杉木优良种源群体内,林分生长存在着显著差异,种源的开发利用,以优良林分的选择为基础.优良林分选择,年均生长量达三个“0.7”,立地指数达18以上,立木质量指标:Ⅰ级木达27%,Ⅲ级木在22%以下.林分年龄从12年开始,进入产果期,产果量达10年以上,大小年明显。本文还揭示了融江流域优良种源形质特征与林木速生的相关性。 There were significant differences in the growth of stands in the superior provenances of Chinese fir, and the development and utilization of provenances were based on the selection of the superior stands, with the average annual growth of three “0.7” and the site index of 18 , The quality index of standing wood is: Grade I wood reaches 27%, grade III wood below 22% .Starting from 12 years old, it reaches the fruit-producing period, the fruit yield reaches more than 10 years, the size of the year is obvious. The paper also revealed the correlation between the elite provenances and the fast-growing of forest in Rongjiang River Basin.