The specific operation is to remove the rootstock starting point, with a single blade from the cotyledons side of the middle of the split down, the depth of about 2/3 of the hypocotyl length, about 1.5cm in length, and then sub-cotyledons hypocotyls on both sides of the cut, 1.5cm or so, insert the rootstock incision, so that scion and rootstock combined with a special plastic graft clip. 

This method is higher survival rate, generally a skilled worker can be do it about 60 per hour.

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