杉木是连山林场的主要造林树种。目前,全场的杉木林面积达六万多亩,大部分林分为中龄林和成熟林,木材主伐工作已逐步开展起来,因此,确定合理的主伐年龄已成为当前生产中的重要问题。近来我们对本场山口、太保、光田、大富等工区二十年生 Cunninghamia lanceolata forest is the main afforestation species. At present, there are over 60,000 hectares of Chinese fir forest in the audience. Most of the forest is divided into middle-aged and mature forests. The main work of timber cutting has been gradually carried out. Therefore, determining the reasonable cutting age has become an important issue in current production. Recently, we have been studying the Yamaguchi, CPIC, Mitsuda, Dafu and other work areas for twenty years