Cracking melon to reduce the quality of watermelon how to control watermelon crack melon

Split watermelon is a physiological disease, and fast-ripening watermelons have a high incidence. Watermelons split into two or more petals from the navel, resulting in fruit cracking. Watermelon cracking seriously reduces the quality of watermelon. Reasons for cracking: 1, variety reasons, the general small watermelon thin skin is easy to crack. 2. For the reason of moisture, excessive water control in the early stage, aging of the cortex, excessive moisture in the later stage, the growth rate of melon meat is faster than that of peel. Easy to crack melon 3, climate reasons, suddenly hot and cold easy to crack melon. 4, light reasons, continuous cloudy days, sudden sunny exposure, easy to crack melons. 5. If the use of dilatins is too late and the concentration is too high, it will also cause cracking.

watermelon

Prevention and control methods:

1. Select excellent varieties. Seedless or few-seeded watermelons are prone to flat melons and flat-headed melons; large watermelon varieties are prone to wide-shouldered thick-skinned melons; watermelons with thin and crisp peels and small fruit watermelons are easy to crack. Therefore, the selection of these watermelon varieties should be avoided.

2. In the early stage of watermelon development, it is easy to form flat melon, gourd-shaped melon and belly melon if it meets adverse climate, such as low temperature, drought, lack of light and improved conditions in the later stage; if watermelon develops in the early stage, the climate is suitable, low temperature and dry in the later stage, and it is easy to form sharp-billed melon. In the later stage of watermelon expansion, cracked melons will also be caused by low temperature, heavy rain or too much irrigation. Zhuangguatiling was sprayed in the watermelon flowering stage, young fruit stage and watermelon expansion stage to thicken the stem, provide sufficient nutrients and coordinate the nutrition balance of watermelon plants. at the same time, new high fat film was sprayed at flowering stage, young fruit stage and watermelon expansion stage to quickly form a protective film on the surface of watermelon to prevent watermelon from being damaged by natural disasters.

3. Strengthen the management of fertilizer and water. In the early stage of watermelon expansion, lack of fertilizer and water, water fertilizer is sufficient in the later stage, it is easy to form big-bellied melon; water and fertilizer is sufficient in the early stage, and lack of water and fertilizer in the later stage, it is easy to form sharp-mouth melon. Local temperature difference and injury will also form deformed watermelons. At the same time, lack of fertilizer and water in the early stage, sufficient fertilizer and water in the later stage, it is easy to crack melons; the land lack of calcium and magnesium is easy to crack melons, therefore, it is necessary to strengthen the fertilizer and water management of watermelon orchards.

4. Spray trace elements. After sitting melon, combine watering with 0.3% calcium chloride and 0.12%-0.25% boric acid solution for foliar spraying, spray once every 7 days, even spray 2 times 3 times, in order to supplement the deficiency of trace elements in watermelon.