| 雷公藤扦插苗分级标准研究 |
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| 引用本文： | 林照授,涂育合,田有圳,谢丽延,郑巧莲,李金钎.雷公藤扦插苗分级标准研究[J].北华大学学报(自然科学版),2014,0(4):540-543. |
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| 作者姓名： | 林照授 涂育合 田有圳 谢丽延 郑巧莲 李金钎 |
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| 作者单位： | 林照授(大田桃源国有林场,福建 大田,366101)；涂育合(永安国有林场,福建 永安,366031)；田有圳(大田桃源国有林场,福建 大田,366101)；谢丽延(大田桃源国有林场,福建 大田,366101)；郑巧莲(永安国有林场,福建 永安,366031)；李金钎(大田桃源国有林场,福建 大田,366101)； |
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| 基金项目： | 福建省科技重大专项基金资助项目(项目编号：2006NZ0001A) |
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| 摘 要： | 采用随机抽样、主成分分析和逐步聚类分析等方法,探讨雷公藤扦插苗的苗木分级标准.提出以主枝长、地径和主根粗作为雷公藤苗木分级的质量指标,得出雷公藤苗木的3级分级标准：Ⅰ级苗：主枝长≥43.0 cm,地径≥4.22 mm,主根粗≥3.50 mm;Ⅱ级苗：43.0 cm〉主枝长≥26.5 cm,4.22 mm〉地径≥3.32 mm,3.50 mm〉主根粗≥3.13 mm;Ⅲ级苗：26.5 cm〉主枝长≥10.3 cm,3.32 mm〉地径≥2.45 mm,3.13 mm〉主根粗≥2.18 mm.
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| 关 键 词： | 雷公藤 扦插苗 苗木分级 逐步聚类 |
On Classification Standard of Tripterygium wilfordii Cutting Seedlings |
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| Institution: | Lin Zhaoshou, Tu Yuhe, Tian Youzhen, Xie Liyan, Zheng Qiaolian, Li Jinqian (1. Datian Taoyuan State Forest Farm in Fujian Province, Datian 366101, China; 2. Yongan State Forest Farm in Fujian Province, Yongan 366031, China) |
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| Abstract: | By using random sampling, principal component analysis and stepwise cluster analysis, classification standard of Tripterygium wilfordii cutting seedlings was studied. Considering seedling branch length, ground diameter and taproot crude as quality indexes of seedlings classification, three grade classification standards of Tripterygium wilfordii seedlings were as follows：gradeⅠ：branch length ≥43. 0 cm,ground diameter ≥4. 22 mm, taproot crude ≥3. 50 mm;gradeⅡ：43. 0 cm〉branch length ≥26. 5 cm,4. 22 mm〉ground diameter ≥3. 32 mm, 3. 50 mm〉taproot crude≥3. 13 mm;gradeⅢ：26. 5 cm〉branch length≥10. 3 cm,3. 32 mm〉ground diameter≥2. 45 mm,3. 13mm 〉taproot crude≥2. 18 mm. |
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| Keywords: | Tripterygium wilfordii cutting seedlings seedlings classification stepwise cluster |
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