| 摘要: |
| 用7、10、11和16个月生的湿加松无性系扦插苗造林，对造林成活率及5年生时的保存率和生长量调查分析结果显示：湿加松的成活和保存率比湿地松略低，而生长量明显大于湿地松，说明湿加松生长优势明显有较大的推广价值；4种苗龄的湿加松无性系苗造林效果比较，10、11和16个月苗龄的湿加松苗造林后的成活率、保存率和生长量均显著优于7个月苗龄的湿加松苗。综合考虑育苗成本和造林效果，认为采用10或11个月苗龄的扦插苗造林效果好。 |
| 关键词: 湿加松 无性系 苗龄 成活率 保存率 生长量 |
| DOI： |
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| 基金项目:国家“十一五”科技支撑项目（2006BAD01A1405-2），广东省林业科技创新专项资金项目（2008KJCX005-01，2009KJCX007） |
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| Relationship between stand performances and ages of rooted cuttings of Slash Pine×Caribbean Pine |
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lifuming
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| Abstract: |
| One clonal test of Slash pine (Pinus elliottii var. elliottii)×Caribbean pine (P. caribaea var. hondurensis) was established at Taishan in 2002. There were 25 clones in the test. And each clone included 4 groups of rooted cuttings which were cultivated 7 months, 10 months, 11 months, and 16 months in the nursery, separately. The survival rate, preservation rate and growth performance of the cuttings planted after 5 years were analyzed．The results showed that the survival rate and preservation rate of Slash pine × Caribbean pine stand was slightly lower than the slash pine, and the growth of the former was significantly higher than the latter. It was suggested that the Slash pine × Caribbean pine could be planted widely．Based on the survival rate, preservation rate, and the growth, 7-month-old rooted cuttings were significantly inferior to the others. According to the cost for raising cuttings and the performance of cuttings in the stand, cuttings cultivated 10 months or 11 months in the nursery were better for planting widely. |
| Key words: Slash pine ×Caribbean pine , clones, ages, survival rate, preservation rate, growth |
