【摘要】 2006年在广西3个试验点对收集于广西、广东、湖南、福建及海南的9个大叶栎种源进行优良种源选择试验,结果表明:(1)种源间树高、胸径和材积生长均达极显著水平。(2)初步选出两个优良种源,即广西融水种源(ZY5)和广西苍梧种源(ZY7)。该两个优良种源与最差种源海南乐东种源(ZY6)比较,平均树高增加27.80%～29.47%,平均胸径增加29.97%～31.86%,单株材积增加119.32%～123.47%;与种源总体平均数比较,平均树高增加8.12%～9.53%,平均胸径增加6.91%～8.46%,单株材积增加20.24%～22.52%。更多还原

【Abstract】 The experiment in regard to selection of superior provenances of Castanopsis fissa was carried out in 3 plots in Guangxi province in 2006.These provenances consisted of 9 origins from Guangxi,Guangdong,Hunan,Fujian and Hainan Provinces.It showed that(1) the variation of tree height,DBH(diameter at breast) and volume of wood increment were significant among the provenances;(2) two superior provenances were selected,which were ZY5 and ZY7,both from Rongshui and Cangwu of Guangxi Province.Compared to worst performed provenances ZY6,which was from Ledong of Hainan Province,the two provenances’height increased by 27.80 %～29.47 %,average DBH increased by 29.97 %～ 31.86 %,volume of wood of single tree increased by 119.32 %～123.47 %.While compared to whole provenances,that of them were 8.12 %～9.53 %,6.91 %～8.46 %,and 20.24 %～22.52 % respectively.更多还原