The invention discloses a
seedling raising method for watermelons. The method comprises the steps of
rootstock preparation,
seedling raising preparation,
seedbed preparation,
seedling raising, management in a
sowing period,
grafting and management of grafted seedlings. According to the method provided by the invention, watermelon
grafting cultivation is performed on the
continuous cropping ground,and above operation has the following advantages: 1, an occurrence of
blight is effectively prevented; 2, the watermelons can be grown at lower temperature; and 3, a
root system of pumpkin rootstockis stronger than that of a watermelon, the grafted seedlings have stronger water absorbing and
fertilizer absorbing capacity, and the roots are widely distributed in soil, so that after the watermelons are grafted, fertilizers can be saved, and the yield of the watermelons can be improved; when
tissue culture of triploid seedless watermelons is performed, root induction of vegetative propagation seedlings is more difficult, the vegetative propagation seedlings are used as scions to be grafted onto the pumpkin
rootstock, so that a shortcoming that seedless watermelon seeds are difficult to reproduce is overcome; when industrialized seedling raising is performed, under the condition of small seeds, branches or buds are grafted onto the
rootstock, so that a quantity of the grafted seedlings is greatly increased; and therefore, the method of using pumpkin and
gourd as a rootstock and
grafting watermelon seedlings is an effective way of development of watermelon planting.