Measures to improve the survival rate of watermelon grafting

The first is to select rootstocks with strong affinity with watermelon scion varieties and strictly control the size of rootstocks. The second is to cultivate rootstocks and scion seedlings with strong Hypocotyl. The seedling heart of rootstock was picked 2 days before grafting to improve the survival rate of grafting. The third is to master the grafting technology skillfully. First of all, the bonding surface of rootstock and scion should be as wide as possible; secondly, the combination of rootstock and scion should be close, and the scion should be tightly inserted at the top; third, the action of grafting should be fast and accurate, so as to reduce the exposure time of rootstock and scion section in air. The fourth is to strengthen the seedling bed management of grafted seedlings. It should be managed in place from the aspects of seedling bed temperature, humidity, light, removal of rootstock sprouting, scion root cutting and so on.