| 李 娟1，谭文婧2，林建勇1，刘雄盛1，梁瑞龙1.闽楠不同种源苗期生长规律研究[J].广东农业科学,2017,44(11):44-52 |
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闽楠不同种源苗期生长规律研究 |
| Study on growth rhythms of different provenances of Phoebe bournei at seedling stage |
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| DOI：10.16768/j.issn.1004-874X.2017.11.008 |
| 中文关键词: 闽楠 种源 苗期 生长节律 生长模型 |
| 英文关键词: Phoebe bournei provenance seedling stage growth rhythm growth model |
| 基金项目:广西科技计划项目（桂科AB16380092）；广西林业科技项目（桂林科字[2015] 第2 号）；广西优良用
材林资源培育重点实验室自主课题（15-A-03-01） |
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| 中文摘要: |
| 对闽楠11 个种源一年生实生苗的生长规律进行研究，结果表明：11 个种源的苗高生长节律均
呈现出“慢- 快- 慢”的“S”型趋势，生长高峰期出现在5 月和9 月，个别种源的第2 次生长高峰期出现
在10 月；地径生长则并未表现出典型的“S”型生长规律，地径的2 次生长高峰期均比苗高晚1 个月；各
种源苗高、地径Logistic 方程拟合精度高。采用有序聚类分析法，结合苗木的生长特性，闽楠11 个种源苗高
和地径生长均可划分为出苗期、生长初期、速生期和生长后期4 个阶段。苗高速生期净生长量占全年生长
量的55% 以上，地径速生期净生长量占全年生长量的34%～48%。方差分析结果表明，11 个种源的苗高和
地径存在显著差异。对各种源的苗高和地径进行聚类分析，可分成3 类：第1 类为速生种源，包括广西富川
和广西资源；第2 类为中生种源，包括贵州从江、贵州思南、湖北来凤、湖南祁阳、湖南永顺、江西崇义、江
西井冈山、福建南平；第3 类为慢生种源，如湖南沅陵种源。 |
| 英文摘要: |
| The growth rhythms of annual seedlings of 11 provenances of Phoebe bournei were studied. Results
indicated that：the growth rhythm of height of all 11 provenances appeared as an“ S” trend of“ Slow-Fast-Slow”.
The seedling height reached its growth peak in May and September，while several provenances’ second growth peak
appeared in October. The growth of the ground diameter did not accord with the typical“ S” growth pattern；two
growth peaks of the ground diameter emerged one month later than that of the seedling height；high fitting precisions
were found in the Logistics equation for the growth of seedling height and ground diameter in all provenances.
Through the application of sequential cluster analysis in combination with the seedlings’ growth characteristics，the
growth of seedling height and ground diameter in 11 provenances could be divided into 4 stages，i.e.，emergence，
early growth，rapid growth and later growth. The net growth of seedling height in the rapid growth stage accounted
for more than 55% of the annual growth. The net growth of ground diameter in the rapid growth stage accounted for 34%-48% of the annual growth. The results from the analysis of variance suggested that the seedling height and the
ground diameter differed significantly among the 11 provenances. The 11 provenances were analyzed by hierarchical
clustering，then were divided into 3 groups. The first group was fast growth provenance，including those from
Fuchuan and Ziyuan in Guangxi Province；the second group was moderate growth provenances，including those from
Sinan and Congjiang in Guizhou Province，Laifeng in Hubei Province，Qiyang and Yongshun in Hunan Province，
Chongyi and Jinggang in Jiangxi Province，and Nanping in Fujian Province；the third group was from Yuanling in
Hunan Province，which was the provenance with slow growth. |
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