摘要
从13个不同种源在热带山区生长表现看，不同种源径、高、材积和干形等都有显著差异。综合评价，凭祥种源生长表现最好，其径、高、材积生长量比其它种源高0．8％％～38．9％，干形比其它种源多12．6％～30．5％；其次是屏边种源，生长量比其它种源高1％～107．2％。
Growth of 13 provenances of Betula alnoides in tropical mountainous areas was observed and it was found that tree height, volume, and form were significantly different among provenances. The local provenance, i.e. Pingxiang provenance, displayed the best growth performance, 0.8% %～38.9 % higher than other provenances in DBH, height and volume, 12.6 % %～30.5 % more in tree form. Pingbian provenance took the second place that its increment was 1% %～ 107.2 % higher than other provenances.
出处
《广西林业科学》
2010年第1期21-24,共4页
Guangxi Forestry Science
关键词
西南桦
种源选择
Betula alnoides
provenances selection
