How to prevent and cure melon crack

1. Apply fertilizer scientifically. According to the law of fertilizer and water demand during muskmelon growth, balanced supply of fertilizer and water, do not blindly water and fertilize. When fertilizing, we should not only apply sufficient base fertilizer to meet the needs of muskmelon growth in the early stage, but also apply fertilizer in time in the late growth stage of muskmelon to meet the fertilizer requirements of muskmelon growth in the later stage. 2. Rational irrigation. On the one hand, the melon should be watered in time to promote the expansion of the melon fruit; on the other hand, after watering the melon, do not pour water, especially about 10 days before picking, try not to water the melon to prevent cracking. 3. Protect the leaves. Pay attention to protect the leaves near the fruit, use them to shield the melon fruit from the sun, and avoid cracking melon caused by the aging of the pericarp caused by sunlight. 4. Control the temperature. In greenhouse production, heat preservation measures should be taken to keep the daily average temperature of the greenhouse above 15 ℃; during ventilation, a small tuyere should be opened first, and then the tuyere should be gradually enlarged with the increase of temperature; in case of a sudden cold current, thermal insulation materials such as grass grass should be added in time to prevent the temperature from dropping suddenly. 5. Protect the fruit. When the fruit is exposed to the sun, newspaper bags can be used to shade the sun to prevent direct sunlight. Shading can also prevent green spots on the fruit surface and keep the fruit beautiful, which is especially important when cultivated in summer. 6. Spraying trace elements. After sitting melon, combined watering with 0.3% calcium chloride and 0.12% Mel 0.25% boric acid mixture for foliar spraying, once every 7 days, 2-3 times in a row.