When and how to water watermelons

Watermelon has large fruit, high yield and large water demand, especially in dry season. The water demand of watermelon varies greatly in different periods, and watermelon has two easy-to-crack periods after sitting on the melon. Therefore, the mode of one-time watering should not be adopted, and watermelon should be watered according to its water demand characteristics. Water requirement characteristics Watermelon needs less water at seedling stage. Generally, measures such as water control and squatting seedlings are taken to promote solid and strong roots. The water management of watermelon during vine extension should master the principle of combining promotion and control to keep the soil dry and wet. Watermelon is sensitive to water after it enters the flowering and fruiting stage. If the water supply is insufficient at this stage, the ovary of the female flower is small and stunted. If there is too much water supply, it is easy to cause the growth of stems and vines, which is also bad for sitting melons. Therefore, it is advisable to keep the soil moist during this period. Watermelon expansion period is a period of more water demand, so it is advisable to increase the amount of watering to keep the soil moist. Reasonable watering according to the water demand characteristics of watermelon is the guarantee of early maturity and high yield of watermelon. Slow seedling water: After 7 days of seedling transplanting, slow seedling water should be poured in time to promote slow seedling. Watering should be done at 8- 10 on a sunny day. Stretching water: the water demand of plants increases during stretching. When the main vine and the auxiliary vine appear after the watermelon "shakes the tap", it is necessary to supplement the water by dark irrigation under the film, and the water amount should not be too large. Three times after sitting on the melon: water the melon about 10 day after pollination. After that, avoid the easy-to-crack melon period when the watermelon and goose eggs are big, and water the swollen melon when the watermelon bowl is big. Before the watermelon changes color, water it again, this time with enough water, because it can't be watered again until the watermelon is harvested. The water quantity of these three kinds of water should be sufficient, and high potassium fertilizer should be applied with the water to promote the expansion of melon.