The invention relates to a double grafting method for preventing a scion of a melon grafted seedling from generating a root inserted into soil to be infected with soil-borne diseases. Primarily, the scion is grafted with two rootstocks, wherein the cut surfaces at two sides of the scion is grafted with the cut surfaces of the hypocotyls of two rootstocks not over than the depth of a hollow medullary cavity of the hypocotyls. Accordingly, it can not only save the time of grafting procedure and reduce the time of scion growth affected by grafting action but also significantly improve the graft survival rate. Furthermore, it can prevent the scion from generating its root in the medullary cavity of the hypocotyls of the rootstocks to avoid the phenomenon that the root of the scion is inserted into the soil along the medullary cavity and contacted with the soil. Thus it can avoid the scion to be infected with soil-borne diseases.本發明係有關於一種防止瓜類嫁接苗接穗產生根伸入土中感染土壤傳播疾病的雙重嫁接方法,其主要係令接穗於兩側以切面同時與兩砧木深度不劃破至下胚軸的中空髓腔之切面進行嫁接;藉此,以不僅能節省嫁接過程所花費的時間、減少嫁接動作影響接穗生長的時間,且能大幅提升嫁接存活率,並可防止接穗在砧木下胚軸的髓腔內產生自己的根,避免有接穗自己的根沿著髓腔伸入土中與土壤接觸之現象產生,以能避免接穗感染土壤傳播疾病之情況發生者。
