Tomato seedlings, found that the seedlings are unearthed, and the seedlings can only be removed from

Tomato seedlings are unearthed, and how many days can the seedlings be removed.

How long does it take for a tomato to go from seed to ripe and veraison, to picking?

Generally, the seedling period takes more than a month, flowering about 10 days after transplanting, and about 40 to 50 days after flowering and fruit set. The picking period of open field cultivation is about one month to one and a half months, the picking period of greenhouse cultivation limited growth type is about one month, and the infinite growth type depends on the cultivation mode, and the picking period ranges from 6 months to 3 years.

aThe period from seed sowing, germination to ear and fruit seed maturity is the growth and development cycle.

It is divided into four stages: germination stage, seedling stage, flowering and fruit setting stage and fruiting stage.

The germination period is from seed germination to the growth of two ** leaves, and the true leaf is revealed, which is generally 7-9 days.

The seedling stage is the seedling stage from the appearance of a true leaf to the appearance of large flower buds, and the seedlings generally need about 50 days at a suitable temperature, 60-80 days in the cold season, and about 40 days in the high temperature season.

b It takes 15-30 days during flowering and fruit setting, and it takes a short time for early maturing or high-temperature cultivation, and it is long for vice versa.

In the fruiting period, the fruit begins to expand 3-4 days after flowering and pollination, 7-20 days fast, expands to the limit after 30 days, and begins to color and reach maturity after 40-50 days.

It generally takes 4-6 months from sowing to harvesting, and the whole development process of tomato can be divided into four stages: germination stage, seedling stage, flowering and fruit setting period and fruiting period. Germination period: The process of the seed from germination to the heartbreaking of the first true leaf.

Seedling stage: from the first true leaf to the beginning of the big bud. Flowering and fruit setting period:

The stage from the large flower bud to the first spike of fruit sitting. Fruiting period: The period from the fruiting of the first inflorescence to the end of fruit harvest.

c Tomatoes are seasonal vegetables that belong to summer, therefore, tomatoes are fresh when eaten in summer, and tomatoes eaten in other seasons are mostly greenhouse products, which contain more or less ingredients, and are not suitable for excessive consumption, let alone raw eating. The tomatoes are ripe, completely red, and the flesh is soft, and it is the harvest period when they are processed into jam and left for seeding.

The seedling stage of tomato generally takes more than a month, it takes about 10 days to flower after transplanting, and it takes about 40 to 50 days for the fruit to ripen after flowering and fruit setting. The harvest period is about one month to one and a half months for open-field cultivation and about one month for greenhouse cultivation for finite-growth type, and the harvest period varies from 6 months to 3 years depending on the indefinite-growth cultivation mode.

Generally, the seedling period takes more than a month, and the flowers bloom about ten days after transplanting, and the fruits begin to ripen slowly about forty or fifty days after flowering. The harvest period is about a month or so.

The seedling raising time will be a little shorter, if the seeds are scattered directly on the ground and wait for them to grow, it will take a little longer to mature between a month and a half.

Summary. The epidermis of tomato seedlings is an important part of protecting plants, and if the epidermis is peeled off, tomato seedlings may be harmed, resulting in slow growth or even death. In addition, wrapping tomato seedlings in plastic wrap can affect their respiration and photosynthesis, which can also negatively affect their growth.

Therefore, it is not recommended to peel off the skin of tomato seedlings or wrap them in plastic wrap.

Will you die if you peel off the skin of a tomato seedling and wrap it in plastic wrap?

I'm sorry I don't understand, but can you elaborate on that?

The skin of tomato seedlings is an important part of protecting the plant, and if the skin is peeled off, the tomato seedlings may be injured by the hall, resulting in slow growth and even death. In addition, wrapping tomato seedlings in plastic wrap will affect their respiration and photosynthesis, and the same posture will have a negative impact on their growth. Therefore, it is not recommended to peel off the skin of tomato seedlings or wrap them in plastic wrap.

Greenhouse tomato planting and management technology.

1. Soil preparation and seedling raising.

Planting tomatoes requires deep ploughing to ensure that the depth of deep ploughing is about 20 cm, and then apply well-rotted farmhouse fertilizer and compound fertilizer, cover the greenhouse film before planting, do a good job of insecticidal work of the soil, and then lay an insect-proof net at the air outlet of the greenhouse. Spread the prepared tomato seeds evenly into the plot, cover with a layer of fine*, and pour an appropriate amount of water to promote the rapid emergence of tomatoes in greenhouses.

2. Seedling management.

Tomatoes in the slow seedling, the general temperature should be controlled at about 28, the night temperature can not be lower than 10, after the emergence of seedlings, timely replenishment of water, improve the humidity of the soil, keep the soil moist, ensure ventilation and light, avoid damage to the seedling roots, but also should do a good job of seedling work, improve the growth rate of strong seedlings.

3. Reasonable topdressing of water and fertilizer.

During the growth of tomato seedlings, potassium sulfate, urea and other fertilizers should be applied to improve the growth rate, while topdressing, attention should be paid to increasing water **, improving nutrient absorption, flowering and fruit period, the demand for fertilizer has increased significantly, at this time it is necessary to apply phosphate fertilizer and potassium fertilizer, water must be sufficient, promote fruit development, apply sufficient amount of potassium fertilizer and urea, can improve the yield of fruit.

4. Pest control.

Although tomatoes planted in greenhouses rarely occur pests and diseases, but when planting, once they occur, the difficulty of prevention and control is also very great, such as virus diseases, gray mold, aphids and other pests and diseases, virus diseases can be sprayed with 20% morpholinoguanidine hydrochloride copper for spraying control, gray mold can be sprayed with 50% Sukrin wettable powder for control, and aphids can be sprayed with 50% aphid-resistant aphids.

In the winter leisure time, many farmers have begun to raise seedlings, mainly to prepare for planting melons, fruits and vegetables in early spring. Raising seedlings by yourself, you can clearly know the growth of seedlings, the key is to save a lot of money. Some farmers say that raising their own seedlings saves money, but it is also risky.

Strong seedlings are the first step to high yield, without mastering the skills of raising seedlings, and the weather conditions in winter are not good, raising seedlings is not a simple matter.

Tomato seedlings are very simple to say, soak the seeds in warm water, wait for seven or eight hours, let the seeds absorb water and expand, then wrap them and put them in the germination box, and then put them in the hole tray after they are exposed. These are routine sowing steps, and the management after the seeds grow true leaves is the focus, such as the regulation of temperature and humidity, and the prevention and control of diseases, which can only meet the standards of strong seedlings.

1. Control the temperature.

When the temperature is suitable, it generally takes more than 30 days for tomato seedlings to grow, but in winter, the temperature is relatively low and the light is less, and it takes almost 50 days from sowing to growing four leaves. Farmers should determine when to raise seedlings according to their transplanting time, and the seedlings should not be too vigorous.

When raising seedlings in winter, there will be continuous haze weather, observe the temperature in the shed, when tomato seedlings, the temperature at night is not less than 10, and the temperature during the day is not less than 20. When the temperature is too low, it is necessary to find ways to increase the temperature, such as building two membranes, laying ground temperature lines and other heating methods. When the light is low, turn on the fill light in time.

2. Prevention and control of diseases.

Many sheds will encounter such a situation, even cloudy weather, the temperature is maintained, but the humidity is up. The outside of the greenhouse is foggy, and there is a second film inside, so the moisture cannot be discharged, which is easy to cause diseases. Among them, cataplexy and blight are both high-humidity diseases, which have a great impact on the growth of tomato seedlings.

Disease should be prevented before it occurs, and it can be sprayed together with foliar fertilizer. 30 kg of water, 5 ml of fludioxonil, 15 ml of methoxyl, about 10 days between each spraying, can also be carried out together with fertilization, such as urea, potassium dihydrogen phosphate, boron and other fertilizers.

Many farmers say they raise their own seedlings to save money, but this year's bad weather is a big test for tomato seedlings.

For example, Henan has been hazy for more than ten consecutive days, in this case, seedlings, warming equipment and supplementary lights are indispensable, which is undoubtedly increasing the cost of input and the risk of seedling failure.

Therefore, we can not relax in management, as long as we master the steps of seedling raising, control the temperature and humidity, and prevent and control diseases, it is not difficult to cultivate strong seedlings, and when the seedlings are planted, we can also save worry.