In the fine natural stands of fine provenance, 80 candidate trees were obtained through 1-4 comparison, with the average tree height 23.9m, the average DBH 72.66cm, the average volume 3.93m3, the average red-heart ratio 71.01%.

• 在福建省马尾松优良种源区内，用对比木法进行红心材优树选择。 共选出80株候选优树，平均树高23.；98m、平均带皮胸径72