What should I do if the watermelon cracks?

"Bang", "Bang" ... After a rainstorm, the 20-mu watermelon planted by Huang Boss in Zuozhou Town, Fusui County cracked: many watermelons naturally cracked from the navel, and the watermelons to be listed split into several petals. Boss Huang was heartbroken and muttered, "Did you buy the wrong melon seeds?" It is understood that at present, many growers in the main watermelon producing areas in Guangxi have encountered watermelon cracking, which has caused great losses to growers. Therefore, Yuhualing's technical team investigated and analyzed the watermelon cracking problem, and concluded that watermelon cracking mostly occurred in the middle and late stage of expansion, with various reasons, and summarized some effective preventive measures. 1, variety reason. Some varieties have thin skin and crisp skin, and the navel of melon is big. If there is a slight collision, melon cracks will appear. Too thin and crisp varieties are not easy to manage and harvest. Therefore, when selecting seeds, we should choose varieties with strong peel toughness and not easy to crack melons, or choose varieties that are resistant to cracking on the market now. 2. Fertilization is unscientific. When a large amount of nitrogen fertilizer is applied at the swelling stage of watermelon, the toughness of the peel will be reduced, the skin will expand slowly, and the contents will expand rapidly, leading to melon cracking; During the expansion period, when the roots are heavily fertilized, the plants grow too fast, and the growth of melon skin can't keep up with the growth of pulp, and it will burst due to internal forces. Therefore, high-quality decomposed organic fertilizer should be used as base fertilizer, nitrogen, phosphorus and potassium should be used as topdressing, compound fertilizer should be used as main fertilizer, more potassium fertilizer should be applied, phosphorus and calcium fertilizers should be supplemented appropriately, the amount of nitrogen fertilizer should be reduced, the toughness of pericarp should be improved, and the practice of less fertilization times should be paid attention to. 3. The water supply is unbalanced. Long-term soil drought, sudden rainstorm or large amount of watering during melon expansion will cause melon cracking. Huang Laoban's 20 mu watermelon in Zuozhou Town, Fusui County, cracked because of long-term drought and lack of rain, the plant absorbed too much water, and the skin grew slower than the contents. Therefore, in drought, a small amount of water should be properly added on the basis of watering the soles of the feet before sitting on the melon to prevent the soil from being too dry during the melon expansion period. Water melon in a balanced way during the swelling period to avoid sudden increase in watering or flooding in the short term. It is not appropriate to leave the melon on the whole branch. Watermelons with large umbilicus tend to have small umbilicus. When taking melon embryos, choose some melon embryos with large umbilicus, and cracked melons will also appear. In addition, if the watermelon plant leaves too little melon, the single melon absorbs too much nutrition and expands too fast, which will also cause melon cracking. Therefore, young melons with small umbilicus and good fruit shape should be selected when fixing melons; It is necessary to prune scientifically to prevent excessive growth of watermelon vines and affect the development of young melons. Yuhualing technical team reminds everyone that spraying Yuhualing series products can regulate the growth of vines and melons during the growth of watermelons, reasonably control the overgrowth and prevent melons from cracking.