| 铁力木苗木分级研究 |
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| 引用本文： | 杨斌,周凤林,史富强,徐玉梅,李玉媛.铁力木苗木分级研究[J].西北林学院学报,2006,21(1):85-89. |
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| 作者姓名： | 杨斌 周凤林 史富强 徐玉梅 李玉媛 |
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| 作者单位： | 云南省林业科学院,云南,昆明,650204 |
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| 摘 要： | 采用逐步聚类分析方法,对铁力木容器苗苗木的分级标准进行了探讨。提出了以苗高和地径作为该树种苗木分级的质量指标,并得出铁力木苗木的3级分级标准,即:Ⅰ级苗:树高≥19.4cm,地径≥0.25 cm、Ⅱ级苗:19.4 cm>树高≥12.3 cm,0.25 cm>地径≥0.16 cm、Ⅲ级苗:树高<12.3 cm,地径<0.16 cm。
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| 关 键 词： | 铁力木 苗木分级 逐步聚类 |
| 文章编号： | 1001-7461（2006）01-0085-05 |
| 收稿时间： | 2005-05-21 |
| 修稿时间： | 2005-07-26 |
A Study of Seedling Grading of Mesua ferrea L. |
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| YANG Bin,ZHOU Feng-lin,SHI Fu-qiang,XU Yu-mei,LI Yu-yuan.A Study of Seedling Grading of Mesua ferrea L.[J].Journal of Northwest Forestry University,2006,21(1):85-89. |
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| Authors: | YANG Bin ZHOU Feng-lin SHI Fu-qiang XU Yu-mei LI Yu-yuan |
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| Institution: | Yunnan Academy of Forestry, Kunming Yunnan 650204,China |
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| Abstract: | The standard of seedling grading of Mesua ferrea L.was studied by using the methods of gradual cluster analysis.Seedling height and basal diameter were proposed as the main indexes of quality for seedling grading of this species.The following standards were produced for seedlings of the first to the third grades.The seedlings with the height of 19.4cm or above,basal diameter of 0.25cm or above were classified as grade one,those with height lower than 19.4cm but higher than or equal to 12.3cm,basal diameter lower than 0.25cm but higher than or equal to 0.16cm were classified as grade two,those with height lower than 12.3cm and basal diameter lower than 0.16cm were classified as grade three. |
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| Keywords: | Mesua ferrea L seedling grading gradual cluster analysis |
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