| 不同密度2 代连栽马尾松人工林生产力水平比较 |
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| 引用本文： | 温佐吾. 不同密度2 代连栽马尾松人工林生产力水平比较[J]. 浙江农林大学学报, 2004, 21(1): 22-27 |
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| 作者姓名： | 温佐吾 |
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| 作者单位： | 1.贵州大学林学院, 贵州贵阳550025 |
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| 基金项目： | 九五 国家科技攻关资助项目(96-011-01-01) |
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| 摘 要： | 利用贵州省龙里林场哨上工区同一造林地上前后2 次马尾松Pinus massoniana 密度试验林11 年生和17 年生长情况的调查测定资料, 进行2 代连栽马尾松人工林生产力水平以及土壤养分状况的比较分析。结果表明, 在立地指数16m 左右, 立地质量中等的造林地, 以3 种不同密度连续栽培的2 代马尾松人工林, 第2 代林分的平均树高和优势水平均高, 均接近或超过第1 代林分。所分析的几个土壤养分指标大多数项目均是第2 代林分高于第1 代林分, 基本上未出现生产力水平下降和地力衰退现象。因此, 试验研究地区立地指数在16 m左右的造林地, 第1 代马尾松人工林采伐后, 可以再次营造第2 代马尾松人工林。表3 参15
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| 关 键 词： | 森林经理学 马尾松 造林密度 2 代连栽 生产力 |
| 收稿时间： | 2003-07-03 |
Comparison of productivity between first and second rotation stands of Pinus massoniana planted in different densities |
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| WEN Zuo-wu. Comparison of productivity between first and second rotation stands of Pinus massoniana planted in different densities[J]. Journal of Zhejiang A&F University, 2004, 21(1): 22-27 |
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| Authors: | WEN Zuo-wu |
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| Affiliation: | 1.College of Forestry , Guizhou University , Guiyang 550025, Guizhou , China |
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| Abstract: | The experimental planting density plantations in two rotations of Pinus massoniana are studied at the same site of the Longli Forest Farm of Cuizhou Province .According to the data of 11-year and 17-year Pinus massoniana collected from the experimental plantations , productivity of the plantation and soil nutrient in first and second rotations are compared .The results show that in the plantation with the site index of 16 m and medium site quality , the mean height and dominant height of second rotation plantations approaches or exceeds all those of first rotation stands .Most analyzed soil nutrient factors of second rotation plantations are higher than those of first rotation plantations , and general decline in productivity and soil degradation of second rotation stands are not found .So the second rotation plantation can be established at the sites where site index is around 16 m after the first rotation plantation of Pinus massoniana are felled .[ Ch , 3 tab .15 ref.] |
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