摘要
通过对5.3ha 油松母树林设标准地进行每木调查,对油松自然变异类型进行了初步划分。根据形质指标的差异制定划分标准,从变异最大的针叶长短、树皮开裂方式,以及其它性状标准,初步分为长针叶纵裂类型、长针叶片裂类型、短针叶纵裂类型和短针叶片裂类型。对各类型的生长量进行方差分析和 S 检验,结果表明,类型间差异极显著。其中,长针叶纵裂类型生长、结果、抗性方面表现最好,短针叶纵裂类型和短针叶片裂类型次之。最差的是长针叶片裂类型。
Through sample plot method on 5.3 ha Pinus tabulaeformis seed stands,a classification of P.tabulaeformis natural variant types has been carried out. The standards of the classification were made based on both tree form and quality in- dex.Taking the most variable index,length of needle and bark surface shape,as major standards with consideration of other charter variation,four variant types were tenta- tively classified,which were long—leaf and vertical furrow—shaped bark,long—leaf and seale—shaped bark,short—leaf and vertical furrow—shaped bark,and short—leaf and scale—shaped bark.Growth of each type was analysed through ANOVA and S— test.The result showed the types significantly differed from each other.Among them, the type with long—leaf and furrow—bark had the best performance in growth ,fruit- ing and resistance,which followed by short—leaf and furrow—bark type and short— leaf and scale—bark type.Long—leaf and scale—bark type was worst.
出处
《陕西林业科技》
北大核心
1993年第4期10-12,共3页
Shaanxi Forest Science and Technology
关键词
油松
自然类型
母树林
Pinus tabulae formis
Natural type
Seed stand
