通过调查和解剖发现，银杏复干均起源于茎／根过渡区以上的茎部固定潜伏芽，在２年生苗木上清晰可见。银杏复干属于“茎生枝”现象，扦插苗、嫁接苗形成复干的能力明显高于实生苗。研究了复干的发端部位、茎／根关系、影响复干产生的因子以及复干利用途径等理论与实践问题。 Through investigation and anatomy, it has been found that Ginkgo biloba stems from the stems fixed latent buds above the stem / root transitional zone, which are clearly visible on 2-year-old seedlings. Ginkgo bilobalum belongs to the phenomenon of “stems and branches”. The ability of cuttings and grafted seedlings to form complex stems is obviously higher than that of seedlings. Studied the origin and location of the stem, the relationship between the stem and the root, the factors that affect the occurrence of repetition, and the ways and means of repeated use.