摘要
本文采用有序样本分类方法，以马尾松球果的果径为分级指标，球果使用价值为分类依据，将马尾松球果分为四级．这种分类结果反映出不同等级球果的使用价值．
By sequential
sample classifiction based on cone diameter and practice convenience, cones of masson pine
(Pinus massoniana) were ranked into four grades which reflect the value of different cone grades
of masson pine
出处
《福建林学院学报》
CSCD
1999年第2期178-180,共3页
Journal of Fujian College of Forestry
