| 北抗1号杨苗期年高生长进程分析 |
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| 引用本文： | 杨成生,王芳,姜成英,张亚军.北抗1号杨苗期年高生长进程分析[J].甘肃林业科技,2005,31(3):4-6,31. |
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| 作者姓名： | 杨成生 王芳 姜成英 张亚军 |
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| 作者单位： | 甘肃省林业科学研究院,甘肃,兰州,730020 |
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| 摘 要： | 利用Logistic方程对北抗1号杨苗期年高生长节律进行拟合，建立了数学模型：H=223．1／1＋exp（3．34213-0．04392t）]，相关系数0．9923。并依此将整个生长过程分为前生长期、速生期、后生长期3个阶段，其中速生期（6月16日～8月16日，60d）苗高生长量占总生长量的57．76％。提高苗木质量，培育大苗壮苗应加强这一关键时期的田间管理。
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| 关 键 词： | 北抗1号杨 Logistic模型 速生期 |
| 文章编号： | 1006-0960（2005）03-0004-03 |
| 收稿时间： | 2005-07-05 |
| 修稿时间： | 2005-07-05 |
Analysis on Annual Growth Process of height in seedling stage of Populus del. CL. ‘Beikang-1’ |
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| YANG Cheng-sheng,WANG Fang,JIANG Cheng-ying,ZHANG Ya-jun.Analysis on Annual Growth Process of height in seedling stage of Populus del. CL. ‘Beikang-1’[J].Journal of Gansu Forestry Science and Technology,2005,31(3):4-6,31. |
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| Authors: | YANG Cheng-sheng WANG Fang JIANG Cheng-ying ZHANG Ya-jun |
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| Institution: | Ganu Forestry Science and Technology Research Academy, Lanzhou 730020, Gansu |
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| Abstract: | Through simulating growth law of height in seedling stage of Populus del. CL. 'Beikang-1' by Logistic equation, the mathematic model of H=223.1/1+exp(3.342 13-0.043 92t)] was established and the correlation coefficient is 0.992 3. Based on it, the whole growth process was divide into 3 stages of pre-growth stage, rapid growth stage and post-growth stage. Among them, the height growth increment of rapid growth stage (from 16, June to 16, August) accounts for 57.76% of total growth increment. The field management should strengthen in this key stage for improving the quality of seedling and cultivating big and robust seedling. |
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| Keywords: | Populus del CL 'Beikang-1' Logistic model rapid growth stage |
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