Tomato seedlings grow and affect yield, how to prevent tomato seedlings from growing?

At the time of seedling, the date of seedling raising should be calculated forward according to the time of transplanting, the seedling period of tomato after the general autumn delay is high temperature in summer, the temperature is high, the seedling grows fast, the larger the tomato seedling, the more fertilizer and water absorbed by the root system, the more likely it is to appear to grow seedlings, generally in this period, tomato seedlings have about 4 weeks, that is, 28 30 days can reach the standard of planting, spring seedlings, tomatoes planted in summer, generally need 7 8 weeks of seedling age. Master the sowing density, the sowing of tomato seeds is not as dense as possible, nitrogen control at the seedling stage, and time seedlings, seedling beds apply foot fertilizer, generally in the seedling stage will not appear lack of fertilizer.

The soil is very fertile, the pH should be appropriate, the number of watering should be controlled, the fertilizer should be applied reasonably, the planting should not be too dense, and some chemical sprays can prevent the tomato seedlings from growing.

You can reduce the amount of watering appropriately, but also reduce the amount of fertilizer appropriately, do not let the temperature difference too much, and do not let the soil moisture too much.

First of all, it is necessary to control the water reasonably. Use fertilizers appropriately. You can add some phosphorus and potassium fertilizers appropriately, and at the same time control the temperature in the tomatoes.

Don't let the temperature exceed 30 degrees, pay attention to watering, don't water too much, just keep the land moist. Increase the light to allow the tomatoes to fully photosynthesize. If it still doesn't work, you can use some chemicals to maintain the normal growth of tomatoes.

When growing tomatoes at home, you must pay attention to field management, and if the growth of colleagues is too fast, you need to cut the strips. In this way, excessive growth can be curbed.

Timely renovation of the soil, replenishment of water, increase of fertilizer, increase of sunshine, sterilization and disinfection, scientific management.

1.When the tomatoes are growing, chemical agents are used to spray, and 800 times of promectoxin, 1500 times of mequat and other regulators can be sprayed, and the concentration should be controlled well to avoid excessive.

2.Carry out water and fertilizer control, control watering, reduce the amount and frequency of watering, reasonable fertilization, and control the use of nitrogen fertilizer.

3.It is also possible to control the elongation by planting the long stems obliquely into the soil.

4.It is also possible to adjust the temperature and delay the fruit thinning time.

How to operate the tomato control the growth of the man? What do I need to look out for? Control fertilizer and water.

There is enough fertilizer and water at the bottom. In general, do not fertilize and water before flowering and fruit set. Timely spraying of vegetable fruit before flowering, young fruit stage and expansion stage can activate the positive energy of plant ecological growth, broaden plant channels, improve plant water absorption and fertilizer absorption intensity, improve fruit yield and quality, reduce fruit drop rate, reduce the occurrence of fruit cracking, stiff fruit and deformed fruit.

Timely control of seedling age and plants. Strictly control the age of seedlings. For example, the seedling age of the general early-maturing tomato variety is about 60 days, the seedling age of the medium-late maturing variety is about 70-80 days, and the seedling age of the autumn tomato is about 25 days.

Prune and thresh the leaves in a timely and appropriate amount, set up a good shelf, ensure good ventilation, and spray growth regulators such as anti-shedding on the flowers to promote fruit setting and inhibit the growth of excessive nutrients.

Application of the agent. After planting slow seedlings, spray a layer of high cardiac lipid film every 15 days or so to form a polymer film to keep warm and moisturize and prevent bacterial infection. Timely spraying of Jinhuawang No. 3 in the process of flower bud differentiation can assimilate and induce the transmembrane signal conversion of plant cells, forcing a large amount of nutrients from the top bud to reflux, and the inertia advantage of the top bud is rapidly weakened to the cap state.

The main nutrients of the main stem are transferred to the young fruit development system to improve the fruit swelling vitality, avoid leaf hypertrophy, and improve the air permeability in the field.

Control measures for tomato overgrowth.

1。Optimize the provenance. Tomato planting should choose high-quality seeds that are suitable for the local growth environment, suitable for local soil growth, strong resistance and strong resistance to overgrowth as seed sources.

2. The planting density of reasonably densely planted tomatoes should not be too large. Farmers should reasonably arrange the planting density of tomatoes according to the requirements of planting varieties; In general, tomatoes should be planted at a density of 70 cm row spacing and 40 cm plant spacing.

3. Reach the top in time. When the tomato plant grows six layers of branches, you can take the top; Alternatively, when the plant grows to 70 cm to 80 cm, it needs to reach the tip in time to convert nutrients into reproductive growth.

4. Reasonable fertilization requires a large amount of nitrogen fertilizer for the early growth of tomatoes, but the ** of other trace elements is equally important. Under the condition of applying sufficient basal fertilizer, phosphorus, potassium and magnesium boron fertilizers should be applied before the flower bud differentiation stage and the flowering and fruiting stage to promote the transformation of multi-flower, multi-fruit and fruit color.

5. Strengthen the light and avoid planting tomatoes in a cool place. During the growth process, try to provide light conditions for tomatoes, improve the degree of light, and improve the efficiency of light energy conversion.

6. Use foliar fertilizer correctly, avoid excessive use of hormone growth regulators, and avoid spraying foliar fertilizer when there is a problem; If you find that the tomatoes are overgrown, you can spray 50% chloroquine 1000 times to inhibit the growth of the tomatoes, or spray other growth inhibitors.

7. Avoid pollution, avoid planting tomatoes on the ground polluted by industry, avoid watering tomatoes with polluted water sources, and avoid planting tomatoes around strong radiation sources and air pollution sources; During soaking and disinfection, avoid excessive temperature or soaking for too long.

First, the planting density is high, the ventilation and light transmission are poor, and the leaves are thin and yellow. In order to win honors, this overgrowth is often seen in greenhouses in winter and in constant rainy weather in spring and summer. The prevention method is simple.

As much as possible, by controlling planting density, pruning branches, etc., to improve ventilation and light transmission, more light will naturally alleviate overgrowth.

Control fertilizer and water. There is enough fertilizer and water at the bottom. In general, do not fertilize and water before flowering and fruit set.

Timely spraying of vegetable and fruit in the pre-flowering, young fruit stage and expansion stage can activate the positive energy of plant ecological growth, broaden the plant channel, improve the intensity of plant water and fertilizer absorption, and improve fruit yield and quality.

It is necessary to control the water and fertilizer, so as to better ensure the growth of plants, and we must pay attention to the selection of varieties and the surrounding environment.

Abstract 1, it is necessary to water reasonably, and avoid watering too much, so as not to cause bad roots caused by soil waterlogging.

2. It is necessary to hoe diligently. After each watering, it is necessary to hoe in time to improve the air permeability of the soil and promote the growth and development of the root system.

3. It is a product that regulates the soil aggregate structure containing humic acid and algalin. After the tomatoes are planted, they can be flushed with more organic activation nutrients such as Jiamei Dividend, Profit Lai and Hailibao, which can increase the content of organic matter in the soil, improve the soil aggregate structure, and improve air permeability.

4. It is to cover straw, etc., to reduce the compaction of the surface soil.

Tomato seedlings have short internodes and slow growth.

Hello, I'll answer it for you right away. As far as I know, it should be the poor aeration of the soil that causes the slow growth of the root system. Soil clay weight, insufficient application of organic fertilizers such as chicken manure and rice husk manure, poor soil permeability, and poor rhizosphere environment are one of the important reasons for the slow development of tomatoes after planting.

In the case of heavy soil clay, it is best to improve the soil before planting vegetables.

1. It is necessary to water reasonably, and avoid watering too much, so as not to cause bad roots caused by soil waterlogging. 2. It is necessary to hoe diligently. After each watering, it is necessary to hoe in time to improve the air permeability of the soil and promote the growth and development of the root system.

3. It is a product that regulates the soil aggregate structure containing humic acid and algalin. After the tomatoes are planted, they can be flushed with more organic activation nutrients such as Jiamei Dividend, Profit Lai and Hailibao, which can increase the content of organic matter in the soil, improve the soil aggregate structure, and improve air permeability. 4. It is to cover straw, etc., to reduce the compaction of the surface soil.

My family has also planted tomatoes before, and I personally recommend that when applying pesticides or fertilizers, they should be mixed with the soil before planting to avoid too concentrated pesticides or fertilizers and damage the root system.

It's my pleasure to help you, and I hope I help you

When planting, we should pay attention to temperature, light and fertilizer, and the temperature should be particularly suitable, which will be more conducive to the growth of tomatoes, and also prevent pests and diseases, and timely thinning flowers and fruits.

First of all, we must cultivate seedlings, and then we must strengthen management, we must ensure that the soil is moist when watering, do not water too much, clean up stagnant water, do a good job of vegetables and fruits, drink pesticides, prevent pests, and strengthen ventilation management.

It is necessary to do a good job in the management of water charges, and to do a good job in the management of land, to do a good job in the prevention of some diseases, to do a good job in watering, to do a good job in adaptation, and to do a good job in greenhouse management.

After tomato is planted in the field (greenhouse), especially after planting slow seedlings and before fruiting, the phenomenon of plant growth often occurs, which is manifested as thick stalks, large and thick leaves, thin buds and flowers, and no fruiting; Or the stalk is slender, the stem nodes are prominent, the leaves are thin and light in color, the flower buds and flowers are thin, and the flowers and fruits are dropped. In general, mid-late maturing varieties are more likely to grow than early maturing varieties. The main reasons for the growth of tomato plants are that the soil is too wet, the nitrogen fertilizer is too high, or the continuous rainy weather and lack of light.

The main measures to prevent plant growth are: timely planting, using deep furrows and high furrows to promote root growth, and coordinate the growth of aboveground and underground parts. Control the amount of nitrogen fertilizer.

Timely pruning, erection, and the use of 2,4-d or other agents to promote fruit setting and measures to promote fruit setting can make the plants bear fruit as soon as possible and inhibit excessive vegetative growth. After planting the seedlings, spray the plants with Bordeaux liquid (isometric formula).

Lack of sunlight, too little light, and relatively much watering are the main reasons.

First, water less. Watering should not be too frequent, it is best to spray a new high-fat film to maintain the plant's own humidity while preventing the infection and spread of germs.

Secondly, the temperature of the seedbed at the stage of flower bud differentiation was controlled. Control it at 24 to 25 degrees Celsius during the day and 15 to 17 degrees Celsius at night, and be sure to keep the humidity appropriate to avoid the soil from drying out and getting wet.

Then, before the growth of the Wang, the timely use of Kao No. 3 to promote the growth of plant nutrition into reproductive nutrition, inhibit the growth of the main shoot, if found that the growth is strong, can be used together with the help of Zhuang to achieve the purpose of controlling the growth.

1.Control the age of seedlings and plant them in time. Strictly control the seedling age, such as the seedling age of the general early-maturing tomato varieties is about 60 days, the mid-late maturing varieties should be 70-80 days, and the autumn tomato seedling age is about 25 days.

2.Prepare for planting early to promote seedlings to slow down. 10-30 days before planting, do a good job of land preparation, base fertilizer, cover the roof membrane and skirt of the greenhouse, ditch drainage around the greenhouse, etc., so that the humidity in the shed is lower and the temperature is higher when the seedlings are planted, which is conducive to slowing down the seedlings.

3.The amount of nitrogen fertilizer was controlled, and deep furrows and high furrows were used for cultivation to promote root growth. 4.

Prune and beat leaves in a timely and appropriate amount, build a frame, make ventilation and ventilation good, and spray flowers with growth regulators such as anti-falling pigment to promote fruit setting and inhibit excessive vegetative growth. 5.Ventilation is carried out in a timely manner.

After the plant is slowed down, at a certain temperature, it is necessary to boldly release the wind to reduce the humidity in the shed. At the beginning of flowering and fruit set, it is necessary to put the bottom wind under the skirt film, and the minimum temperature outside at night is not less than 15, and it is necessary to ventilate day and night. In the hot summer and high temperature season, the plastic film can be removed, just like open field cultivation.

6.Control fertilizer and water. The bottom fertilizer water is sufficient, generally do not apply fertilizer water before flowering and fruit setting, especially if the plastic film is used, after sitting firmly on the fruit, start to top dressing appropriately according to the situation.