Where is the place of origin of lettuce? An introduction to its cultivation history
Lettuce is the common name for leaf lettuce, also known as goose lettuce, stem lettuce, and mai zai cai, among others. It is an annual or biennial herbaceous crop of the genus Lactuca in the Asteraceae family. According to leaf growth form, it can be divided into head lettuce, curly-leaf lettuce, and upright lettuce. It is rich in nutrients and can be eaten raw; it is crisp and refreshing with a slight sweetness. Now let us take a look at when lettuce was introduced to China!
When was lettuce introduced to China?
Lettuce originated along the Mediterranean coast of Europe and was domesticated from wild species. The ancient Greeks and Romans were the first to eat it. It was introduced to our country around the late Qing Dynasty, and is cultivated more extensively along the southeast coast of our country, especially in the suburbs of major cities and in the Guangdong and Guangxi regions. In recent years, as the cultivation area has expanded rapidly, it has gradually moved from hotels and restaurants onto the dining tables of ordinary people.
Is lettuce a genetically modified vegetable?
Lettuce is not a genetically modified vegetable. At present, apart from genetically modified soybeans and corn imported on a large scale, other genetically modified vegetables are uncommon. Although genetically modified tomatoes and other genetically modified vegetables were once approved in China, genetically modified tomatoes have basically been eliminated worldwide because their skins are too thick and their taste is poor.
What edible values does lettuce have?
Lettuce is rich in nutrients, containing large amounts of β carotene, antioxidants, vitamin B1, B6, vitamin E, and vitamin C, as well as large amounts of dietary fiber and trace elements such as magnesium, phosphorus, and calcium, and small amounts of iron, copper, and zinc. It can enhance the digestion and absorption of protein and fat, improve blood circulation in the gastrointestinal tract, and also protect the liver, promote bile formation, prevent bile stasis, and effectively prevent cholelithiasis and cholecystitis. In addition, lettuce can remove waste from the blood and has blood-disinfecting and diuretic effects.
Lettuce planting time and maturity time_Detailed explanation of planting methods and techniques
Plant profile: Lettuce, with aliases such as mai zai cai, goose lettuce, and stem lettuce, is recorded under the Asteraceae family. It is a common vegetable variety, and the plant is a foliage variety with high edible value. Lettuce has a long history in China and is mostly grown in the southeastern region of our country, where the cultivation area is relatively large. Its place of origin is the United States. For daily use, it can be eaten raw, stir-fried, blanched, and in various other ways. It has a crisp texture and often becomes a common seasonal vegetable on the dining table. What this article will introduce to you today is lettuce planting time, as well as lettuce maturity time, and its planting methods and techniques.
[Lettuce planting time and maturity time]
▎Planting time
Lettuce planting time: March, April, August
Lettuce planting can be divided into spring sowing and autumn sowing. As long as the seasons of extreme heat and severe cold are avoided, it can survive normally. Lettuce is generally sown for seedlings in January and February, and then field planting is completed in late April. It can be provided for seasonal consumption, and about one month later it can be harvested normally. The longest growth period is two months.
Lettuce grows extremely fast and has a relatively short growth cycle. The specific planting time needs to be distinguished according to different lettuce varieties, but the overall planting time range is March-April and July-August.
▎Maturity time
Lettuce maturity time: May, June, July, August, September.
You can mainly refer to the lettuce planting time. Lettuce has a relatively short growth time; under normal circumstances, it only needs a little more than a month before it can be harvested normally for eating, and lettuce has strong sprouting ability and can be harvested multiple times.
Secondly, the maturity time of lettuce will also be affected by the living environment. With long-term lack of light, the maturity time of lettuce will be delayed, while a long-day environment is more favorable for lettuce to mature. However, generally, lettuce under normal care will mature about 15 days after flowering.
[Lettuce planting methods and techniques]
▎Methods and steps
❶ Seed selection: There are many types of lettuce seeds. Currently, the more popular ones are flower-leaf lettuce, glass lettuce, and head lettuce.
❷ Seedbed: First prepare nutrient soil. Choose fertile sandy soil, mix it with organic fertilizer and ammonium sulfate, spread it evenly over the seedbed, water until it penetrates, and wait for sowing.
❸ Sowing: The sowing time is spring and autumn. When sowing, you can first mix the lettuce seeds with sandy soil, then evenly scatter them over the seedbed, and cover with about 0.5 cm of soil.
❹ Seedling raising: After successful sowing, the temperature needs to be controlled between 12-20°C, keep ventilation, and avoid direct sun exposure. When the seedlings grow 2-3 true leaves, they can be field planted.
❺ Field planting: When field planting lettuce, the seedlings should be lifted with soil, with spacing kept at about 4 cm. Then apply compound fertilizer and water afterward.
❻ Harvesting: For lettuce growth, sufficient water and fertilizer are enough. It can be harvested in at most two months. When harvesting, avoid damaging the roots.
Summary: The above mainly introduced lettuce planting time, as well as lettuce maturity time, and introduced lettuce planting methods for you. After reading the above, do you already have a more detailed understanding of lettuce? I hope it can be helpful to you.
Lettuce planting time and maturity time? Detailed explanation of planting methods and techniques
Lettuce, with aliases such as mai zai cai, goose lettuce, and stem lettuce, is recorded under the Asteraceae family. It is a common vegetable variety, and the plant is a foliage variety with high edible value. Lettuce has a long history in China and is mostly grown in the southeastern region of our country, where the cultivation area is relatively large. Its place of origin is the United States. For daily use, it can be eaten raw, stir-fried, blanched, and in various other ways. It has a crisp texture and often becomes a common seasonal vegetable on the dining table. So, lettuce planting time and maturity time? The detailed explanation of planting methods and techniques will be shared with everyone.
Lettuce planting time and maturity time:
Lettuce planting time
Lettuce planting time: March, April, August
Lettuce planting can be divided into spring sowing and autumn sowing. As long as the seasons of extreme heat and severe cold are avoided, it can survive normally. Lettuce is generally sown for seedlings in January and February, and then field planting is completed in late April. It can be provided for seasonal consumption, and about one month later it can be harvested normally. The longest growth period is two months.
Lettuce grows extremely fast and has a relatively short growth cycle. The specific planting time needs to be distinguished according to different lettuce varieties, but the overall planting time range is March-April and July-August.
Lettuce maturity time
Lettuce maturity time: May, June, July, August, September.
You can mainly refer to the lettuce planting time. Lettuce has a relatively short growth time; under normal circumstances, it only needs a little more than a month before it can be harvested normally for eating, and lettuce has strong sprouting ability and can be harvested multiple times.
Secondly, the maturity time of lettuce will also be affected by the living environment. With long-term lack of light, the maturity time of lettuce will be delayed, while a long-day environment is more favorable for lettuce to mature. However, generally, lettuce under normal care will mature about 15 days after flowering.
Lettuce planting methods and techniques
Methods and steps for planting lettuce
Seed selection: There are many types of lettuce seeds. Currently, the more popular ones are flower-leaf lettuce, glass lettuce, and head lettuce.
Seedbed: First prepare nutrient soil. Choose fertile sandy soil, mix it with organic fertilizer and ammonium sulfate, spread it evenly over the seedbed, water until it penetrates, and wait for sowing.
Sowing: The sowing time is spring and autumn. When sowing, you can first mix the lettuce seeds with sandy soil, then evenly scatter them over the seedbed, and cover with about 0.5 cm of soil.
Seedling raising: After successful sowing, the temperature needs to be controlled between 12-20°C, keep ventilation, and avoid direct sun exposure. When the seedlings grow 2-3 true leaves, they can be field planted.
Field planting: When field planting lettuce, the seedlings should be lifted with soil, with spacing kept at about 4 cm. Then apply compound fertilizer and water afterward.
Harvesting: For lettuce growth, sufficient water and fertilizer are enough. It can be harvested in at most two months. When harvesting, avoid damaging the roots.
Lettuce planting time and maturity time? The detailed explanation of planting methods and techniques is shared with everyone here. I hope this article is helpful to everyone, and I wish everyone good luck.