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过去我省云杉育苗主要用遮荫方法,成本较高,花费人力也多。为了改变这一状况,我们从1973年开始了云杉全光育苗试验,并取得了初步成效。4年生全光苗高15.2厘米、基径粗0.4厘米,分别比4年生遮荫苗高11.8厘米、基径0.2厘米的高29.6%和96.5%。由于全光育苗生长健壮,因而造林成活率也由70%提高到85—90%。通过几年的探索,我们认为,要搞好云杉全光育苗,必须抓好以下几个环节: 一、细致整地播种前一年秋季要深耕(20—25厘米)圃地,春季土壤解冻后,再深翻一遍(15—20厘米),每亩施六六六粉4斤,堆肥5方,耙平
In the past, the province mainly used shady spruce nursery methods, higher cost, more manpower. In order to change this situation, we started the whole seedling experiment of spruce from 1973 and achieved initial success. The 4-year-old full-light seedlings were 15.2 cm in height and 0.4 cm in base diameter, respectively, 11.8 cm above the 4-year-old shady seedlings and 29.6% and 96.5% above the 0.2 cm base diameter. Due to the robust growth of all-photon nursery seedlings, the survival rate of afforestation is also raised from 70% to 85-90%. Through several years of exploration, we believe that we must do a good job in the following aspects of spruce seedlings: First, meticulous land preparation The year before the autumn to deep plowing (20-25 cm) nursery, spring soil after thawing , And then deep again (15-20 cm), six six powder per acre 4 kg powder, compost 5, rake