How much is the price of purple lettuce? How to grow? How? What are the effects and functions?

Purple leaf lettuce belongs to loose leaf lettuce from botanical classification. It is an one-or two-year-old herb of the genus Lactuca of Compositae, native to the Mediterranean coast, with leaves as the main edible part, suitable for both fresh and cooked food. So, how much is purple leaf lettuce per jin? How to plant it? How do you eat it? What are the effects and effects? It is understood that the price of purple leaf lettuce is 10 yuan per jin, the price will be different in different regions.

How to grow purple leaf lettuce?

Raising seedlings

1) sowing time: purple leaf lettuce can be cultivated at any time except in the hottest season.

2) selection of seedling breeding site: the seedling breeding site of annual production in Beijing area is open field and protected land for half a year. The seedlings of purple leaf lettuce are usually raised in the open field in April, May and September. Sun shading and rain prevention measures should be taken in June, July and August. From October to March of the following year, it should be carried out in the protected area.

3) sowing: planting 1 mu purple leaf lettuce requires 1215 square meters of seedbed, usually dry seed direct seeding. However, it is difficult for purple leaf lettuce to emerge in early summer and autumn, so it is best to accelerate germination and sow seeds. The sowing rate is 15g to 20g. Spring and autumn seedlings in the open field, such as fast emergence when sowing, can be covered with film mulch to increase temperature and preserve soil moisture, and then removed after emergence; summer seedlings should take measures of shading, cooling and rain prevention. Watering at the seedling stage, especially in plastic plates, should spray more water, one water a day in winter and spring and three times a day in summer. There is no need for topdressing at seedling stage. Temperature management should be paid attention to when raising seedlings in protected land, and the optimum temperature for germination is 18 ~ 20 ℃. When the room temperature is not enough in winter and spring, those who use solar greenhouse to raise seedlings should strive for more light during the day and cover with mulch to prevent cold and keep warm at night.

4) Seedling division: when sowing for about 10 days, the cotyledons are long, and the seedlings can be divided into two true leaves. The seedlings can be divided into ground seedlings or nutritious earthwork seedlings with a distance of 5 cm × 5 cm. The suitable temperature for seedling growth is 20 ℃ in daytime and 12 ℃ at night. It is necessary to cool down and train seedlings before planting in winter and spring. The seedlings were planted when they reached 4 or 5 leaves.

Colonization

The plots with fertile soil, more fertilizer in the previous crop and strong ability to conserve water and fertilizer should be selected. in summer, the soil with good drainage and the land with high irrigation capacity should be selected for cultivation. Apply organic fertilizer 30.4 cubic meters and compound fertilizer 50kg. Make more flat beds. Planting with dirt. The row spacing of the plant is 15 cm × 30 cm and is watered in time after planting.

Field management

The main results are as follows: 1. After watering slow seedlings, the watering times should be controlled according to the soil moisture and growth conditions. Generally, water should be watered for 5-7 days, the amount of water should be small, and the soil should be kept moist. After the formation of leaf balls, watering should be controlled to prevent uneven water from causing cracked balls and rotten hearts.

2. Topdressing is mainly based on base fertilizer, in the early stage of heading, nitrogen fertilizer is applied once with water to promote leaf growth, nitrogen, phosphorus and potassium compound fertilizer is better, 15-20 kg per mu in about 15 days, and when heart leaves begin to curl inward, compound fertilizer is applied again, about 20kg per mu. "Luoxiaowang" liquid fertilizer can also be used for foliar topdressing for 3 or 4 times.

3. The main diseases of pest control are downy mildew, soft rot, virus and so on, and the main pests are leaf miner, whitefly, aphid and so on. Comprehensive measures such as prevention of diseases and insect pests should be given priority to, and field management should be strengthened. chemical control of downy mildew should be 72% Klu, 600,800 times, and soft rot should be controlled with 72% agricultural streptomycin 3000 times. 2000 times imidacloprid is used to control aphids, and always pay attention to the interval between medication and safe picking period.

4. According to the needs of the market, the leaf ball is formed, and it can be harvested by pressing gently with the hand.

How do I eat purple leaf lettuce?

1. Egg & vegetable soup, tomato and lettuce

Ingredients: 100g tomato, 50g purple leaf lettuce, 1 egg.

Excipients: right amount of onion, 0.5 tablespoon of beef powder, right amount of salt.

Steps

Wash persimmons and cut lettuce into small pieces, beat eggs with a little salt, and cut green onions into chopped onions.

Boil water in the pot. After boiling, add persimmons.

After cooking the red soup, add lettuce, add a little beef powder and salt, pour in the egg, gently push with a spoon and turn off the heat.

What are the effects and effects of purple leaf lettuce?

1. Purple vegetables contain one of the most special substances-anthocyanins. Anthocyanins not only have strong antioxidant capacity, prevent hypertension and slow down liver dysfunction, but also have great effect on improving eyesight and preventing eye fatigue. Due to the unique nutritional composition of purple vegetables, its nutritional value is higher than that of ordinary green vegetables, and the market prospect is good, which is the development direction of vegetable varieties in the future.

two。 Purple leaf lettuce is rich in nutritional value, it contains anthocyanin, carotene, vitamin E, vitamin B1, B2, B6, but also rich in minerals, such as phosphorus, calcium, potassium, magnesium, etc., but also contains a small amount of copper, iron, zinc, selenium. The benefits to the human body are to aid digestion, stimulate the formation of bile, cool blood, promote blood circulation, diuresis, sedation, sleep, prevent the accumulation of waste in the intestines, and have anti-aging and anti-cancer functions. It can also be used as a potted plant of foliage flowers and placed on the balcony, which can be watched and eaten.

Time: 2019-03-19 Click: