日本落叶松优良家系和无性系初步研究

Primary Research on Fine Family and Clone of Larix Kaempferi

摘要:

摘要：为了探讨日本落叶松不同优良家系和无性系幼龄林的生长表现，本文以4年（苗龄2年生）优良家系和无性系试验林为研究对象，通过生长量调查和统计分析后，结果表明：日本落叶松优良家系和无性系成活率高，保存良好，成活率和保存率均值达到了89%和81%；日本落叶松优良家系2009SBZ11、2009SBZ20和优良无性系2009SBY1、2009SBY25生长最快，且差异显著。2009SBZ11、2009SBZ20家系立木单株平均树高较最低值75.1 cm（2009SBZ6、2009SBZ34）增长了近19.0%和18.9%；2009SBY1和2009SBY25无性系立木单株平均树高较最低值74.6 cm（2009SBY6）增长了近23.6%和24.9%。

Abstract:

Abstracts:In order to find the growth difference among young forest of superior families and clones of Larix Kaempferi, Investigation and statistical analysis on the growth increment of the four year old superior family and clone, the seedling age of which were 2-years-old were conducted. The result showed that Larix Kaempferi superior families and clones had high survival rate and preserving rate, which reached 89% and 81% respectively; In addition, the superior families 2009SBZ11, 2009SBZ20 and superior clones 2009SBY1, 2009SBY25 were the best; they grew most rapidly and the difference reached significant level. The mean single plant height of superior families 2009SBZ11 and 2009SBZ20 were 19.0% and 18.9% respectively higher than the minimum 75.1 cm(2009SBZ6、2009SBZ34); While the superior clones 2009SBY1 and 2009SBY25 were 23.6% and 24.9% respectively higher than the minimum 74.6 cm (2009SBY6).