For the split watermelon

Since May, the temperature has changed greatly. The maximum temperature in the day is sometimes above 30°C. At night, the temperature is sometimes only 10°C or less, and there is continuous rainfall. In Baoding City and some cities in Langfang City, the temperature dropped to below 10°C in the night of May 11. On the 17th, the cities of Gu'an County in Langfang City and Quzhou City in Baoding City were hit by strong winds, hailstorms and heavy rainstorms. With such conditions of temperature and climate, rainfall and cooling have a great impact on the growth of watermelons during the watermelon stage. The emergence of watermelon crackers is inevitable.

In addition, the factors that cause watermelon cracking melon include: Variety reasons. The difference between different varieties is larger, and the cultivation habits of vegetable growers are also different. The varieties of cracked melons belong to thin-skinned, crispy, and large- and medium-fruited varieties and are easily split. The time of soil drought before sitting on melons is long, and sudden watering of the squash during the squashing period may cause cracking of the melons in the event of heavy rain. In the early stage of fruit development, it is at a low temperature and grows slowly. It then expands rapidly and causes fissured melons. Implantation of chemical fertilizers during anaerobic period is irrational, a large amount of nitrogenous fertilizers are applied, and trace elements such as calcium and boron are missing. The expansion of the rind skin is slow, and the contents rapidly expand and cause fissures. When using hormones such as guarana, overdose and other improper use can also cause cracking melons.

The current watermelon melons are related to the recent strong winds, rainfall, cooling, and hail. The recent continuous rainfall, cooling, watermelons in the growth stage, resulting in reduced surface toughness of watermelon, with the weather cleared, the temperature increased, then watermelon is in a fruit development period, the growth rate of the internal material melons is greater than the growth of melon, resulting in watermelon Crack melon.

How to prevent cracking melon: In the selection of species, we must first choose the tough, cold, drought-resistant, crack-resistant watermelon varieties. Exposed watermelon planting should be done as far as possible drainage facilities, in case of heavy rain can promptly rule out melon fields. In the watermelon field, as far as possible, some high-stalk crops are interplanted to reduce the temperature and humidity. Watermelon cultivation density should be moderate, so that ventilation. Pay attention to weather changes at any time and take precautions against wind, warmth, and coldness as soon as possible. Strengthen management, pay attention to the rational use of nitrogen, phosphorus and potassium.

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