Asparagus is also called "asparagus", "asparagus", exposed bamboo shoots, reed tips and so on. It belongs to Liliaceae, a perennial perennial plant. ?
The edible part of asparagus is its tender stem. It is extracted from underground stems in spring, with tender and plump stems, round terminal buds and compact scales. It is white and tender before being unearthed and is called white asparagus. Young stems turn green after seeing light, which is called green reed. ?
Native to the eastern Mediterranean and Asia Minor, there are still wild species in grasslands and valleys of Europe, Asia continent and North Africa. It has a cultivation history of more than 2,000 years./kloc-was introduced to America in the 0/7th century, to Japan in the 0/8th century, and to China in the early 20th century. It is cultivated all over the world, with the United States as the largest. ?
Asparagus was cultivated in China since the Qing Dynasty, with a history of only 100 years. It was cultivated sporadically in the suburbs of major cities in coastal areas and sold locally. Since 1984, China, Fujian, Henan, Shaanxi, Anhui, Sichuan, Tianjin and other cities have developed asparagus production on a large scale. By 2007, the cultivated area will reach1720,000 hectares.
Nutritional value and use Asparagus, known as the "king of vegetables", has the highest nutritional value. Every 1 kg of fresh asparagus contains 25g of protein, 2g of fat, 50g of carbohydrate, 7g of crude fiber, 220mg of calcium, 620mg of phosphorus, 20mg of sodium, 200mg of magnesium, 2.78g of potassium and 0/0 of iron. Vitamin B1:1.8mg, vitamin B2: 0.2mg, nicotinic acid15mg, pantothenic acid 6.2mg, vitamin B6:1.5mg, folic acid1.09mg, biotin/kloc-0. Asparagus is eaten with tender stems, which is fresh and tender in texture, delicious in flavor, tender and delicious. In addition to serving meals, stimulating appetite, helping digestion and supplementing vitamins and minerals, it contains more asparagine, aspartic acid and other saponin substances, which can prevent and fight cancer and has curative effects on cardiovascular diseases, edema, bladder and other diseases. Asparaginase is a drug for treating leukemia. Therefore, asparagus has become one of the health-care vegetables. At present, there are many kinds of anticancer drugs and health-care products using asparagus as the main raw material at home and abroad, which is an important reason why it can be planted in a large area in the world and sells well. ?