Causes of hollow and cracked watermelons

The causes of hollow and cracked watermelons are as follows: first, insufficient water supply in the expansion period; second, low temperature in the fruiting period; third, poor plant growth. Fourth, the fruit was harvested too late. The reasons for watermelon cracking are as follows: first, the water supply of watermelon fruit changes suddenly, the volume of watermelon pulp increases too fast after water absorption, and the growth rate of melon peel can not keep up with the growth of melon pulp. Second, when it is cloudy and sunny for a long time, the temperature rises too fast and too high, which will also cause fruit cracking. Third, it is easy to crack melon when the fruit is damaged by collision, extrusion, insect pests, grass pests and so on. Fourth, the reason of variety. Varieties with too thin or brittle pericarp are easy to crack.