What is the melon chipping? How to prevent it?
Melon disintegration, also known as cracking, is a kind of physiological disease. It often appears in the ripening stage of melon. When the disease occurs, large and deep hard-healing cracks appear on the surface of the fruit, and then the flesh at the cracks rots and deteriorates, and quickly spreads around. Some of the melons that have cracked have completely rotted before they mature. Some of them even mature, their storage time is greatly shortened, their quality is reduced, their production is reduced, and their sales and prices are affected.
Reasons for the formation of: 1. Musk fruit in early expansion of the lack of fertilizer, resulting in slow fruit expansion, skin aging hardening. The late supply of fertilizer and water is sufficient, and the pulp inside the melon grows and expands rapidly. At this time, the outer skin is already aging. The internal pulp will burst through the aged skin and cause cracks in the melon.
2. When the melon fruit surface is exposed to sunlight, the peel ages and hardens, and the skin peels and produces a concentric circular turtle crack on the surface of the melon.
3. The plants are too watered at the later stage of the childbirth, and the water absorption of the plants is large. The flesh of the flesh swells, but the skin is already aged, and the flexibility is poor, thus causing cracking.
4. The temperature in the greenhouse after melon fruiting is lower than 15°C. When the air is released, the air outlet is opened too large. When a natural disaster such as cold current causes a large temperature difference between day and night, these conditions will cause melons to crack.
5. In the absence of trace elements such as calcium and boron in the soil, it is also easy to form melons.
Prevent methods: 1. Balance the supply of fertilizer. According to the requirement of fertilizer and water requirement during the growth of melon, the fertilizer should be supplied in a balanced manner. Do not apply water by blind irrigation. When fertilizing, it is necessary not only to apply enough basal fertilizer to meet the needs of early growth of melon, but also to timely fertilizer in the late growth stage of melon, to meet the requirements of melon in later growth period. When watering, on the one hand, it is necessary to pour in water in a timely manner to promote the expansion of melon fruit; on the other hand, do not pour any heavy water after swelling melon water, especially try to avoid watering for about 10 days before picking. melon.
2. Protect the blades. Pay attention to protect the leaves near the fruit, use them to block the sunlight for melon fruit, avoid sun cracking caused by skin aging.
3. Control the temperature. If it is a greenhouse production, we must take insulation measures to keep the daily average temperature of the greenhouse at 15°C or above; when it is released, we should first open a small tuyere, and then gradually increase the tuyere as the temperature rises; At the same time, it is necessary to timely cover insulation materials such as grasshoppers to prevent a sudden drop in temperature.
4. Spray boron calcium. After sitting on the melon, combine watering with 0.3% calcium chloride and 0.12%-0.25% boric acid solution to spray on the leaves, spray once every 7 days, and spray 2-3 times to supplement the deficiency of trace elements. .
Door Panel,Panel Door,Flat Panel Door,Interior Door Panels
Zhejiang Tilanco Industry&Trade Group Co., Ltd , https://www.tilancogroup.com