<正>４地点１２年生马尾松种源试验林的木材性状研究结果表明，马尾松木材相对密度（比重）和管胞长度在种源间、试验点间有显著或极显著差异，并有极显著的种源×地点效应，来自不同地区种源的木材相对密度具有从西南往东北增大的地理变异趋势。根据木材相对密度、管胞长度及木材生长量在不同层次的变异特点，制浆造纸材的种源选择应以生长量为主，而种源内个体间选择应生长性状和木材性状并重。

Based on the 12yearold data of provenance tests of masson pine (Pinus massoniana Lamb.) in wood property at 4 test locations, significant variations of the effects of provenances, test locations and provenance × location interactions were found in specific gravity (SG) and tracheid length (TL). It was showed that there was a increasing trend in SG of provenances from the southwest to the northeast of the range. According to the variations of SG, TL and stem volume (V) in different levels, V may be regarded as the most important in provenance selection for pulpwood; V and wood property possess the same importance in individual selection within provenances.