Before the grafting, gourd seeds are sowed, and after 5-7 days, the watermelon seed is sown. 7-10 days after sowing of watermelon, the cotyledon has just started, when the gourd has a true leaf, it can be grafted. The first true leaf of the gourd appears to be in the initial stage of the grafting. After the completion, the hypocotyl is hollow, which affects the grafting survival. rate. When grafting, the growth point of the gourd is first removed with a blade, and then a bamboo hole is inserted obliquely at a cut point of the growth point of the gourd and a hole of about 0.5-1 cm in depth is inserted. Watermelon seedlings from the cotyledons into the hole in the gourd seedlings. Note that the directions of watermelon and cotyledons should be consistent with the cotyledons of the gourd direction. After grafting, the grafted seedlings should be quickly transplanted into the nutrition bowls, arranged neatly, poured in a low water, and a small arch shed is affixed on the top to make it moisturize and shading properly. Grafted seedlings should be tightly sealed within 3 to 6 days after being placed in the seedbed enclosure. At about 25°C, the interface generally healed in 3 days and survived completely in 7 days. In order to prevent the scion wilting during survival, the humidity in the shed should be kept at 100% after sealing. It is advisable to see the water droplets on the inner wall of the film. Grafting seedlings can survive after ventilation. In the three days of the enclosure, shades of grass or multi-layer shade nets are used to cover the shading of the shacks during the day and night. Only a small amount of scattered light is allowed. After 3 days, the amount of visible light can be gradually increased. Ventilation is started 6 days after the enclosure, so that the grafted seedlings that survived can adapt to the normal seedbed environment.
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