| 摘要: |
| 以树高、胸径、材积为生长量指标，结合干形、冠幅、皮厚等形质指标，采用5株优势木对比法对40 a生湿地松(Pinus elliottii)、13~40 a生加勒比松(P. caribaea) 人工林开展优树选择研究，提出优树选择标准。40 a生湿地松优树树高、胸径、单株材积分别大于5株优势木平均值的1%、15%、35%以上，树干通直，共选择出优树10株，入选率为 4348%。13～40 a生加勒比松优树树高、胸径、单株材积分别比5株优势木平均值大8%～12%、15%～22%、49%～70%，树干通直，共选择出优树77株，入选率为 4919%。湿地松、加勒比松优树选择应以生长性状为主要目标，同时注重木材密度、产脂等性状的选择，进而丰富其育种群体的遗传多样性。 |
| 关键词: 湿地松 加勒比松 人工林 优树 选择标准 |
| DOI： |
| 分类号:s791 |
| 基金项目:国家林业局林业公益性行业科研专项“国外松高世代良种培育关键技术研究”(20110414)；“十二五”农村领域国家科技计划专题研究任务“湿地松和湿加松育种及繁育技术研究与示范”(2012BAD01B0203-02)。 |
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| Selection of Superior Trees of Pinus elliottii and P. caribaea in Plantation |
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Li Yi-Liang and ZHAO FENCHENG
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Guangdong Provincial Key Laboratory of Bio-control for the Forest Disease and Pest， Guangzhou, Guangdong 510520, China; 2. Guangdong Academy of Forestry, Guangzhou, Guangdong 510520, China
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| Abstract: |
| Five-dominant-tree method was used for selecting superior trees of Pinus elliottii and P. caribaea on the basis of biomass and productivity traits which includeed tree height, DBH and individual stem volume, and form traits including stem form, crown-width and bark thickness. A selection criterion was established for both 40 years old P.elliottii and 13-40 years old P. caribaea plantation. The height, DBH, and individual stem volume of 40-year-old superior trees of P. elliottii, straight trunk, were higher than five-dominant-trees, which was 1%, 15% and 35% respectively. Ten superior trees were screened out of the 23 candidate trees with a selection ratio of 4348%.The height, DBH, and individual stem volume of 13—40 years old superior trees of P. caribaea, straight trunk, were higher than five-dominant-trees, which was 8%-12%, 15%-22% and 49%-70% respectively. 77 superior tree were screened out of the 160 candidate trees with a selection ratio of 4919%. The superior tree selection criterion was established in accordance with the stand characteristics. The biomass and productivity was regarded as the principal factor for superior tree selection which could enrich the genetic diversity of breeding population |
| Key words: P. elliottii P. caribaea plantation superior trees superior trees selected criterion |
