| 杉木种子园产量构成分析 |
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| 引用本文： | 管康林,管宇.杉木种子园产量构成分析[J].浙江农林大学学报,1997,14(3):213-219. |
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| 作者姓名： | 管康林 管宇 |
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| 作者单位： | 1.浙江林学院林学系, 临安 311300 |
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| 基金项目： | 浙江省科学技术委员会资助项目 |
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| 摘 要： | 以浙江横畈1. 5代杉木种子园为背景材料，对个体结实动态，群体结构与产量关系，球果经济性状和生态因素的影响进行了观察与分析。同时，概括出产量( P )的构成要素:即种植密度( d )、单株球果数( n )、果重( W )和出籽率( S )，并提出经验计算公式:P = d ( 100n W ) S 。1995年10年生杉木种子园获得种子243kg hm- 2 ，其群体结构是525株 hm- 2， 树冠郁闭度0. 6，单株结实量661. 9个，出籽率6. 2% 。
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| 关 键 词： | 杉木 种子园 林分密度 群体 球果 产量 |
| 收稿时间： | 1996-08-22 |
Analysis of Seed Yield Composition in Seed Orchard of Chinese Fir. |
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| Guan Kanglin,Guan Yu..Analysis of Seed Yield Composition in Seed Orchard of Chinese Fir.[J].Journal of Zhejiang A&F University,1997,14(3):213-219. |
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| Authors: | Guan Kanglin Guan Yu |
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| Affiliation: | 1.Zhejiang Forestry College, Lin’ an 311300, PRC |
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| Abstract: | Using the background materials of Chinese fir seed orchard at 1. 5 offspring in Hengfan Forest Farm, an observation was made on the dynamic of individual cone bearing number, the relationship between the colonial structure and the seed yield, cone economic traits and effect of ecological factors. The seed yield in the orchard was chiefly affected by planting density, cone number of each plant , cone weight and seed-extracting percentage. An experimental formula on seed yield was suggested. In 1995, the 10-year seed orchard obtained a seed yield of 243 kg hm- 2. A reasonable colonial structure of bumper harvest was established in existing density of 525 plants hm- 2, crown sensity of 0. 6, averag eset ting numbers of 661. 9 per plant and seed-extracting percentage of 6. 2%. |
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