Grafting method for increasing watermelon grafting survival rate

The invention discloses a grafting method for increasing the watermelon grafting survival rate.The grafting method comprises the steps that scion seeds are sown at one corner of a hole disk to obtain scion seedlings; when two cotyledons of each scion seedling unfold, stock seeds are sown in the middle of the same hole disk of the scions to obtain stock seedlings; when true leaves just come out from the stock seedlings, grafting is prepared; stock growing points and a cotyledon are chopped, and stems are downwards hacked; a stem of the lower portion of each scion is obliquely cut from the root end to the leaf end; each cut scion is inserted into a stock notch, the cotyledon of each stock makes contact with the cotyledon of the corresponding scion in a cross mode, and fixation is conducted through grafting clips.A broken-root-free hitch grafting mode is adopted, requirements for the scions are inexact, final-period management is easy, the survival rate is 98% or above, grafted seedlings can become adult seedlin