摘要
欧洲白桦14个种源、51个个体苗期生长观测结果表明:生长高峰集中在7月中旬至8月上旬,平均累计生长律为50.7%;具有较强的适应性,苗期无冻害和病虫害发生。对不同种源和个体的苗高、地径进行方差分析,结果表明:各个体间的苗高、地径差异均极显著,经LSR检验,初步选择出欧试9、欧试5、欧试8为欧洲白桦优良种源,O-57、O-19、O-31、O-61、O-35、O-78、O-44为欧洲白桦优良个体,O-83为最佳个体。欧洲白桦的生长表现优于白桦。
Betula pendula has a stronger adaptability to the environment, so that no freezing damage, any disease and insect appeared at its seedling stage. The growth analysis of 14 provenances and 51 individuals at seedling period indicates that the growing peak period concentrates in mid - July to the first ten days of the August, the average total amount growth rate is 50.7%. The results of variance analysis to different provenances and different individuals are as follows： there are very significant differences among every individual in seedling height and basal diameter. The LSR test shows that the superior provenances are B. pendula 9 B. pendula 5 and B. pendula 8 ; and 0- 57, 0- 19, 0 - 31, 0 - 61,0 - 35, 0 - 78, 0 - 44 are the superior individuals, the best is 0 - 83 of Betula pendula.
出处
《吉林林业科技》
2007年第2期12-16,共5页
Journal of Jilin Forestry Science and Technology
关键词
欧洲白桦
种源
个体
Betula pendula
provenance
individual
