不同种源红榉苗期生长节律的研究  

Study on growth rhythm of different Zelkova schneideriana provenances at seedling stage

作　　者：王旭军[1,2] 张日清[3] 许忠坤[2] 程勇[2] 吴际友[2] 周建雄 

机构地区：[1]中国林业科学研究院林业研究所国家林业局林木培育重点实验室,北京100091 [2]湖南省林业科学院,湖南长沙410004 [3]中南林业科技大学,湖南长沙410004 [4]攸县黄丰桥林场,湖南攸县412307

出　　处：《中南林业科技大学学报》2013年第7期31-34,共4页Journal of Central South University of Forestry & Technology

基　　金：国家林业公益性行业科研专项(200904011);国家"十二五"科技支撑计划(2011BAD38B03)

摘　　要：以红榉5个不同种源为研究对象,对其苗期生长量进行测定;采用Logistic方程拟合其苗高和地径生长规律,建立生长模型,并根据拟合曲线的相关系数求相应种源的苗期物候和生长参数。进行比较分析。结果表明:(1)红榉苗期苗高和地径生长为全期生长类型,且符合"S"型曲线,并能用Logistic生长方程对其动态生长节律很好的拟合;(2)红榉种源幼苗苗高、地径的物候期参数和生长参数均存在比较明显的差异,各种源间线性生长量占总生长量百分率为54.60%～66.55%。By taking five provenances of Zelkova schneideriana Hand-Mazz.as the studied materials,the seedling stage growth were measured.The growth laws of seedling height and basal diameter were fitted by Logistic equation,and the mathematical models for their growth were established.Based on the related coefficient of stimulant curves,the phonological period and growth parameters were calculated,compared and analyzed.The results show that（1） The growth rhythm of the seedling height and basal diameter belonged to full-time growth type,and matched perfectly with ＂S＂ curve,and could be well fitted by Logistic Growth Equation at significant level;（2） Compared with different provenances,there existed significant differences among phenophase parameters and growth parameters of height and basal diameter,and the percentages of each provenance linear growth accounted for 54.60% to 66.55% of total increment.

关 键 词：红榉 种源 苗期 生长节律 生长模型 

分 类 号：S792.19[农业科学—林木遗传育种]