李午平　郭光復　唐效蓉　陳明皋　宋慶安　

摘　要：根據(jù)湖南省44縣(市)優(yōu)樹初選與復選檔案及湖南省馬尾松產區(qū)區(qū)劃研究結果，運用主分量分析方法，將325株優(yōu)樹聚類成4個地理類群，據(jù)此將全省劃分為4個育種區(qū)，并根據(jù)各區(qū)特點確定育種目標.
關鍵詞：馬尾松優(yōu)樹； 主分量分析； 育種區(qū)； 育種目標
分類號：S791.248.04　文獻標識碼：A
文章編號：1000-2502(2001)01-0030-04

On the Distribution of Masson Pine Surplus Trees and Breeding Region Zoning in Hunan Province

LI Wu-ping（Forestry Academy of Hunan Province, Changsha 410004, Hunan, China）　
GUO Guang-fu（Forestry Academy of Hunan Province, Changsha 410004, Hunan, China）　
TANG Xiao-rong（Forestry Academy of Hunan Province, Changsha 410004, Hunan, China）　
CHEN Ming-gao（Forestry Academy of Hunan Province, Changsha 410004, Hunan, China）　
SONG Qing-an（Forestry Academy of Hunan Province, Changsha 410004, Hunan, China）　

Abstract：According to the preliminarily selection and re-s election data of 325 masson pine surplus trees in 44 countries of Hunan Province and the result of masson pine production region zoning in this province, the su rplus trees have been classified into 4 geographical clusters by means of princi pal components analysis. By these clusters the province has been divided into 4 breeding regions and each region s breeding targets have been confined.
Keywords：masson pine surplus tree; principal components an alysis; breeding region; breeding target