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杉木是我省豫南地区的主要造林树种之一,现有人工林四十余万亩。由于这里已是杉木自然分布的北界,所以对环境条件要求比较严格。其生长特点、经营管理技术与中心产区有较大差别。1973年我们在黄柏山林场建立了杉木间伐固定观测标准地,1983年对试验标准地进行了皆伐,试验研究结果如下: 试验标准地设置与研究方法 (一)准标地设置:在黄柏山林场后山
Cunninghamia lanceolata is one of the main afforestation species in the south of Henan Province. There are more than 40,000 mu of existing plantations. Because here is the natural distribution of the northern boundary of Chinese fir, so the environmental conditions are more stringent requirements. Its growth characteristics, management and production center has a greater difference. In 1973, we set up a fixed observational standard of fir thinning in Huangbaishan Forest Farm. In 1983, we conducted clearcutting on the experimental standards. The results of the experiment are as follows: Setting of experimental standards and research methods (I) Setting of quasi-standard plots: After the game mountain