Knotted lettuce
The first point is the method of sowing seedlings
Lettuce belongs to the cold and cool climate, can be cultivated all year round in the south, the most suitable sowing time in the spring and autumn. Lettuce growth cycle is very short, but two months can be harvested, before sowing must seize the opportunity of sunny days, in advance to dig deep sun dry white seedlings, the use of sunlight to kill the bacteria and eggs contained in the soil. Then add an appropriate amount of dried animal manure and grass ash, spread evenly into the nursery field, stir the soil, feces, grass and wood ash until finely chopped and leveled, water once permeable until the soil is moist, and then spread the seeds evenly into the soil. There is a layer of straw covered with a layer of dry straw, during the nursery period to keep dry and wet, about 3 or 4 days of seedlings, remove the hay after the emergence of seedlings, water every 2-3 days, 5 leaves can be transplanted and colonized.
Seedling
The second point is the requirements for land preparation
Lettuce has a shallow root system, weak absorption capacity, and high soil requirements, so when selecting land, it is necessary to choose sandy soil with high and flat terrain, convenient drainage and irrigation, sufficient fertility and strong permeability. Before colonization, it must be turned over in advance, and the sunning is to kill the original pathogens contained in the soil, reduce the occurrence of germs, and the land after ploughing is conducive to the rooting and development of crops in the future. A few days before colonization, plantar fertilizer should be applied, more than 3,000 kilograms of decomposed farm manure and 50 kilograms of nitrogen, phosphorus and potassium compound fertilizer should be applied per mu, and the fertilizer and soil should be evenly beaten and finely crushed into flat furrows, and the length and width can be determined according to the terrain.
The third point is the density of lettuce colonization
Lettuce in the transplanting and colonization, must be rooted with soil, lightly put, generally open small hole colonization, lettuce leaves are very crisp and tender, colonization density must not be too dense, too dense then can not reach ventilation and light in the future, it is easy to rot leaves, rotten roots phenomenon occurs. Therefore, the colonization density plant spacing is 20 cm, the row spacing is 30 cm, and the root water is watered once a day after colonization in dry weather, until the growth is stable and then reduce the number of watering.
Colonization
The fourth point is water and fertilizer management
Lettuce has shallow roots, large leaves, poor absorption capacity, and should often be watered during the growth and development period to ensure sufficient moisture and moist soil, and water every 3-5 days. For topdressing, due to the short growth cycle of lettuce, in the case of foot-basal fertilizer, only one fertilizer is required in the later stage, and one nitrogen fertilizer and potassium fertilizer are chased before the ball is wrapped( nitrogen fertilizer is 10 kg, potassium sulfate compound fertilizer is 20 kg" is chased. If there is no bottom fertilizer, it should be applied twice, the first growth is stable and then chase "nitrogen fertilizer 10 kg, compound fertilizer 5 kg", the second packet before the chase again, mixed with water water. For farmers with less planting, there is enough decomposed manure at home, and the manure can be watered every 5 days, and the effect is the same.
High yield dish
Conclusion; the above points are good points about cultivating lettuce, as long as it is reasonably densely planted, the soil is turned over, and the water and fertilizer work is done, you can also grow large and emerald green lettuce. This article is for reference only, if you can, please like and comment. Thanks for reading!