几种落叶松在鄂西生长比较研究  

Comparative Study on Growth of Different Larch Species in West Hubei

作　　者：管兰华[1] 曹健[1] 祁万宜 织田春纪[1] 中山诚宪[1] 河野耕藏[1] 

机构地区：[1]中日合作湖北省林木育种中心,湖北武汉430079 [2]湖北省宜昌市林业科学研究所,湖北宜昌443111

出　　处：《林业科技》2005年第1期14-17,共4页Forestry Science & Technology

摘　　要：对日本落叶松、华北落叶松、长白落叶松 5年生、 10年生和 2 4年生 3个年份的生长数据进行比较的结果表明 ,树高和胸径在树种之间的差异都十分显著 ,树种占胸径和树高变异因素的 80 %以上。种源之间除 10年生时 ,种源之间无显著差异外 ,在第 5年生和 2 4年生时都存在极显著的差异 ,但是种源占胸径和树高变异的比例非常小 ,说明通过生长性状进行适生树种和优良种源的选择是非常重要的。胸径和树高这两个指标在树龄和树种之间都有显著的交互作用 ,随着树龄的增加树种之间的生长差越来越大 ,2 4年生时 ,日本落叶松的胸径和树高的生长分别是其他落叶松的 2 0 7和 1 86倍。日本落叶松树高和胸径这两个指标 3个年份之间的遗传相关系数都非常高 ,接近 1 0 ,因此开展日本落叶松的早期选择是可行的。The growth of four larch species,namely,Japanese larch,Prince Rupprecht′s larch,Korean larch and Chinese larch were compared based on the 5th year′,10th year′ and 24th year′ performance.There were significant differences among these species in DBH and height.The estimated variance of inter-species component accounted for about 80% of the growth variation,while provenances accounted for only a little amount.Except the 10th year′ performance,the between-provenances component in four species were significant in the 5th year and 24th year.So it was very important to select superior species and provenance from well-performed species in growth traits.There was significant interaction between year and growth traits,and the variation among different species of growth traits became more significant year after year. The DBH and height of Japanese larch were 2 07 and 1 86 times larger than those of the other larch species in the 24th year′ performance. The genetic correlation coefficients of DBH and height among 3 data sets of performances were as high as 1 0 in Japanese larch,so the early selection would be possible in the species.

关 键 词：树高 胸径 日本落叶松 树种 生长比较 种源 树龄 指标 增加 差异 

分 类 号：S791[农业科学—林木遗传育种] S792[农业科学—林学]