區(qū)中部（特別是北緯26.5°～28.0°區(qū)域內）的優(yōu)良種源。林分選擇僅以生長量作為主要指標。而材積和木材基本密度在林分內個體的選擇中具有同樣的重要性。
關鍵詞：馬尾松；制漿造紙材；選育；材積；木材基本密度
分類號：S722　文獻標識碼：A
文章編號：1000-2006（2001）02-0019-04

Index and Strategy in Different Variation Levels on Selection Breeding for Pulpwood in Masson Pine

XU Li-an（College of Forest Resources and Environment Nanjing Forestry University,Nanjing 210037,China）　
WANG Zhang-rong（College of Forest Resources and Environment Nanjing Forestry University,Nanjing 210037,China）　

Abstract：Genetic variations in different levels of masson pine (Pinus massoniana Lamb.) in main traits were studied on the basis of the 12-year-old data of provenance tests at 7 test locations and the 11-year-old data of plus progenies at 2 test locations, and the index and strategy in different variation levels on selection breeding for pulpwood in masson pine was also discussed. The results showed that stem volume (V) and wood basic density (BD) were the most important traits in selection breeding for pulpwood of masson pine and, stand and individul selections shoud be based on the provenance selection. V was the first trait in provenance selection for pulpwood. There were different optimum provenances in different regions: the best provenances in the south of range were from the same region; the best ones in the middle of range were from the south of the same region and from the south of range; then the optimum ones in the north of range were from the middle of range (especially N 26.5°～ 28.0°). V could be regarded as the only trait in stand selection and both V and BD shoud be considered in individual selection within stand.
Keywords：Pinus massoniana; Pulpwood; Selection breeding; Stem volume; Wood basic density