摘要
对１９９１～１９９３年定位连续调查的资料作了统计分析表明，巨尾桉无性系林分树高、胸径、胸高断面积、材积连年生长量峰值分别出现在１，２，３，３年；平均生长量除材积约推迟１．３年，其它林木因子都在同一龄期达到高峰；４年生林分平均树高达１５．８ｍ，平均胸径１１．６ｃｍ（带皮），年平均蓄积生长量达３１．２９７９ｍ３／ｈｍ２。可见巨尾桉无性系林分生长快速，适宜于短轮伐期集约经营利用。
A detailed analysis of the data from the clonal plantation of Eucalyptus grandis×E.urophylla during the period from 1991 to 1993 indicated that the summits of annual growths in height,breast-basal area and volume turned up respectively in 1,2,3,3 years after planting.The summits of average annual increments were the same as annual ones except volume was 15 months later.The accretion of the plantation were 15. 8 m in height,11.6 cm in breast-height diameter in 4 years.The average annual volume growth was 31.2979 m3/hm2.The conclusion was that Eucalyptus grandis×E.urophylla was a suitable tree species for establishing short rotation plantation.
出处
《广东林业科技》
1996年第1期7-12,共6页
Forestry Science and Technology of Guangdong Province
关键词
巨尾桉
短轮伐期
无性系
林分生长
Eucalyptus grandis×E.urophylla,short rotation,clones,growth of plantation,spacing
