Poor seedling emergence when growing lettuce, how can it be effectively improved?

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.

How to soak lettuce seeds to produce seedlings, and the emergence rate is high.

There are three ways to grow lettuce at home:

1. In fact, lettuce can be planted all year round, as long as the temperature is below 20 degrees, it can be sown at any time, and if the temperature is high, you want to plant lettuce, you can also choose some heat-resistant lettuce varieties to plant, the general lettuce is very suitable for sowing in autumn, so that it will continue to grow in winter.

There are many types of lettuce, some are smaller, some can form balls, some have larger leaves, some have a better taste, and some purple-leaved lettuce, and the planting methods are similar.

2. As for the choice of lettuce planting tools, as long as it is a container that can be loaded into the soil, it can be planted, pay attention to flower pots or other containers, foam boxes, empty oil drums, and there must be drainage holes, otherwise the growth is not good, and it is easy to yellow leaves, because the potting soil is easy to accumulate water.

It is recommended to use some plastic long pots, so that you can plant a lot of seedlings, and it is easy to place, plant a few pots on the balcony, more neat, clean and beautiful. You can use ordinary garden soil for potting soil, and if you don't want to buy soil back, you can also mix soil yourself.

It is to add some fertile humus to the soil, or add some well-rotted organic fertilizer, chicken manure, sheep manure, etc., to increase the fertility of the soil, and continue to provide nutrients for lettuce seedlings.

3. Before sowing, make the potting soil looser, softer, pinch the potting soil by hand, it will not form a clump, if the seeds are sprinkled unevenly, you can mix them with the sand, sprinkle them in the pot, sow them for the first time, try to sprinkle a little less seeds, and be even.

Then water thoroughly and put it on the balcony in a well-lit, ventilated place with a temperature of about 20 degrees, and the germination rate will be very fast. After germination, when three leaves generally grow, if the seedlings are too many and too dense, you can pull out some, or wait until the seedlings grow up again, you can transplant some seedlings.

The transplanted lettuce seedlings will grow better, and the transplanted and untransplanted seedlings are completely different, and the transplanted lettuce will grow particularly lush and the leaves will be larger. In short, the spacing between seedlings should not be too small, otherwise they will not get enough nutrients and sunlight, and the growth will be poor.

After germination and seedling, it is necessary to increase the light, after growing up, it is necessary to supplement some fertilizer, which must be fertilized, you can pour some cake fertilizer water, or sheep manure soaked in water, watered in the pot soil, there is really no organic fertilizer, you can give some compound fertilizer or chemical fertilizer, no fertilizer must not grow lush, and at the same time watering should be timely, the potting soil is too dry, and the lettuce leaves are not watery enough.

Only sufficient fertilizer and water and light can make the leaves more delicious and taste better. Lettuce is very easy to grow, you will know if you have planted it once, and the balcony has become a world of lettuce, and it has become a beautiful and vibrant little vegetable garden, and you can eat the freshest lettuce.

Summary. 1.Choose varieties with strong disease resistance and strong growth, and now there are three popular varieties of mosaic lettuce, glass lettuce, and bulb lettuce on the market, and you can choose one to plant at random.

1.Select varieties with strong disease resistance and strong growth, and now there are three varieties of lettuce that are popular on the market, such as lettuce, glass lettuce, and ball lettuce, and you can randomly select tung base and a planting.

2.Seedling stage: keep the soil moist, not dry, and keep the soil permeable. 2 3 true leaf time seedlings, plant spacing 5 8 cm.

2.Seedling stage: keep the soil moist, not dry, and keep the soil permeable. 2 3 true leaf time seedlings, plant spacing 5 8 cm.

3.Transplanting: When it grows to 5 or 6 true leaves, move the seedlings, water them thoroughly before moving, and move them to a large pot with the soil on the roots.

4.Planting; The seeds are evenly sown in the soil, covered with centimeter-thick tidal soil, and covered with plastic film to moisturize. Extend;

When planting the body, we must avoid the hot summer and cold winter, if you want to plant in winter, you must choose to plant in the greenhouse, so we can now eat lettuce in winter, summer is relatively hot, if you plant lettuce, you must pay attention to avoid strong light, filial piety can make lettuce grow better. Generally, lettuce is planted in spring and autumn, and the temperature in these two seasons is relatively mild, so it is also more suitable for growing lettuce. The growth cycle of lettuce is relatively short, generally about a month can be harvested, spring sowing, generally choose in March and April.

In autumn, it can be planted in July and August.

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.

Lettuce seeds are soaked and germinated before sowing, and seedlings emerge fastest after planting.

The method of rapid germination of lettuce seeds is to soak the seeds in the cavity of water with clear water, soak the seeds with full particles and healthy in warm water at 25-30 degrees, wait for 7-8 hours and then drain them, and put them in an environment of 15-20 degrees for germination, and sow seeds when the seed skin exposes the micro-buds. Lettuce can be germinated with plant hormones, either by placing the seeds in a 100 ppm cytokine solution and soaking them for 2-5 minutes, or by soaking them in a 100 ppm gibberellin solution for three hours, and then wrapping them in a damp cloth for germination.

Lettuce is suitable for planting in the deep soil layer, fertile, convenient drainage and irrigation of sandy loam soil, deep ploughing depth of about 20 cm, break the clods, apply organic fertilizer after exposure to the sun and maturation, mix evenly and rake finely leveling, and water enough water to keep the soil moist. Sow seeds by sowing, cover a layer of 3-5 cm of moist soil on the surface, cover the soil surface with transparent mulch, play the role of heat preservation and moisture retention, and wait until about 3-5 days to grow seedlings.

Lettuce field management

Lettuce planting about 7 days after watering a slow seedling water, watering combined with weeding and loosening soil 2 times, weeding to reduce nutrient loss, loosen the soil to increase the air permeability of the soil, conducive to crop root growth, watering the use of diluted nitrogen and phosphorus fertilizer to provide nutrients, 7-10 days before harvest stop watering. Generally, lettuce has more soft rot during the growth period, and it is best to clean up the impurities on the soil from time to time, and then disinfect with a small amount of potassium permanganate to avoid the production of germs.

Lettuce in the growth period, prefer a cold climate, the general temperature control at 15 20 is the best, hot time can be appropriate shade, but not too long, short-term below 0 degrees can also grow normally. Lettuce must keep the soil moist throughout the process, it is best to wet it when it is dry, generally watered once in the morning and evening, apply thin nitrogen fertilizer every 30 to 40 days, and apply it along the leaf stem.

The shrunken phenomenon of lettuce seedlings after transplanting is because the root system of the lettuce is damaged, resulting in lettuce water loss, and the seedlings will be fine after a few days.

Lettuce transplanting: 1. Try to transplant when three leaves, too large survival rate is low and the seedling return period is long, too large should be pruned to remove most of the leaves, leaving one.

2. Choose the afternoon transplanting when the sun is not strong, and after a night of cultivation after transplanting, the time for returning to the seedlings can be shortened.

3. When transplanting, take the root soil, and the operation action should be light to prevent the root system from being broken and increase the survival rate. After transplanting, it is watered thoroughly, and it can grow normally in three days.

It is also normal for the seedlings of this lettuce to wilt after transplanting, because if it is detached from water and soil, the lettuce will wilt immediately, so you should water it first and let him take root immediately.

It is normal for lettuce seedlings to shrink after transplanting, because transplanting all kinds of vegetables will occur this phenomenon, and it takes a process for them to return to seedlings, about 3 to 5 days.

After transplanting, it is normal for the plant to be partially tailed, because it destroys its growth structure and root clods, and the plant itself is affected by the outside world. He will use his own moisture to defend himself. As long as it's not rotten. Slow seedlings will grow normally in a few days.