Lettuce cultivation methods and precautions

1. Maintenance methods

1. Substrate: Lettuce will grow better if planted in slightly acidic soil. You should choose well-drained and loose soil. Its roots are shallow and its absorption capacity is relatively weak, so sandy loam can be used for planting.

2. Light: Lettuce is a plant that likes cool weather and cannot tolerate high temperatures. However, it also needs sunlight and good ventilation. Long-term exposure to sunlight will cause it to grow too tall.

3. Temperature: The temperature during the breeding period can be maintained at around 15℃-20℃, and it needs to be cooled down when the temperature is too high.

4. Water: In the early stage of lettuce growth, watering should be neither dry nor wet, but in the later stage, sufficient water is required. Lack of water will cause the stems to age and taste bitter. Just wait until the soil is dry and then water them appropriately.

2. Breeding techniques

1. Sowing: Lettuce can be planted in spring. Place its seeds on the soil and cover it with a film.

2. Overwintering: Lettuce cannot tolerate low temperatures. If you grow it in winter, it is best to grow it in a greenhouse with fertilizer.

3. Problem diagnosis and treatment

1. Viral disease: When lettuce is infected, it will have mosaic leaves. It needs to be treated with 1000 times diluted 50% carbendazim, once every week, and a total of about 4 sprays are required.

2. Aphids: Use 20% virus A per pound of water and spray it in 500 pounds. Do not use it under direct sunlight. It should be sprayed after it cools down. The medicine can be used at any time on cloudy days.

IV. Other issues

1. Can it be planted in the ground: Yes, it can be planted in the ground. It has a wide adaptability and a wide planting range. Choose fertile land that can be drained and irrigated, and the temperature should be controlled at the most suitable temperature for lettuce growth.

2. Is it poisonous? Lettuce is not poisonous. It is a kind of vegetable, so it is not harmful to humans.