对设在福建三明中村试验点 73个 9年生的马尾松优树子代试验林进行调查研究 ,结果表明 ,不同家系在生长性状上存在极显著差异 ,在木材基本密度、通直度、圆满度上也存在较大的变异 ;以单株木材干物质产量为主要指标 ,从参试的 70个家系中选出 8个建筑材优良家系 ,增产效果显著 The investigation on 73-year-old P. massoniana progenies from the pilot plantation in Zhongming Village, Sanming, Fujian Province showed that there was a significant difference in the growth traits between different families. The basic density, straightness, There is also a big variation; single wood per unit output of dry matter as the main indicator, from the test of 70 families selected eight building materials excellent families, significantly increased yield