蓑衣油杉和云南油杉的幼苗生长特征
1. 大理州林业和草原科学研究所, 云南大理 671000
2. 昆明滇池国家级风景名胜区西山景区服务中心, 云南昆明 650111
3. 西南林业大学, 林学院, 云南昆明 650224
| 摘 要： | 云南油杉（Keteleeria evelyniana）及其变种蓑衣油杉（K. evelyniana var. pendula）的种子与其他松科（Pinaceae）油杉属（Keteleeria）植物一样具有发达的种翅，且富含油脂，极易丧失生活力，不耐贮藏。本研究通过调查分析两种油杉实生幼苗2年内株高、叶片数、叶长和分枝数等指标，探讨其幼苗生长特征，为其种群扩繁、保护和开发等研究提供依据。结果表明，在幼苗第一年，蓑衣油杉长势稍优于云南油杉；第二年，云南油杉幼苗长势明显优于蓑衣油杉。蓑衣油杉和云南油杉幼苗的株高和叶片数的生长量均在次年6-9月期间达到最高值，而在11月至次年4月冬春旱季时则处于生长缓慢期强。两种油杉的株高、叶片数和叶长间基本呈正相关。气候变化尤其是温度和降水量对蓑衣油杉和云南油杉的幼苗生长有着明显的影响。 |
| 关 键 词： | 蓑衣油杉; 云南油杉; 幼苗; 生长特性 |
| DOI： | 10.57237/j.jaf.2024.01.001 |
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收稿日期: 2023-12-28
接受日期: 2024-02-02
在线出版日期: 2024-02-04
The Growth Characteristics of Young Seedlings of Keteleeria evelyniana var. evelyniana and K. evelyniana var. pendula
1. Dali Forestry and Grassland Science Research Institute, Dali 671000, China
2. Xishan Scenic Spot Service Center of Kunming Dianchi State-leveled Scenic Area, Kunming 650111, China
3. Shenzhen Water Engineering Quality and Safety Supervision Station, Shenzhen 518000, China
4. Forestry Faculty, Southwest Forestry University, Kunming 650224, China
| Abstract: | Like other species of the genus Keteleeria (Pinaceae), the seeds of Keteleeria evelyniana and its variety K. evelyniana var. pendula have developed seed wings, and both are rich in oil and prone to loss of vitality. By investigating and analyzing the plant height, number of leaves, length of leaves, and number of branches of seedlings within 2 years of two Keteleeria varieties, this study explores their growth characteristics, providing a basis for many studies, such as population propagation, protection and development. The results showed that the growth of K. evelyniana var. pendula is slightly better than that of K. evelyniana var. evelyniana in the first year of the seedlings, while the growth of K. evelyniana var. evelyniana was significantly better than that of K. evelyniana var. pendula in the second year. The growth of plant height and leaf number of the seedlings of K. evelyniana var. evelyniana and K. evelyniana var. pendula reached their peaks between next June and September, while they were in a slow growth period during the winter and spring dry season from November to next April; There is a positive correlation between the plant height, number of leaves, and leaf length of two Keteleeria varieties. Climate change, especially the level of temperature and precipitation, has a significant impact on the growth of young seedlings of K. evelyniana var. evelyniana and K. evelyniana var. pendula. |
| Keywords: | Keteleeria evelyniana var. evelyniana; K. evelyniana var. pendula; Seedling; Growing Characteristics |
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