Introduction to the origin and cultivation history of lettuce

Lettuce is a common name for leaf lettuce, also known as goose lettuce, lettuce, shipping lettuce, etc., is an annual or biennial herbaceous crop of Compositae lettuce, according to the growth form of leaves can be divided into heading lettuce, wrinkled leaf lettuce and upright lettuce, nutritious, can be eaten raw, crisp and refreshing, slightly sweet, let's take a look at when lettuce was introduced into China!

When will lettuce be introduced into China?

Lettuce originated from the Euro-Mediterranean coast and was domesticated from wild species. The ancient Greeks and Romans ate it first, and it was introduced into China in the late Qing Dynasty. It was widely cultivated along the southeast coast of China, especially in the suburbs of big cities and in Guangdong and Guangzhou. In recent years, with the rapid expansion of the cultivated area, it has gradually entered the dining table of ordinary people from hotels and restaurants.

Is lettuce genetically modified vegetables?

Lettuce is not a genetically modified vegetable. At present, in addition to large-scale imports of GM soybeans and corn, other GM vegetables are not common. Although genetically modified tomatoes and other genetically modified vegetables have been approved in China, they have been basically eliminated around the world because of their thick skin and poor taste.

What is the edible value of lettuce?

Lettuce is rich in nutrition, containing a lot of β-carotene, antioxidants, vitamin B1, B6, vitamin E, vitamin C, as well as a large number of dietary cellulose and trace elements such as magnesium, phosphorus, calcium and a small amount of iron, copper and zinc. it can enhance the digestion and absorption of protein and fat, improve gastrointestinal blood circulation, protect the liver, promote bile formation, prevent cholestasis, and effectively prevent cholelithiasis and cholecystitis. In addition, lettuce can remove rubbish in the blood and has the effect of blood disinfection and diuresis.

Lettuce planting time and ripening time _ planting methods and techniques

Plant materials: lettuce, alias as mai Tsai, goose lettuce, lettuce, etc., recorded in the Compositae, belongs to daily vegetable varieties, plants are foliage varieties, high edible value. Lettuce has a long history in China, mostly planted in southeastern China, and the cultivation area is large, the country of origin is the United States, daily use can choose raw food, stir-fried, hot cooking and other kinds of, crisp taste, mostly become a common vegetable on the table. What this article would like to introduce to you today is the planting time of lettuce, as well as the ripening time of lettuce, and its planting methods and techniques.

[planting time and ripening time of lettuce]

▎ planting time

Lettuce planting time: March, April, August

The cultivation of lettuce can be divided into spring sowing and autumn sowing, which can survive normally to avoid the hot and cold seasons. Lettuce is generally chosen in January or February, that is, raising seedlings, and later in late April, the planting is completed and can be used for seasonal consumption. After about a month, it can be harvested normally, and the longest growth period is two months.

The growth rate of lettuce is very fast, and the growth cycle is relatively short. The specific planting time needs to be distinguished according to different varieties of lettuce, but the overall planting time range is from March to April and from July to August.

▎ maturity time

The ripening time of lettuce is May, June, July, August and September.

We can mainly refer to the planting time of lettuce, the growth time of lettuce is relatively short, in general, it only takes more than a month to harvest and eat normally, and the germination of lettuce is strong and can be harvested many times.

Secondly, the ripening time of lettuce will also be affected by the living environment. If there is a long-term lack of light, the mature time of lettuce will swallow the throat, while a long-sunshine environment is more conducive to lettuce ripening, but lettuce that is normally maintained will mature about 15 days after flowering.

[lettuce planting method and technology]

▎ method steps

❶ seed selection: lettuce seeds are divided into more, now the more popular are mosaic lettuce, glass lettuce, heading lettuce three kinds.

❷ seedbed: first prepare the nutritious soil, choose fertile sandy soil, mix organic fertilizer and ammonium sulfate, smooth the seedbed, water and permeate, and wait for sowing.

❸ sowing: sowing time is spring and autumn, when sowing, you can first mix sandy soil in lettuce seeds, and then evenly sprinkle on the seedbed, covering soil about 0.5cm.

❹ seedlings: after successful sowing, the temperature needs to be controlled between 12-20 degrees Celsius, keep ventilated, avoid exposure, seedlings grow out of 2-3 true leaves, can be planted.

❺ planting: lettuce colonization, seedlings need to bring soil, the spacing is maintained at about 4 cm, after the application of compound fertilizer, and then watering.

❻ harvest: the growth of lettuce, enough water and fertilizer, at most two months can be harvested, harvest at the same time, should avoid damage to the roots.

Conclusion: the above mainly introduces the planting time of lettuce and the ripening time of lettuce, and introduces you the planting method of lettuce. Through the reading above, do you have a more detailed understanding of lettuce? I hope I can help you.

When lettuce is planted and when it is ripe? Detailed explanation of planting methods and techniques

Lettuce, also known as mai Tsai, goose lettuce, lettuce, etc., recorded in the Compositae, belongs to daily vegetable varieties, plant is foliage varieties, high edible value. Lettuce has a long history in China, mostly planted in southeastern China, and the cultivation area is large, the country of origin is the United States, daily use can choose raw food, stir-fried, hot cooking and other kinds of, crisp taste, mostly become a common vegetable on the table. So the planting time and ripening time of lettuce? I would like to share with you the details of the planting methods and techniques.

Planting time and ripening time of lettuce:

Lettuce planting time

Lettuce planting time: March, April, August

The cultivation of lettuce can be divided into spring sowing and autumn sowing, which can survive normally to avoid the hot and cold seasons. Lettuce is generally chosen in January or February, that is, raising seedlings, and later in late April, the planting is completed and can be used for seasonal consumption. After about a month, it can be harvested normally, and the longest growth period is two months.

The growth rate of lettuce is very fast, and the growth cycle is relatively short. The specific planting time needs to be distinguished according to different varieties of lettuce, but the overall planting time range is from March to April and from July to August.

Lettuce ripening time

The ripening time of lettuce is May, June, July, August and September.

We can mainly refer to the planting time of lettuce, the growth time of lettuce is relatively short, in general, it only takes more than a month to harvest and eat normally, and the germination of lettuce is strong and can be harvested many times.

Secondly, the ripening time of lettuce will also be affected by the living environment. If there is a long-term lack of light, the mature time of lettuce will swallow the throat, while a long-sunshine environment is more conducive to lettuce ripening, but lettuce that is normally maintained will mature about 15 days after flowering.

Planting methods and techniques of lettuce

Methods and steps of lettuce planting

Seed selection: lettuce seeds are divided into more, now the more popular are mosaic lettuce, glass lettuce, heading lettuce three kinds.

Seedbed: first prepare the nutritious soil, choose fertile sandy soil, mix organic fertilizer and ammonium sulfate, smooth the seedbed, water and permeate, and wait for sowing.

Sowing: the sowing time is spring and autumn. When sowing, you can first mix the sandy soil in the lettuce seeds, and then sprinkle evenly on the seedbed, covering the soil about 0.5 cm.

Seedling: after successful sowing, the temperature needs to be controlled between 12-20 degrees Celsius, keep ventilated, avoid exposure, seedlings grow out of 2-3 true leaves, can be planted.

Planting: lettuce planting, when the seedlings need to bring soil, the spacing is maintained at about 4 cm, after the application of compound fertilizer, and then watering.

Harvest: the growth of lettuce, enough water and fertilizer, at most two months can be harvested, harvest at the same time, should avoid damage to the roots.

When lettuce is planted and when it is ripe? This is the end of the detailed explanation of planting methods and techniques. I hope this article will be helpful to you. Good luck.