Lettuce sowing is crucial, what are the measures before lettuce sowing?

In planting lettuce is after Qingming, this way is mostly seed seeding, and seedling planting is generally in the month of the solar calendar to start the seedling, and then covered with film, to grow two leaves after transplanting, basically in March and April can be eaten. Before planting, the seeds are soaked in water overnight, then filtered out and wrapped in sterile gauze. Place it in an environment of 18-20 degrees for germination, and when you see the buds start to germinate, you can plant.

Sprinkle the seed buds evenly on the surface of the soil, sprinkle a thin layer of soil on top, which can cover the seeds and reduce the seeds, if the wind blows, the seeds will be scattered unevenly, and the seeds will be wasted. When the seeds emerge, they will also be uneven, the thickness of the seedlings will be uneven, and the growth will not be neat. Then we need to thin the seedlings to ensure the healthy growth of lettuce, resulting in a large area of waste of seeds.

When sowing lettuce directly, the seed consumption is large, and lettuce seeds** are more expensive, and the cost of seeds will increase. On the other hand, when directly sowing seeds, the seedling thinning work also requires a large labor expenditure, and it is difficult to ensure the consistency of lettuce growth, and some of the vegetables cultivated are large, neither cold tolerant, nor heat resistant. The suitable growth temperature is 15 to 20 degrees Celsius, the seeds are resistant to low temperatures, and germination can be achieved at 4 degrees Celsius, and the growth period is 90 to 100 days.

Lettuce has a well-developed root system, strong drought tolerance, and is planted in fertile soil with deep soil layer with high yield and good quality.

Generally 15-20 is the most conducive to lettuce growth, so that lettuce will grow faster, and summer and winter are not suitable for outdoor sowing. If we have to choose to plant seeds in the summer, we should simply treat the seeds at low temperatures and avoid the seeds from sunlight when planting. Then water the seedbed thoroughly, and then sow the seeds after the water seeps down, and then cover the soil about centimeters, and the soil should not be too thick, otherwise it will cause uneven seedlings.

Finally, it can be covered with a thin layer of wheat straw or straw, drenched with sufficient water, to prevent the topsoil from drying out and cracking, so as to facilitate the emergence of seedlings.

In planting lettuce is after Qingming, most of this way is seed live broadcasting, and seedling planting is generally in the solar calendar to start seedlings, and then covered with film, to grow two leaves after transplanting, basically in March and April can be eaten. However, if the seedlings are transplanted by cultivation, the row spacing and plant spacing can be reasonably controlled, and then scientific management can be carried out to achieve a double harvest of appetite and economic value.

1. Land preparation: Before planting lettuce, the land should be prepared to ensure that the plot is soft and fertile, and the potted plants are prepared with suitable potting soil.

2. Sow seeds into the soil: After the soil is prepared, directly sprinkle lettuce seeds on the surface of the soil, cover the thin soil, and spray water to moisturize.

3. Later maintenance: lettuce seeds like light, to bask in the sun, find that the soil is dry and water in time, and the environment is suitable for germinating seedlings soon.

4. Seedling transplanting: lettuce seedlings can be transplanted when they grow 3 true leaves.

Lettuce is more delicate, both afraid of heat and cold, below 0 will be frozen, the lowest can tolerate -3, and the smaller the seedling, the worse the cold resistance. 4 or more began to germinate, the optimal temperature for seed germination was 15 20, and it was difficult to germinate above 30. Seedlings 10 20 grow best.

Lettuce does not have strict requirements for soil quality and is suitable for growing in slightly acidic sandy loam soil. It likes water but is not waterlogged, the humidity in the field is best kept between 65% and 80%, the humidity is too low to affect the growth and development of lettuce, and too high will induce a variety of diseases.

Lettuce requires more water, and it is not drought tolerant. The water should be kept properly in the juvenile stage, not too wet, to prevent the seedlings from aging and growing. At the time of the germination period, the rosette leaves begin to grow, properly control the water, in order to make the root system grow deep, to squat seedlings, lettuce is a semi-cold-tolerant leafy vegetable, like cold and humid climate, not tolerant to high temperature and heat.

Therefore, according to the growth requirements of lettuce for temperature, it can be planted in spring and autumn in North China and the Yangtze River Basin, and can be sown from October to February of the following year in South China, and harvested from November to April of the following year.

When planting lettuce, the land preparation requirements are fine, the base fertilizer is best to choose fully rotted farmhouse fertilizer, an acre of land needs 3000-3500 kg, plus 20-30 kg of ternary compound fertilizer, do furrow according to different seasons, soil quality and determine. Generally cultivated in spring and autumn, suitable for flat furrows, summer should do small high furrows, the growth rate of lettuce is very fast, its growth cycle is also quite short, open-air planting in spring and autumn is the majority, there are no too high requirements for soil and temperature, there are planting areas in the north and south, you can also plant in greenhouses, harvest out-of-season lettuce.

To plant lettuce, the first thing is to cultivate seedlings, do a good job in seedbed management, and finally carry out planting management. The cultivated seedbed soil is generally composed of half garden soil and half humus soil mixed with fertilizer. The seedbed soil must be finely leveled, and at the same time, each cubic soil should be mixed with urea, and it should be sprayed with a small watering can.

Watering should maintain the plant's demand for water, but not excessive, and control the humidity not too much, in order to prevent disease. Lettuce topdressing should be mainly farmhouse fertilizer, and it can also be combined with compound fertilizer.

Before planting lettuce, you need to take care of the soil first, loosen the soil first, fertilize the soil after the soil is fluffy, and cultivate the seedlings at the same time, and wait for the seedlings to take root before planting.

Before lettuce planting, it is necessary to choose the right variety, loosen the soil, prepare the land, water it properly, and dig pits.

You must choose a good land, and you must choose a well-drained land, the land must be ventilated, and you must be able to ensure that you can get the sun. And the temperature must be guaranteed to be around 10 to 20, not too much watering, and the humidity should be kept at about 65% to 80%.

The work that needs to be done before planting is to choose an acidic soil, so that it will be suitable for its growth, and when the seedlings are young, they must be watered more, but not too wet, and try to give them some base fertilizer or farm fertilizer when applying fertilizer.

Apply some fertilizer, because vegetables need to be fertilized to grow well, so it is said to fertilize.

You can use lettuce of good quality to grow, and then fertilize it from time to time, but also ensure sufficient light.

First of all, at the time of sowing, generally more than 15, the seeds can germinate and emerge. Some friends are directly sown, and some are seedlings first and then transplanted according to the appropriate plant spacing. Generally speaking, the land is prepared first.

I think that if the emergence of lettuce is very poor, if we want to improve this phenomenon more effectively, we should find out the cause in time, use high-quality fertilizer, fertilize it, and water it every day.

Lettuce is not too demanding for a long time, as long as it is not done in particularly hot or cold weather, it can grow well.

Lettuce likes a cold environment, neither cold tolerant, nor heat tolerant, the suitable temperature for growth is 15 -20, and the growth period is 90-100 days. The seeds are more resistant to low temperatures and germinate at 4 o'clock. The suitable temperature for germination is 18-22, and almost no germination when it is higher than 30.

During the growth period of the plant, it likes a cool climate, and the most suitable growth is 15-20, with high yield and excellent quality; Consistently higher than 25, poor growth, coarse and old, slightly bitter leaves. However, it is also quite hardy, and even short-term sub-zero temperatures do not hinder growth.

Lettuce management: 1. Planting and raising seedlings.

In order to make the sowing even, a small amount of fine sand can be mixed into the seeds during sowing, covered with centimeter-thick tidal soil after sowing, and covered with plastic film to moisturize. The sowing rate per mu is 30-50 grams. When the seedlings begin to be unearthed, the furrow mulch should be uncovered in time to prevent growth.

The temperature of the seedbed is controlled at 18 -20 during the day and 12 -14 at night.

Pay attention to ventilation and ventilation, and shade in case of strong light exposure. When the seedlings grow to 2-3 true leaves, the seedlings are divided according to the plant row spacing of 6-8 cm, and can be planted when they grow to 4-5 true leaves, and the seedling stage is generally not short of water and watering. In order to prevent diseases at the seedling stage, 1-2 times of 600 times 75% chlorothalonil liquid can be sprayed.

2. Scientific fertilization.

Lettuce requires clayey loam soil rich in organic matter, strong water retention and fertility, lettuce likes slightly acidic bridging and temperament, and the soil pH value is 5-7. For every 1,000 kilograms of lettuce produced, kilograms of nitrogen, phosphorus and potassium need to be absorbed. Among them, lettuce needs more potassium.

During the growing season, nitrogen, phosphorus, and potassium fertilizers are required to be used together.

3. Careful planting.

The seedbed is irrigated the day before planting to make the seedlings moist, and the seedlings are raised the next day with as much soil as possible to reduce root damage. When planting, first ditch on the furrow surface, ditch depth 4-6 cm, 70 cm furrow surface planting 3 rows, after ditching according to 25 kg per mu to apply ternary compound fertilizer after irrigation, water infiltration according to the plant spacing of 24 cm seedlings soil sealing ditch, the furrow surface raked flat, covered with mulch, and lead seedlings out of the film.

4. Post-planting management.

Lettuce likes moisture, and sufficient water is required throughout the growth period**. After 5-7 days of planting, water the seedlings with 1 time. After watering the seedlings, the plots that were not covered with plastic film were cultivated twice and loosened for weeding.

After watering 3-4 times, combined with watering, nitrogen and phosphorus fertilizer are applied in stages, and 15-20 kg per mu is applied. Stop watering before harvest to facilitate storage and transportation.

5. Scientific harvesting.

Non-bulbling lettuce can be harvested according to the market** camera. It is better to harvest lettuce after the leaf bulb is tight, but too early will affect the yield, and too late will cause the stem in the leaf bulb to elongate, and the leaf bulb will become loose and the quality will decrease.

In the middle and lower reaches of the Yangtze River, spring sowing is from late January to late February, with sowing in March and harvesting in May. Autumn sowing is generally concentrated in August and September, and harvest is in November and December. Spring sowing is generally in February and April, and May and June can be harvested, and autumn sowing can be started at the end of August, and can be harvested in October 9, due to the different characteristics of different varieties of lettuce, when choosing the sowing time, it is necessary to understand the purchase of lettuce seeds, and then combine the sowing time for planting.

Spring and summer are suitable for sowing loose leaf lettuce (such as cream lettuce and coleus lettuce). Lettuce is sown in two seasons, one in summer and the other from September to February, and harvested from November to April. Northwest and Northeast Alpine Regions:

Sow in the spring and harvest in the summer. Spring sowing is in March, or the end of the Yuan Dynasty to the beginning of February, and transplanting in March. Lettuce seeds are small, only 25 grams of seeds are needed for an acre of land.

The suitable germination temperature of the seeds is 15-20, and the emergence of seedlings is slow in early spring when the temperature is low.

Temperatures are high in southern China, and autumn planting begins in September and can be harvested by the end of April. If lettuce is cultivated in greenhouses and shaded in summer, in order to harvest in advance, small arch seedlings and open field cultivation can be used, or it can be sown when the temperature reaches about 5, and then transplanted after a month. It is best to raise seedlings on sandy loam soil, which can improve the seedling emergence rate, and farmhouse fertilizer is the main base fertilizer.

Lettuce seeds have high requirements for the seedbed, because lettuce seeds are small, so not only fine, but also uniform bed soil. It is necessary to evenly spread a certain amount of fertilizer prepared in the soil to lay a good foundation for future growth.

The above is a detailed interpretation of the problem, I hope it will help you, if you have any questions, you can leave me a message in the comment area, you can comment with me, if there is something wrong, you can also interact with me more, if you like the author, you can also follow me, your like is the biggest help to me, thank you.

It is better to plant in May and June, lettuce planting needs a warm environment, and planting can grow a little better at this time. Try to choose a sunny morning when planting, turn the soil before planting, fertilize the soil appropriately, and water it after planting, so that the growth rate can be improved.

It is better to sow seeds in spring, you can choose to sow in April, you should choose high-quality seeds, and you should also choose fertile soil; Before sowing, we must do a good job of seed seedling, we must choose the right harvest time, if it is planted in April, then it can be harvested in May or June, we must loosen the soil in time, and we should also do a good job of fertilizing and watering.

It is very suitable to plant in March or April, to choose fertile soil, to choose healthy and full seeds, to do a good job in seed seedling, but also to pay attention to the density of planting, should be grasped at about 15 cm, to water and fertilize in time, to choose the right harvest time is generally from May to June.

It's better in August. Don't let the outside temperature be too low, it is best to keep it at about 20 degrees, water in time to ensure that the soil is sufficiently moist, and also pay attention to the porosity of the soil.