| 石梓生长规律的研究 |
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| 引用本文： | 李炎香,魏素梅.石梓生长规律的研究[J].林业科学研究,1989,2(4):344-350. |
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| 作者姓名： | 李炎香 魏素梅 |
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| 作者单位： | 中国林业科学研究院热带林业研究所
(李炎香)，中国林业科学研究院热带林业研究所(魏素梅) |
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| 摘 要： | 研究证明:石梓天然林树高和直径生长有两个速生期,第一个在第10年左右,第二个在第40—50年。材积生长量则一直在上升,其生长旺盛期可延长50—60年;人工播种的苗木高、径生长在播种后第3个月出现高峰,随即下降。苗高生长峰期在第2—5(6)个月,其生长量占苗高总生长量的79—90％。苗径生长峰期有两个,主峰期在第2—4(5)个月,次峰期在第6(7)个月,两次峰期的生长量占苗径总生长量的72—80％,11年生人工幼林,树高生长高峰在第2年,胸径生长高峰在第4年,材积生长高峰在第7年。但树高在第8年后生长缓慢,胸径和材积正处在生长旺盛期。
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| 关 键 词： | 石梓 生长规律 |
| 收稿时间： | 1988/7/20 0:00:00 |
THE GROWTH REGULATION OF GMELINA ARBOREA |
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| Li Yanxiang and Wei Sumei.THE GROWTH REGULATION OF GMELINA ARBOREA[J].Forest Research,1989,2(4):344-350. |
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| Authors: | Li Yanxiang and Wei Sumei |
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| Institution: | The Research Institute of Tropical Forestry CAF |
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| Abstract: | The result of the research shows that the Gmelina arborea has two fast-growing period on growth of tree height and diameter in natural forest, the first one appears in the tenth year and the other one appears in the fortieth-fiftieth year. The volume growth is still increasing and lasting to as long as fifty or sixty years old. If the sowing is in proper season, the growing peak of height and diameter of seedlings appear in the third month after sowing, but decreases immediately. The growing peak period of height appears in the second to fifth(sixth) month and it's increment is up to 79-90% of the total of one year. There are two growing peak period of seedling diameter growth, the principal one appears in the second to fourth(fifth) month and the secondary one in the seventh month after sowing, the increment of the two period is up to 72-80 % of the total; In the young plantation of eleven years old, the growing peak of tree height, diameter and volume appear respectively in the second, fourth and seventh year after planting, the speed of height growth decreases in the eighth year but the increments in diameter and volume are increasing rapidly in this period. |
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| Keywords: | Gmelina arborea growth regulation |
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