The invention relates to the field of agricultural planting
grafting, and provides a novel
seedling grafting cultivation method. The sizes of
mortise and tenon joints are customized according to the
diameter of a
rootstock; a fork structure is arranged on the
rootstock, and a scion structure complementarily matched with the fork structure is also arranged on the
rootstock; the
tail end
diameter of the scion structure is divided into three equal sections a, b and c; the middle section b is provided with an inserting cone, and the sections a and c at two sides are provided with symmetrical side wings; an angle formed by the side wings and the periphery of a
seedling body is beta of 30 degrees; the length of each side wing is L1, and the length of the inserting cone is L2 which is six times the length of L1; the engagement part between the fork structure and the scion structure after engagement is smooth without a gap, is simply tied up by adopting gauze or
adhesive tapes, and does not need soil and other
nutrient solution. The method provided by the invention is simple in
grafting process and large in grafting contact area, changes the conventional methods for cuttage grafting, inarching,
adhesive grafting, tooth grafting and the like, and reduces the cultivation cost, the
survival rate reaches 100%, and an interface after survival does not have a mark and almost has no difference with the original state by visual measurement.