How do you know if the watermelon is raw or overripe

The landlord may wish to pat it with his hand, and when he hears the crunchy sound, it feels very elastic, and the probability of cooking is very high.

1 Visual inspection. Look at the appearance of the fruit and the bristle tendrils. The surface of the fruit exhibits morphological characteristics such as skin color, reticulation or stripes inherent to the variety.

The ripe melon has clear veins, distinct shades, the base of the fruit stalk is slightly contracted, the navel is concave inward, and the landing part turns yellow; Under normal plant growth, the fruit setting node and the tendrils before and after are withered, and the bristles of the fruit stalk are sparse and fall off, indicating that the fruit is ripe.

2 Hand test. Flick the melon with your fingers or pat or touch the melon with the palm of your hand. The dullness of the melon is a ripe melon.

It produces a crisp and crisp sound for raw melon. When you touch the skin of the melon with your hands, the one that has a slippery feeling is the cooked melon, and the one that is astringent is the raw melon. One hand to hold the melon, one hand on the top of the melon gently patting, such as the palm of the melon slightly trembling, the melon makes a loud sound is a ripe melon, such as the hand of the melon does not feel trembling, the sound of the sound is raw melon.

Squeeze both ends of the fruit with both hands at the same time, put it in your ear and listen, if there is a hissing melon cracking sound, it is a ripe melon. For watermelons of the same variety and volume, raw melons are heavier than ripe melons, and overripe melons are lighter than ripe melons. Experienced people can use the identification method of "hand-held melon", that is, the second-hand melon is slightly lightweight, and the watermelon with good maturity is the watermelon.

3 Marking. After the female watermelon flowers open or pollinate, a 50 cm tall branch or bamboo strip is inserted next to the flower to mark it, and the upper end is painted with different colors. Change the color every 2 days and mark the single melon.

The ripening period is estimated according to the accumulated temperature or number of days required for each variety to mature. By marking the date of fruit set and checking the cutting of melons, the harvest is carried out at the right time according to the marking.

4 Specific gravity method. Fruit specific gravity was determined. The specific gravity of ripe watermelon and water is not the same at room temperature.

The density of watermelon with suitable maturity is that the proportion of raw melon is greater than and less than that of overripe melon. The watermelon can be put into the water for observation, if the watermelon is completely sunk, it indicates that the raw melon, the surface part is very large; Indicates that it is overripe and does not surface much, indicating ripe melon.

6 Instrumental assays. It can be used with a non-damaging melon and fruit tester produced in Shanghai. When measuring, as long as the center line of the probe of the tester is aimed at the center point of the fruit, it is less than or equal to 8 degrees for raw melon, and more than 8 degrees for cooked melon, and the accuracy is higher.

There is also a watermelon raw and ripening tester jointly developed by Shanxi Medical Device Factory and Pinglu County Native Fruit Company, with an operating efficiency of 380 melons per hour.

Tap with your finger to hear a crisp sound, if you hear a muffled sound, it means that it is overcooked.

First look at the watermelon to see if there are white hairs around the roots, if there is raw, if it is smooth, it is ripe.

Tricks for picking watermelons: "pinch, play, check, touch, look". Pinch: Pinch the skin of the melon with your fingernails, the cooked skin is crispy and juicy, so it is easy to pinch in, and the skin of the raw melon is harder and difficult to pinch.

Bullet: Use the index finger or middle finger to hit the watermelon, if the sound is muddy and heavy, the sound of "bang bang" must be ripe melon; For example, it is raw melon that makes a crisp sound of "dang"; The "poof" sound is an overripe watermelon.

Ripe watermelons are lighter than unripe watermelons, but watermelons that are too light may be overripe or rotten. The watermelon with a pronounced heaviness is definitely a raw melon.

Touch: Ripe melons that feel hard and smooth to the touch, raw melons that are not smooth and sticky.

Look: The skin of the melon is smooth and bright, the dark green pattern is clear, there is no white hair, and the bottom of the melon is orange. The color of the melon skin is not bright, the texture is not clear, the melon skin has fine hairs, and the melon handle is blue-green and has fine hairs. The one with the withered stalk is the dead seedling.