1. Cucumber: The fruit is cylindrical, about 20 cm long, with a transverse diameter of 13 cm, and the skin is light yellow, with about 8 irregularly protruding longitudinal edges on the melon surface. The pulp is thick, crisp and juicy, green and sweet, with sugar content of about 14% and fragrance. The weight of single fruit is 0.5- 1 kg, and the yield per mu is about 2000 kg.
2. Pumpkin: The fruit stalk is thick, angular and grooved, 5-7 cm long, and the melon stalk expands into a trumpet shape; The shape of Broussonetia papyrifera is diverse, and varies with varieties. There are often several longitudinal grooves or no longitudinal grooves on the outside. Most seeds are ovoid or oblong, grayish white, with thin edges, length 10- 15 mm, width 7- 10 mm.
3, sweet potato: the shape is spindle-shaped, with obvious petal-like structure, the skin is yellowish and white, and the yellowish skin outside is peeled off. The meat inside is very white, and the texture of the meat looks a bit like sweet potato.
Second, distribution.
1, zucchini: South Asia, South China, Central America, etc. Now it is widely cultivated on five continents.
2. Pumpkin: Originated from Mexico to Central America, it is widely planted all over the world. Introduced to China in Ming Dynasty, it is now widely planted in north and south.
3. Sweet potato: native to tropical America. America has a long history of planting. After Columbus discovered the New World, it was introduced to the Philippines by the Spanish and then spread to all parts of the world. It is widely planted in southwest China, South China and Taiwan Province Province.
Third, the nutritional value
1. Cucumber: It is rich in citrulline, arginine, aspartic acid, various unsaturated fatty acids, trigonelline, adenine, carotene, glucose, sugarcane granules, pentosan, mannitol, vitamins B, C and E, and various trace elements such as magnesium, iron, copper, selenium and zinc.
2. Pumpkin: The fruit of pumpkin is used for cooking and is also a substitute for food. All parts of the whole plant are also used for medicine. The seeds contain amino acids in pumpkin seeds, and have the effects of clearing away heat, removing dampness, expelling worms, controlling and killing Schistosoma japonicum, clearing vines, preventing miscarriage and radically curing toothache.
3, sweet potato: contains more cellulose, can absorb water in the intestines to increase the volume of feces, causing laxative effect. Among them, rich fiber is helpful for defecation. Sweet potato contains a lot of sugar, protein, vitamins and minerals, carotene and vitamin C, anticancer substances that inhibit the growth of cancer cells, and a lot of dietary fiber.
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