| 泡桐苗期年生长参数的分析研究 |
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| 引用本文： | 傅大立,杨绍彬,丛培生,李宗然.泡桐苗期年生长参数的分析研究[J].林业科学研究,2001,14(3):301-306. |
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| 作者姓名： | 傅大立 杨绍彬 丛培生 李宗然 |
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| 作者单位： | 国家林业局泡桐研究开发中心, |
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| 基金项目： | 国家“九五”攻关子专题!“泡桐单板类人造板材林优良无性系选育技术研究”的部分内容 |
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| 摘 要： | 对位于河南省通许县试验点的16个泡桐无性系进行苗期测定的基础上，研究分析其苗期生长规律及生长参灵敏，结果表明，泡桐苗期年生长符合S型生长曲线，16个无性系185株苗木年生长进程平均为；地径生长速生始期为6月12日，此时生长速度为0.033cm.d^-1，生长量达1.08cm；7月16日达到全年最大生长速度(0.049cm.d^-1)，皮时生长量达2.57cm，8月20日生长量达到4.05cm。速生期6月12日至8月20日，持续69d，全年生长量5.l3cm。苗高速生始期晚于地径，为7月8日，此时生长速度为0.049m.d^-1，生长量达0.86m；7月27日达到最大生长速度（0.073m.d^-1)，此时生长量达到2.04m;8月15日生长量达到3.22m，速生期7月8日至8月15日，持续37d，全年生长量为4.09m，地径与苗高生长量均与各自的速生持续期及最大生长速度有极显著的正相关关系。
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| 关 键 词： | 泡桐 苗木 年生长参数 S型曲线 |
| 文章编号： | 1001-1498(2001)0301-06 |
| 收稿时间： | 2000/8/27 0:00:00 |
The Annual Growth Parameters and Their Variation of Paulownia Seedlings |
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| FU Da-li,YANG Shao-bin,CONG Pei-sheng and LI Zong-ran.The Annual Growth Parameters and Their Variation of Paulownia Seedlings[J].Forest Research,2001,14(3):301-306. |
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| Authors: | FU Da-li YANG Shao-bin CONG Pei-sheng and LI Zong-ran |
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| Institution: | Paulownia Research and Development Center of China, Zhengzhou 450003, Henan, China;Paulownia Research and Development Center of China, Zhengzhou 450003, Henan, China;Paulownia Research and Development Center of China, Zhengzhou 450003, Henan, China;Paulownia Research and Development Center of China, Zhengzhou 450003, Henan, China |
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| Abstract: | Based on testing 16 Paulownia clones in seedling stage, the growth pattern and growth parameters in seedling stage were studied. The results indicated that the growth of Paulownia seedlings can be modeled by sigmoid curve, and can be divided into 3 stages: first slow growth stage, fast growth stage and second slow growth stage. The main parameters are the beginning date of fast growth(DB), the middle date of fast growth(DM), the ending date of fast growth(DE), the length of fast growth(LG), the growth rate(RG) and increment at each date, the average growth rate(ARG), the maximum rate of growth(XRG), and the maximum value of diameter(KD) and height(KH) of annual growth of Paulownia seedlings. The annual growth parameters of diameter of 185 seedlings of 16 clones are as follows: DB June 12, RG 0.033 cm· d-1 , diameter 1.08 cm; DM July 16, XRG 0.049 cm·d-1 , diameter 2.57 cm; DE August 20, diameter 4.06 cm; LG 69 days, total annual growth 5.13 cm. The annual growth parameters of seedling height are: DB July 8, RG 0.049 m·d-1 , height 0.88 m; DM July 27, XRG 0.073 m· d-1 , seedling height 2.57 m; DE August 20, seedling height 3.22 cm; LG 37 days, total annual growth 4.09 m. The diameter and height of total annual growth are distinctively correlative with XRG respectively. |
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| Keywords: | Paulownia seedling annual growth sigmoid model |
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