我场栽植杉木已有20年历史,但大面积的杉木造林,是在文化大革命以后,而加强杉木的抚育管理,则是从1970年开始的。目前,全场杉木总面积7500亩,其中已经成林的100亩,已经郁闭的幼林近1000亩,大面积尚处于未郁闭前的幼林阶段。为了总结茅山地区杉木能否发展,能否速生丰产,我们在南海底工区调查了几个样点,现将调查情况(表1)汇报如下: My field has been planted with fir for 20 years, but the large-scale afforestation of the fir started in 1970 after the Cultural Revolution and fir firing management was strengthened. At present, the audience total area of ​​7,500 acres of fir, of which 100 acres of forest has been closed, nearly 1,000 acres of young canopy has closed, the large area is still not in front of the young forest stage. In order to summarize the possibility of the development of Chinese fir in Maoshan area and whether fast-growing and high-yielding can be achieved, we surveyed a few samples in the South China Sea Sub-region. The survey results (Table 1) are reported as follows: