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杉木在铜仁地区用材林树种中,无论是面积还是蓄积均属首位。据1985年林业资源二类调查统计,全区有杉木人工林面积3.04×10~4ha,占全区人工用材林面积的61.84％;蓄积96.78万m~3,占全区人工用材林蓄积的71.39％。笔者通过一系列调查研究,从经营技术角度提出了该区在杉木生产发展中的一些技术措施,供生产参考。一、自然条件与生长现状1.自然条件铜仁地区海拨200～2572m,属中亚热带季风温暖湿润气候,年均气温13.4～17.5℃,年均降水量1097～1425mm,无霜期275
Chinese fir in Tongren area timber forest species, both area and accumulation are the first place. According to the second category survey of forestry resources in 1985, the area of planted Chinese fir forest is 3.04 × 10 ~ 4ha, accounting for 61.84% of the total area of planted timber forest in the region. It accumulates 967,800 m 3, accounting for 71.39% of the total area of planted timber. Through a series of investigation and research, the author put forward some technical measures in the development of fir production in this area from the perspective of management technology for production reference. First, the natural conditions and growth status 1. Natural conditions Tongren area 200 ~ 2572m above sea level, is a warm and humid subtropical monsoon climate, with an average annual temperature of 13.4 ~ 17.5 ℃, the average annual rainfall of 1097 ~ 1425mm, frost-free period 275