【摘要】 应用大样本调查方法和正态分布标准差分类法对钟萼木的当年生苗木高与地径生长量的不同生长类型进行分类,结果表明苗木群体高与地径生长划分为8个不同生长类型,群体表现明显的早期生长分化,群体平均值与相邻两区间生长类型个体权重占整体的85%以上,生长较好与较差的生长类型两极分化所占比例较小;不同生长类型分类较好地表明群体生长性状多样性组成和物种潜在生长优势,可为优良生长类型筛选提供依据.对不同生长类型个体适应性研究表明,该树种生长类型差的个体高生长期较短,优良生长类型个体有更长的高生长期,但地径生长期基本是一致的,主要受高生长期与光合作用率影响,说明遗传品质对苗高与地径生长影响显著.更多还原

【Abstract】 The growth of the height and calliper of seedling of Bretschneidera sinensis Hems1.was classified into 8 types by using the large samples method and the standard deviation classification method of Gaussian distribution in this paper.The results indicated that the differentiation of seedling colony was remarkable in early stage and the height of growth types of average value and adjacent interval was over 85% and the polarization ratio of the fine and sick growth types was fewer in total and it will provide theory for selecting the excellent growth-type through that the diversity constitute of growth character and the potential dominant growth-type were disclosed through the classification of the differentgrowth-type.The adaptability growth of the different growth-types was studied and it indicated that growth period of excellent growth-type compared with the inferior growth-type is longer,but growth period of calliper of the different growth-type was essentially the same and the calliper-growth was influenced by the height growth and photosynthesis.It indicated that the growth of height and calliper of the seedling of Bretschneidera sinensis Hems1.will be obviously influenced by genetic quality.更多还原