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红松是我省主要造林树种之一。为了探讨红松苗分级造林的效果,于1973年春进行了红松苗分级造林试验,现将栽后五年的试验结果整理如下。
Korean pine is one of the main afforestation species in our province. In order to investigate the effect of grafted afforestation on Korean pine seedlings, the grafting trial of Korean pine seedlings was conducted in the spring of 1973. The results of the five years after planting are summarized as follows.