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Vegetables, also known as leaf lettuce, are native to Europe, and in recent years, with the prosperity of hot pot, the planting area of lettuce has also been expanding, entering thousands of households. What are the varieties of lettuce?
There are three types of lettuce: bulb lettuce, wrinkled leaf lettuce, and erect lettuce. Among them, lettuce and cabbage are similar in appearance, and the terminal leaves form leaf balls, which are round or oblate spherical. The edible part is leaf bulb, and the texture is fresh and tender.
According to the different leaf textures, it is divided into crisp-leaved lettuce and cotton-leaf lettuce.
The leaves of the brittle-leaved bulb lettuce are thicker, the leaf bulbs are large and firm, the growth period is longer, and the yield is high. The leaves are crisp and tender, and the flavor is good. It is the most popular among consumers and is currently the most planted variety. It is not easy to sprout, and it is difficult to collect seeds.
Cotton-leaf bulb lettuce, also known as soft-leaf bulb lettuce, has thin leaves, small leaf bulbs, short growth period and low yield, soft leaf texture, and slightly bitter taste. It is easy to extract and collect seeds.
Wrinkled leaf lettuce, also known as loose leaf lettuce, is mainly characterized by non-balling. Basal leaves, the leaves are oblong, clustered like flowers, the petioles are long, the leaf margins are wavy and notched, and the leaf surface is wrinkled. There are many kinds of leaf colors, such as green, yellow-green, light purple-red, and dark purple.
At present, due to marketing problems, the planting area is not as good as lettuce.
Erectus lettuce, also known as long-leaf lettuce, does not bulb like wrinkled leaf lettuce, but the heart leaves are rolled into a cylindrical shape. The leaves are long and narrow, growing upright, the whole margin of the leaves may be serrate, the leaves are thick and fleshy, and the taste is slightly bitter. The domestic planting amount is small, just ** hotels and restaurants.
Lettuce is sweet and cool in nature, has high nutritional value, can play a role in clearing heat and refreshing, analgesia and hypnosis in medicinal use, and because of its unique flavor and taste, it is very popular with consumers, and many residents in the north are directly raw food for lettuce.
The above is some little knowledge about lettuce, the unique taste and flavor of lettuce, it can be said to be a must when eating hot pot, friends who have not eaten lettuce can also buy lettuce to eat at home, the taste is good.
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Lettuce can be divided into three types: bulb lettuce, wrinkled leaf lettuce, and erect lettuce, all of which are suitable for raw consumption.
Lettuce is the common name of leaf lettuce, also known as goose cabbage, mark cabbage, lettuce cabbage, belongs to the Asteraceae lettuce, lettuce leaves are obovate, densely packed into cabbage-like leaf balls, can be eaten raw, crisp and tender, slightly sweet taste.
The precautions for eating raw lettuce are as follows:
1. The current season of lettuce is in summer, and summer is a rainy season, the temperature is relatively high, and lettuce is easy to be infected with a large number of parasites during the growth process, so when eating lettuce raw, the lettuce must be cleaned to avoid being infected with parasites.
2. Lettuce is a kind of vegetable that is prone to insects, so it will be sprayed with pesticides in the production process, so it should be washed repeatedly when eating raw lettuce.
3. Lettuce is a cold vegetable, and excessive consumption is easy to aggravate the peristalsis of the gastrointestinal tract of the human body, which may increase the burden of the gastrointestinal tract of the human body, thereby causing physical discomfort and causing harm to the health of the human body, so pay attention to the amount of consumption when eating raw lettuce.
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There are three types of lettuce: bulb lettuce, wrinkled leaf lettuce, and erect lettuce.
Lettuce (Lactuca sativa L.). var. ramosa hort.
1] The common name of leaf lettuce, also known as goose cabbage, mark cabbage, lettuce cabbage, belongs to the genus Lettuce of the Asteraceae family. It is an annual or biennial herbaceous crop, the leaves are long obovate, densely packed into cabbage-like leaf balls, which can be eaten raw, crisp and refreshing, slightly sweet.
Growth habit: lettuce likes a cold environment, neither cold tolerant, nor heat resistant, the suitable temperature for growth is 15 -20, and the growth period is 90-100 days. The seeds are more resistant to low temperatures and germinate at 4 o'clock. The suitable temperature for germination is 18-22, and almost no germination when it is higher than 30.
During the growth period of the plant, it likes a cool climate, and the most suitable growth is 15-20, with high yield and excellent quality; Consistently higher than 25, poor growth, coarse and old, slightly bitter leaves. However, it is also quite hardy, and even short-term sub-zero temperatures do not hinder growth.
Lettuce has a well-developed root system, wax on the leaf surface, and is quite drought tolerant, but it is cultivated on fertile and moist soil, with high yield and good quality.
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<> lettuce is mainly divided into three types: bulb lettuce, wrinkled leaf lettuce, and erect lettuce. Bulb lettuce: similar to the shape of cabbage, its apical leaves form leaf balls, which are round or oblate spherical, and the edible part is leaf balls, which have a fresh and tender taste.
Wrinkled leaf lettuce: Also known as loose leaf lettuce, the leaves are oblong-oval, clustered like flowers, with long petioles and wavy leaf margins. Lettuce:
Also known as long-leaf lettuce, it does not form balls like wrinkled leaf lettuce, but the heart leaves will be rolled into a cylindrical shape.
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