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在樟子松种子园以往多采用髓心接触形成层法在砧木侧干部位嫁接。一九七五年我们研究试验用髓心接触形成层在砧木当年生长的新梢部位进行嫁接,成活率达100％。为进一步验证此种方法的嫁接效果,一九七六年我们又在11年生樟子松砧木新梢部位接了210株,成活率达97％同砧木侧干部位嫁接做对照的结果表明,樟子松砧木新梢部位嫁接成活率高、生长快、愈合好(见附表),具有以下优点:
Seedlings in the Pinus sylvestris seedlings in the past to use more pith formation contact method in the rootstock lateral graft. In 1975, we researched and experimented with the formation layer of the medullary contact layer on the shoots where new rootstocks grew in that year. The survival rate was 100%. In order to further verify the grafting effect of this method, in the year of 1976, we picked 210 new shoots of 11-year-old Pinus sylvestris var. Mongolica and the survival rate was 97%. Compared with the graft of the rootstock, Pine seedling rootstock shoot high survival rate, rapid growth, healing (see table), has the following advantages: