广西黄冕林场黑荆树不同家系造林试验初报

Preliminary Study on Afforestation Experiment of Different Acacia mearnsii Families in Huangmian Forest Farm, Guangxi Province

对黑荆树48个家系的造林试验结果表明,不同种源、家系大叶栎林木的生长差异显著,由此根据林木速生、单宁产量两方面综合初步选择出11个优良家系。所评选出优良家系其幼林3.5年生时林木的生长量与最差家系相比,其黑荆树林木的平均树高增加9.39%～21.01%,平均胸径增加13.51%～24.18%,单株材积增加35.70%～67.08%。树皮气干重量增加37.53%～68.11%,单宁产量增加63.83%～108.00%;与其他未选中的33个家系的平均数相比较,平均树高增加0.14%～11.39%,平均胸径增加4.59%～14.42%,单株材积增加15.35%～42.04%。树皮气干重量增加12.61%～37.66%,单宁产量增加13.53%～50.72%。

Afforestation experiments of 48 families of Acacia mearnsii were studied.The results showed that,the differences of growth were different significantly between the different provenances and families.11 superior families were selected according to fast-growing timer and tannin production.Compared with the worst family,the average height,average DBH,individual volume,air-dry weight of dark and tannin production of superior families in 3.5 years old increased 9.39%～21.01%,13.51%～24.18%,35.70%～67.08%,37.53% ～68.11% and 63.83% ～108.00%,respectively.Compared with the average value of 33 unselected families,the average height,average DBH,individual volume,air-dry weight of dark and tannin production of superior families in 3.5 years old increased 0.14% ～11.39%,4.59%～14.42%,15.35%～42.04%,12.61%～37.66%% and 13.53%～50.72%,respectively.