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根据广西光皮桦(Betula luminifera)10个无性系在湖南安化县4年的引种试验表明,广西河池种源的光皮桦能较好地适应引种区域的立地条件与气候,同时对比引种地实生苗有显著优势,前5个优良无性系对比引种地实生苗材积增益分别达52.9%~147.1%。鉴于光皮桦树种生长的长周期性与极端气候的影响,引种效果还有待进一步观测。不同无性系生长差异显著,无性系在推广利用前必须开展测定评价。光皮桦无性系引种的初步成功,能为我国木材基地的建设提供更多的树种选择与技术支撑。
According to the introduction test of 10 clones of Betula luminifera in Anhua County of Hunan Province for 4 years, it showed that the light birch of Guangxi Hechi Provenance could adapt well to the site conditions and climate in the introduced area, Seedlings have significant advantages, the first five clones compared to the introduction of seedling biomass gain of 52.9% to 147.1%. In view of the long-bark growth of birch bark species and the impact of extreme climate, the introduction effect needs to be further observed. Differences in clonal growth of different clones in the promotion of the use of the determination must be carried out before evaluation. The initial success of the introduction of the light birch clones can provide more tree species selection and technical support for the construction of China’s timber base.