Young leek seedlings, bulbs, pseudostems and flower buds can be fried, used as soup or seasoning. Leek is cold-resistant, cold-resistant and has strong growth potential. It can withstand high temperature of about 38℃ and low temperature of-10℃.
The difference between leek and scallion
The first half of leek is really like leek, and the second half is like green onion. The appearance of green onions and leeks is obviously different. The most obvious difference is that the leaves of green onions are hollow, while the leaves of leeks are real.
In the whole onion and garlic family, the populations are somewhat similar, and no obvious stems can be found on them. The stalk of leek, the white stalk of green onion and the short stalk of leek are just stalk-like structures wrapped by layers of leaves. That's why when we cut chopped green onion, we feel like cutting a thousand layers of rolls.
China has a long history of planting green onions, which was first recorded in the Book of Songs. Onion is a biennial herb of Allium in Liliaceae. There are more than 100 kinds of Allium vegetables in China, which are mainly distributed in northwest, northeast and north China. Allium plays an extremely important role in vegetable production in China. Its planting area accounts for 10% of the total planting area of vegetables, and its output accounts for 7% of the total output.
Efficacy and function of leek
1. Like onions and green onions, leeks contain diallyl sulfide. Diallyl sulfide can stimulate leek to secrete gastric juice, which is helpful to increase appetite.
2. Leek leaves contain more vitamin A, vitamin C and calcium than the white part of leek. Onion contains a considerable amount of vitamin C, which can relax small blood vessels, promote blood circulation, help prevent dizziness caused by hypertension, keep the brain flexible and prevent Alzheimer's Harmo's disease.
3. Amaranth contains volatile oil and capsaicin with pungent smell, which can dispel the peculiar smell in greasy and heavy dishes such as fishy smell, produce special aroma, and have strong bactericidal effect, which can stimulate the secretion of digestive juice and stimulate appetite. When the volatile capsaicin is excreted through sweat glands, respiratory tract and urinary system, it can also slightly stimulate the secretion of related glands, thus playing the role of sweating, expectorant and diuretic. It is one of the traditional Chinese medicines for treating colds.
4. Leek also has the functions of lowering blood fat, blood pressure and blood sugar. If eaten with mushrooms, it can promote blood circulation.