Summer is coming, and the green watermelon is ripe. It is green all over and has dark green stripes. When you cut the watermelon, the red pulp and black seeds are exposed. It is fragrant and sweet in your mouth and very delicious. There are many kinds of watermelons, and the most common one on the market is mine melon. Its skin is very thin, the flesh is bright red, the seeds are very small, and there is a lot of water. It is really sweet and refreshing.
Rock-headed melon is oval with thick skin, but its skin can also be eaten as a dish. First, peel off the skin, then marinate it with salt, and add a little monosodium glutamate, sugar, vinegar and sesame oil. It tastes fragrant and crisp. Watermelon is very nutritious. It is rich in vitamins and has the effect of diuresis and relieving summer heat. Watermelon is full of treasures, and everyone loves watermelon.
Watermelon:
Watermelon (Citrullus lanatus) is an annual vine of the genus Cucurbitaceae, which is similar in shape to a sphere or an ellipse, with dark green, light green or black-green stripes or markings. Melon seeds are black, oval and pointed; Stems and branches are stout, with light yellow-brown pilose; The leaves are paper-like, triangular and oval with wavy edges. The flowering and fruiting period is May-June. Watermelon was introduced into China from the western regions in the 9th century, hence its name.
Watermelon is mainly planted in tropical areas, and has been cultivated in southern Xinjiang and Central Asia for more than 1000 years. Watermelon likes warm and dry climate, is not cold-resistant, drought-resistant and moisture-resistant, likes light, and needs a large amount of fertilizer. Sandy soil with loose soil, deep soil layer and good drainage is the best. The propagation methods include grafting propagation and seed propagation, mainly through seed propagation, with the help of external force or artificial cultivation, new watermelon seedlings will grow.
Morphological characteristics:
Annual vine; Stems and branches are stout, with obvious furrows, and are long and dense white or fawn villous. Tendrils are stout, pubescent, dichotomous, petiole thick, 3- 12 cm long and 0.2-0.4 cm thick, with inconspicuous furrows and densely pilose; Leaf blade is papery, triangular and oval in outline, with white-green color, 8-20cm long and 5-15cm wide, with short bristles on both surfaces, more veins and dorsal surfaces, 3-parted, and longer middle lobes.
Growing environment:
Watermelon likes warm and dry climate and is not cold-resistant. The optimum temperature for growth and development is 24-30 degrees, the optimum temperature for root growth and development is 30-32 degrees, and the minimum temperature for root hair occurrence is 14 degrees. Watermelon needs a large temperature difference between day and night during its growth and development. Watermelon is drought-tolerant and moisture-intolerant, and it is susceptible to diseases when there are too many rainy days and the humidity is too high. Watermelon likes light and has a long growth period, so it needs a lot of nutrients.