樟子松的苗龄型与苗木质量的关系  

RELATIONSHIP BETWEEN SEEDLING QUALITY AND SEEDLING-AGE-TYPE OF SCOTS PINE

作　　者：许广岐 王凤霞[2] 李秋梅 

机构地区：[1]大兴安岭林业科学研究所 [2]东北林业大学

出　　处：《东北林业大学学报》1992年第3期20-25,共6页Journal of Northeast Forestry University

摘　　要：于1986—1989年在大兴安岭加格达奇苗圃对樟子松4种苗龄苗木(即1—1,2—0,2—1,1—2)采用完全随机区组设计的田间育苗试验方法,进行了对比育苗试验。试验结果表明:(1)4种苗龄苗木生长节律基本相同。当旬平均气温回升到14.5℃时,各苗龄苗木的高生长同时达到高峰期。(2)在2年苗龄组中,1—1苗龄苗木的根体积大于2—0苗龄苗木的15.6％,而苗高、地径、苗木鲜重、干重均小于2—0苗龄苗木,在3年苗龄组中,1—2苗龄苗木的上述各项调查因子均大于2—1苗龄苗木。(3)樟子松各苗龄苗木的苗高、地径分别与该苗龄苗木的鲜重、干重、根体积等调查因子呈y=A+Bx线性相关,而且,地径与之相关更为密切。(4)确定了1—2苗龄苗木的分级标准。Comparison experiments on seedling nursing of scots pine (Pinus sylvestris Var. mongolica) were carried out with 4 seedling-age-types (including S^(1-1), S_(2-0), S_(2-1), and S_(1-2) in Jiagedaqi Nursery of tree from 1986 to 1989 by taking the method as follows: (1) The growth rhythm of the 4 seedling-age-types are the same. When the mean air temperature of ten days gets up to reach at the peak. (2) Among 2-year-old seedlings, the volume of root of the S_(1-1) is 15.6％ more than that of the S(2-0), but characters such as the height, diameter, fresh weight and dry weight of S_(1-1) are lower than that of the S_(2-0); Factors given above of S_(1-2) are all higher than that of S_(2-1) among 3-year-old seedlings. (3) The Height and diameter of seedlings of different age-types have linear correlation with factors such as fresh weight, dry weight and the volume of roots, and the diameter is more obvious. (4) The Classification standard of S_(1-2) seedings is presented.

关 键 词：樟子松 苗木质量 苗龄型 

分 类 号：S791.253[农业科学—林木遗传育种]