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我省南部地区是杉木自然分布的北界,要求环境条件比较严格。其生长特点、经营管理技术与中心产区有很大不同。由于我省对杉木林的抚育间伐没有进行过系统的研究,因此,对急需抚育间伐的杉木林束手无策。为了解决这一问题,提高杉木人工林的生产能力,商城黄柏山林场、河南农学院林系和省林业厅等单位开展了抚育间伐各项技术指标
Southern region of our province is the natural distribution of the northern boundary of Chinese fir, requiring more stringent environmental conditions. Its growth characteristics, management and production technology center with a very different area. Since there is no systematic study on the thinning of Chinese fir plantations in our province, we are at a loss what to do with the Chinese fir plantations in need of tending and thinning. In order to solve this problem and improve the productivity of Cunninghamia lanceolata plantation, various technical indicators such as tending of thinning were carried out at Huangbaishan Forest Farm, Henan Forestry College and Provincial Forestry Department.