鄂西北秃杉引种栽培试验研究

秃杉引种栽培试验表明,秃杉在鄂西北地区具有生长快、适应性强、病虫害少等特点, 在同一立地条件下秃杉平均高生长量比杉木高36．2％,平均胸径比杉木高71．0％,为优良珍贵的速生用材树种和园林观赏树种。秃杉种源试验结果表明:种内存在遗传变异,生长量与经度、纬度呈负相关,低纬度的云南林科院种源,材积生长高于种源平均材积生长量32．1％。

Study on Test of Introduction Cultivation for Tawania Flousiana Gausssen in Northwest Hubei

The test of introduction cultivation for Tawania Flousiana Gausssen showed that Tawania Flousiana Gausssen has characters of fast growing, strong adapatability and less diseases and pest in region of northwest Hubei, and average height increment was 36.2% and average DBH was 71.0% higher than Chinese fir as excellent and rare tree species of fast growing timber and ornamental species under the same site condition. The result of Tawania Flousiana Gausssen provenance test indicated that it existed genetic variation inside species ; the increment has negative relations with longitude and altitude, low altitude provenance of Yunan Academy of Forestry and volume growth were 32.1% higher than average provenance volume increment.