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| 云锦杜鹃等3种野生杜鹃花属植物在广东天井山苗期生长特性研究* |
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李芳华,苏正荣,梁东成,彭华贵,刘志发,孔祥楠,黄春华,王伟
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广东省天井山林场,广东省天井山林场,广东省天井山林场,广东省天井山林场,广东省天井山林场,广东省天井山林场,广东省天井山林场,广州市林业和园林科学研究院
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| 摘要: |
| 对云锦杜鹃（Rhododendron fortunei）、毛棉杜鹃（R. moulmainense） 和刺毛杜鹃（R.
championae）3 种野生杜鹃花属植物在广东天井山林场的生长特性包括种子发芽、幼苗形态建成及苗木生
长节律进行大田观测，结果表明：云锦杜鹃、毛棉杜鹃和刺毛杜鹃种子成熟度较好，平均发芽率分别为
77.83%、65.83%、83.34%，可以用种子进行苗木繁殖；幼苗形态建成较为缓慢需80 ～ 95 d，为播种繁殖
的关键期。3 种植物生长期约为10 个月，高生长集中在3 月下旬至9 月中旬，9 月中旬至11 月下旬进入
缓慢生长期，12 月下旬基本停止生长进入休眠期。刺毛杜鹃在12 月下旬是否完全进入休眠期有待进一步
研究。 |
| 关键词: 杜鹃花属 苗木 生长特性 生长节律 |
| DOI： |
| 分类号:S685.21 |
| 基金项目:1、广东省林业厅科技创新项目“天井山野生杜鹃选育和栽培技术研究与应用”(2012KJCX117-01)。2、广东省科技基础条件建设项目“广东杜鹃花属植物资源收集和开发利用研究”（2013B060400002)。 |
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| Growth Characteristics Study on Three Rhododendrons Species in Tianjingshan Region in Guangdong Province |
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Li Fang-Hua,SU Zhengrong,LIANG Dongcheng,PENG Huagui,LIU Zhifua,KONG Xiangnan,HUANG Chunhua and WANG Wei
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Tianjingshan Forest Farm of Guangdong Province,Tianjingshan Forest Farm of Guangdong Province,Tianjingshan Forest Farm of Guangdong Province,Tianjingshan Forest Farm of Guangdong Province,Tianjingshan Forest Farm of Guangdong Province,Tianjingshan Forest Farm of Guangdong Province,Guangzhou Institute of Forestry and Landscape Architecture
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| Abstract: |
| The seed germination, seedling morphogenesis and plant growth rhythm of three wild
Rhododendron species, Rhododendron fortunei, R. moulmainense and R. championae, were observed under the
condition of field observation on Tianjingshan forest farm in Guangdong province. The results showed that the
maturity of three wild plants of Rhododendron seeds were better and the average germination rate of R. fortunei,
R. championae and R. moulmainense were 77.83%, 65.83% and 83.34% respectively, which were feasible to be
used as seeds breeding. The seedling morphogenesis was relatively slow and would take 80 to 95 days, which
was the critical period for sowing and breeding. The growth period of seedlings of three species was ten months,
and the height-growth mainly concentrated on late March of middle September. In middle September to late
November, there was a slow-growing stage. They nearly stop growing and get into a dormancy period in late
December. However there need further research to make out that whether the seedlings of R. moulmainense
become dormant in late December.
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| Key words: Rhododendron seedlings growth characteristic growth rhythm |
