粤湘赣三省杉木家系在广东的生长表现

THE GROWTH PERFORMANCE OF CHINESE FIR\= FAMILIES FROM 3 PROVINCES IN GUANGDONG

对营造于广东省信宜市林科所，来自粤、湘、赣三省的１００个杉木家系亲本１０年生子代林的生长量进行方差分析，结果表明：家系间存在着遗传差异；经综合评选，从中筛选出１３个优良家系，广东、江西、湖南入选家系数分别为６个、５个、２个，其树高、胸径、材积平均增益分别为１８．１１％，２０．０７％，６９．８４％。

chinese fir families come from Guangdong, Hunan and Jiangxi provinces were planted in Xinyi city, Guangdong province. The growth were measured after 10 years. The variance analysis results show that there are significant hereditary variation among these families. 13 superior families have been selected (6 come from Guangdong, 5 come from Jiangxi and 2 come from Hunan). Its average gain of hight, D.B.H. and volume are 18.11%,20.07% and 69.84% respectively.\;