建国以来,特别是七十年代,南方各省发展了一大批人工杉木林,其中绝大多数为纯林,现已进八成熟.近熟阶段。由于杉木纯林的生长特点,往往导致地力衰退,十余年后杉木生长量下降。最近笔者在本县高公寨林场进行杉木生长调查,发现不少人工杉木林下阔叶树天然更新良好,如有目的地进行培育,可望成为较好的杉木阔叶树混交 Since the founding of the People’s Republic of China, especially in the seventies, a large number of artificial Chinese fir forests have been developed in various provinces in the south, most of which are pure forests and now have matured into eight mature stages. Due to the growth characteristics of pure Chinese fir plantation, it often leads to the decline of soil fertility. The growth of Chinese fir plantation declines more than ten years later. Recently, the author conducted a survey on the growth of Chinese fir in Gaogongzhai Forest Farm in this county, and found that many of the artificial broad-leaved trees in the Chinese fir plantation are naturally updated. If the cultivation is purposely carried out, it is expected to become a better mixed plantation of the deciduous broad-leaved tree