Look at the lines of watermelon. Watermelon lines are wide, indicating that the melon is ripe. The wider the grain, the higher the maturity, while the melon is raw. Listen to the sound of knocking on watermelon. If it sounds like drums, it means raw melons. If it's plop, it means it's a ripe melon. When shooting watermelon, if the sound is dull, it means that it is a ripe melon. The duller the sound, the more mature it is. If the sound is crisp, it means raw melon.
As someone said, picking watermelons depends on the sweetness of the vines. This statement has no scientific basis. The curvature and straightness of vines have nothing to do with sweetness. If there is hair on the vine, it means that the melon is tender and not fully mature. If there is no watermelon vine or the vine is completely dry, it means that it has been placed for a long time, and it is best not to choose this kind of melon.
Other identification methods
Watermelon actually belongs to the Appearance Association. As far as ordinary watermelons are concerned, male watermelons are rectangular, with more water and more juice. Short and round watermelons are female watermelons and taste sweeter than male watermelons.
Generally speaking, it is necessary to choose the melon skin with dark color and bright color, which shows that the melon is very energetic, ripe and tastes good. If the skin is too tender or too white, it means it is not ripe yet. Watermelon will have some spots on the ground. If these spots are light yellow, it means that watermelon is ripe and sweet. If these spots are white, it means that the melon will not taste very good.