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七十年代初,全省各地普遍开展以杉木为主的用材林基地建设,速度快,面积大,为了摸索切实可行的丰产培育技术,指导基地建设,我们在省林业厅和杭州市林水局的
In the early 1970s, the construction of timber-based forestland dominated mainly by fir was carried out throughout the province. In order to explore practical and feasible high yield cultivation techniques and guide the construction of bases,