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| 美国红橡木在粤北引种早期生长调查分析 |
| 梁东成,彭华贵,黄春华,杨昌腾,连辉明,何立平,何波祥,曾令海,蔡燕灵,张谦 |
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| (广东省天井山林场 广东乳源 广东省林科院 广州;广东省林业科学研究院 广东广州) |
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| 摘要: |
| 为了探明南方红橡木（Quercus falcata）、北方红橡木（Q. rubra）和杂种橡（Q. hybrid）3个美国栎属树种在广东省的适应性，开展了苗期生长调查，并在广东省乳源天井山林场进行了引种试验。结果表明，3个树种间的苗高与地径差异显著，平均苗高为9.6～24.4 cm，变异系数为21.83%～36.89%，平均地径为0.31～0.41 cm，变异系数为20.08%～25.33%。引种1 a时的成活率超过71％，补植后的成活率超过90％。3个树种平均树高为32.6～34.1 cm，变异系数为37.94%～45.65%，平均地径为0.38～0.45 cm，变异系数为35.37%～45.85%，树种间的地径存在极显著差异。表明3个树种均能适应粤北山地气候与环境条件，但个体的分化较大。 |
| 关键词: 红橡木 引种 生长性状；早期调查；变异系数 |
| DOI： |
| 投稿时间：2013-07-03修订日期：2013-07-09 |
| 基金项目:国家林业局“948”项目（2009-4-01）；广东省林业科技计划项目（2011-03）；广东省科技计划农业攻关项目（2010B020303004） |
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| Early Growth Performance of American Red Oak in North Guangdong |
| Liang Dongcheng,Pen Huagui,Huang Cunhua,Yang Changteng,Lian Huiming,He Liping,He BOxiang,Zeng LInghai,Cai Yanling,Zhang Qian |
| (Guangdong Academy of Forestry) |
| Abstract: |
| To reveal the adaptability of three species of American red oaks (Quercus falcata, Q. rubra and Q. hybrid) in Guangdong province, an investigation of seedlings′ growth performance and an introduction trial at Tianjinshan Forest Farm were conducted. The seedlings displayed significant interspecific variations in height and ground diameter. The average height ranged from 9.6 to 24.4 cm with additive coefficients of variation (CV) from 21.83% to 36.89%, and the average ground diameter was from 0.31 to 0.41 cm with CV from 26.08% to 25.33%. The survival rate was over 71% for 1year old seedlings growing in testing site and increased to more than 90% after a replanting program. Dramatic interspecific variations were observed on seedlings′ growth traits. The average height was from 32.6 to 34.1 cm with CV from 37.94% to 45.65%, and the average ground diameter ranged from 0.38 to 0.45 cm with CV from 35.37% to 45.85%. These results strongly suggested that three species of red oaks were highly adaptive to mountainous climate and environment in the North of Guangdong province and that there were obvious intraspecific variations in growth performance. |
| Key words: red oak introduction growth traits early investigation additive coefficients of variation |