Technical key points of watermelon top insertion method

The rootstock with top insertion method should be sown ahead of scion, the first true leaf of rootstock seedling should appear to unfold as the suitable grafting period, and the cotyledon expansion period of scion seedling is suitable. The tools used for top insertion and connection are bamboo sticks and safety blades. When grafting, the first true leaf and growth point of the rootstock are cut off from the base with a blade, and a hole 0.5 to 1 cm deep is obliquely pierced at the cut above the rootstock with a bamboo stick. Then cut off the Hypocotyl epidermis 1 cm below the cotyledons, then turn the scion to cut the second knife oblique from the back, cut off the root of the scion, make the scion section wedge, and quickly insert the cut scion seedling into the hole of the rootstock seedling. Stick as close as possible around the cut of the rootstock.