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杉木为我省速生用材林主要造林树种.解放后,造林保存而积约300多万亩.其中,大多已属成林阶段,迫待抚育间伐,有的急需改造.为提高杉木中幼林抚育问伐和低产林改造的质量,开创我省用材林基地建设的新局面,实行集约经营,增加林木生长量,特根据原国家林业总局1987年颁发的《国有林抚育间伐、低产林改造技术试行规程》有关规定,结合我省杉木生产实际和林学特性,总结有关科研成果和生产技术经验,提出本技术要点,供作有关国营和集体造林试用.
After the liberation, the afforestation conserves and accumulates about 3000000 mus.Among them, most of them have been in the forest-forming stage, waiting for tending thinning, and some urgent need to be reformed .In order to improve the fir nursery logging And the quality of low-yield forest transformation, and create a new situation in the construction of timber forest base in our province, the implementation of intensive management, increase the amount of forest growth, especially according to the State Forestry Administration issued in 1987, “state-owned forest tending thinning, low-yielding forest transformation technology trial regulations” Provisions, combined with our actual production of fir and forest characteristics, summed up the scientific research and production experience, put forward the technical points for the state-owned and collective afforestation trial.