There is no mandatory requirement to plant watermelons without grafting, and it is also possible to plant seedlings. Choose grafting seedlings or live seedlings completely depends on their own situation, if the planted plot has not been planted in 5 years of melon and fruit crops, or do not care about yield, do not pursue economic interests, how much can be harvested, it is completely possible to live seed planting; if you want to obtain high yield and stability, or grafting seedlings is better.
Advantages of watermelon grafting
Improve the plant's disease resistance: Watermelon grafting is first of all to solve the big problem of blight. Farmers who have planted watermelons know that if they are continuously farmed, from the second year onwards, watermelon seedlings will appear blight one after another, and it is difficult to prevent and control, resulting in serious yield reductions or even harvest failures, and watermelon seedlings grafted with pumpkins, gourds, etc. can resist blight, thus solving the biggest obstacle to watermelon continuous cropping.
Watermelon stress resistance enhancement: The root system of watermelon seedlings grafted with pumpkin as rootstock is strong, which greatly enhances the ability of watermelon to resist low temperature, drought and moisture.
Watermelon stable yield and high yield: The root system of watermelon grafted seedlings will be more developed, the fertilizer absorption ability is strong, and the melon seedlings will grow faster and more robustly, laying the foundation for high yield and stable yield.
Watermelon grafting method
The simplest method of grafting watermelon is to sow rootstock seedlings and scion seedlings in the same nutrient bowl.
Seedlings: Choose to carry out in a plastic greenhouse, fill the nutrient soil with a nutrient bowl, sow the soaked and germinated watermelon seeds in a nutrient bowl, cover the fine soil 1 cm thick, cover the film to keep warm and moisturize; after 3 days, sow the soaked pumpkin seeds next to the watermelon seeds in the same nutrient bowl, and manage the same as the watermelon seeds after sowing.
Grafting: When the watermelon seedling grows 2 to 3 true leaves, the pumpkin seedling grows 2 true leaves, and a true leaf can be grafted after it is unfolded.
Take out the nutritious bowl with two seedlings (rootstock pumpkin seedlings, scion watermelon seedlings) inside, cut off the heart (growth point) of the rootstock pumpkin seedlings, and use a blade to cut a beveled surface from top to bottom from the side of the rootstock leaf, with a length of 7 mm and a depth of three-fifths or two-thirds; then cut a beveled surface from the bottom to the top on the side of the scion watermelon seedling leaf, with a length of 7 mm and a depth of one-half or two-thirds, and then embed the rootstock cutout into the scion incision, stick it together, and fix it with a graft clip.
Management: before grafting to water enough, within 5 days after grafting is the healing period can not be watered, generally grafted for about 10 days to live, can be in accordance with conventional management, lightening and moisturizing, grafting about half a month, you can remove the grafting clip, the roots of the watermelon seedlings removed.