| 柳树苗期年生长模型的研究 |
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| 引用本文： | 杨斌.柳树苗期年生长模型的研究[J].西北林学院学报,2006,21(6):97-99,129. |
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| 作者姓名： | 杨斌 |
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| 作者单位： | 甘肃省林业科学技术推广总站,甘肃,兰州,730046 |
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| 基金项目： | 甘肃省林业厅科研项目“柳树新品种丰产栽培技术研究示范”(2002001) |
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| 摘 要： | 利用Log istic方程对柳树1a生扦插苗的苗高、地径年生长节律进行拟合。结果表明,拟合效果显著,相关系数在0.90以上。并以此将柳树扦插苗的生长过程分为成活期、生长前期、速生期和生长后期4个时期。柳树幼苗的年生长量表现出明显的“慢-快-慢”节律,速生期内的苗高生长量占总生长量的60.5%,地径生长量占总生长量的64.0%。
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| 关 键 词： | 柳树 苗期 Logistic方程 生长模型 |
| 文章编号： | 1001-7461（2006）06-0097-03 |
| 收稿时间： | 2006-03-24 |
| 修稿时间： | 2006-03-242006-05-21 |
Studies on Annual Growth Model of Willow at Seeding Stage |
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| YANG Bin.Studies on Annual Growth Model of Willow at Seeding Stage[J].Journal of Northwest Forestry University,2006,21(6):97-99,129. |
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| Authors: | YANG Bin |
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| Institution: | Forestry Scientific Technology Extension Station of Gansu ,Lanzhou,Gansu 730046,China |
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| Abstract: | Logistic equation is applied to model growth rate of willow at nursery stage.The results showed that the fitting effect was significant and the correlation coefficients were more than 0.90.Based on the equation,annual growth of the willow cuttage seedlings could be divided into four periods,namely survival period,pre-growth period,fast-growth period and post-growth period.Average height and ground diameter in fast-growth period is 60.5% and 64.0% respectively of the total annual growth output.Analyzed annual growth rate of seedlings would provided the theovotical basis for strengthening productive management of willow seedling and enhancing seeding quality and land productivity. |
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| Keywords: | willow seedling stage Logistic equation growth model |
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