What is the reason why tomatoes have dark green leaves, slow growth, curly leaves, and slow flowerin

It may be that the fertility of the soil is not up to standard, or the water is not enough, or it may be a lack of sunlight exposure, so it is necessary to carry out sunlight exposure, fertilization and watering.

It is very likely that the plant lacks nutrients, so nitrogen and potassium fertilizer should be supplemented in time to promote the growth of plant rhizomes, appropriate watering, keep the soil moist, and increase light for plant ventilation.

It is likely that the nutrition is not enough. Go to a professional place to buy some nutrients, and the effect is very good after spraying.

Either the weather is too hot and there is a lack of water, or it is not properly protected and attacked by pests and diseases. All are adverse reactions.

It should be that there is a pest, because when there is a pest, the leaves will shrink, and pesticides can be sprayed**.

1) High temperature and drought: Tomato likes warm climatic conditions, not tolerant to high temperature and drought, once it encounters high temperature and drought for several days, in order to reduce water transpiration, the stomata on the leaves will be closed, causing the leaves to retract or shrink. (2) Drastic temperature changes:

In hot weather, irrigation at noon or sudden sunshine after rain, because the plant cannot adapt to the sudden change in weather conditions, it will cause physiological abnormalities and cause leaf rolling. (3) Weakening of the root system: Tomato has poor root development at the seedling stage, or serious injury during planting, which will cause the root system to absorb water weakly.

The causes of tomato leaf curling can be divided into six types, viral diseases cause leaf curling, and the common types are: mosaic leaf type, fern leaf type, striped spot type, giant bud type, leaf roll type, and yellow top type. The infected plants are short, the leaves are curled and clumped, and in severe cases, there are only leaf veins and no mesophyll.

Viral diseases can be transmitted through contact with toxin-carrying insects and saps.

There are several main reasons. The first is the impact of high temperature and drought in the growing environment, and on the other hand, it is caused by improper management. Once tomatoes begin to bear fruit in large quantities, they are affected by high temperatures, both in greenhouses and in the open field.

1. When the temperature is high, the transpiration of leaf water is large, and the soil is dry. The water absorption of the roots cannot meet the transpiration needs of the leaves, so in order to reduce the transpiration of water, the leaves shrink. 2. The leaves of the infested tomatoes will show symptoms such as greening, smallening, and shrinking.

It is mostly manifested on new leaves and upper leaves, and is easy to occur under high temperature and strong light.

Tomatoes are a very popular fruit and vegetable. Tomatoes have a moist taste, sweet and sour taste, and are widely grown. However, tomatoes are often rolled up, which is very troublesome for vegetable farmers.

The first is the impact of the environment. Be sure to give enough water during the tomato planting process. When the roots of tomatoes are damaged, the roots cannot absorb water in time, which will lead to drought and water shortage of tomato plants, and the leaves will roll back.

Especially in summer, when the weather is hot and the soil is severely dehydrated, the leaves of tomatoes can shrink and dry up. When the temperature is too high, the tomato leaves lose water very quickly, and the roots cannot transport water, so the tomato leaves will automatically roll up to reduce water evaporation. In addition, it is necessary to supplement nutrients during the process of tomato planting, when the nutrients are insufficient, the leaves of the tomatoes will also shrink and dry up, and the leaves will give the only nutrients to the tomato fruits.

Another reason why the leaves of tomatoes are curly and brittle is a viral attack. When some virus-carrying insects bite the leaves of tomatoes, the leaves will appear yellow, soft, curled and wrinkled. When the tomato plant is too short, it is necessary to consider the cause of the virus.

At this time, we must pay attention to spraying drugs and prevent and treat them in time to avoid greater losses. There are many mosquitoes and pests in summer, so be sure to control the concentration when spraying tomatoes. Excessive concentrations of pesticides can also cause spots on tomato leaves, which roll up upwards.

Therefore, it is necessary to be careful in the selection of seedlings when planting tomatoes. Generally, it is necessary to choose seedlings with large leaves, thick leaves and strong roots. Pay attention to regular watering during the planting process.

In the summer drought, we must control the amount of watering and prevent and control pests and diseases in time. These are the reasons why tomato leaves become curled and dry, readers must prescribe the right medicine, according to the different diseases of tomato leaves to choose prevention and control methods, I hope these methods can help you.

It may be because the temperature is too dry during the growth of tomatoes, and the leaves will wither and shrink after exposure to the sun, or it may be that it has experienced wind chill at that time, or it has been attacked by some diseases and insects, or it may be that the owner has applied too much or too little fertilizer when growing.

This may be because the weather is too dry, the water supplement is insufficient, and there are diseases and insect disasters on the leaves of tomatoes, so it is necessary to water in time, apply ground fertilizer, spray a certain concentration of pesticides, and use farmhouse fertilizer to ensure the fertility of the soil.

It may be that the outside quota is too high, it may be that the soil is too dry, it may be infected with bacteria, it may be that too much fertilizer is used, or it may be that the leaves are deformed.

Hello. Tomato leaf curling causes.

1) Variety differences Some early-maturing varieties, weeping varieties and varieties with weak disease resistance are prone to leaf rolling.

2) Poor water absorption ability: poor root development, or injury, seedlings are not divided in time, and the water absorption ability of the root system of the plant is weakened and leaf curling is easy to occur.

Tomato. 3) Unsuitable water or nutrient conditions in the soil.

The soil is dry and early lack of water, or the root system is hypoxic due to excessive soil moisture, or the organic matter content in the soil is low, or the soil lacks phosphorus, potassium, calcium, magnesium, iron, manganese, copper and other nutrients, or excessive application of nitrogen fertilizer, especially too much ammonium nitrogen, resulting in leaf rolling.

4) The temperature is not suitable The temperature exceeds 35 degrees during the day, or the temperature is lower than 6 degrees at night. or the temperature is high and the relative humidity in the air is low.

Preventive technical measures.

1) Select the best varieties Choose the best varieties that are not easy to roll leaves, or have strong resistance to stress.

2) Protect the development of the root system by using a nutrient bowl to protect the roots and raise seedlings, or divide the seedlings in a timely manner to cultivate strong seedlings of the appropriate age without diseases and insects. After slowing down the seedlings, it is necessary to pay attention to water control and squatting seedlings, and avoid hurting the roots in the process of agricultural operation.

3) Strengthen field management.

Apply enough fully decomposed organic fertilizer as base fertilizer, use plastic film to cover the cultivation, and set up a frame in a timely manner. After entering the fruiting period, top dressing and watering should be carried out in a timely manner, and after the first and second ears of fruit were picked, nitrogen, phosphorus and potassium compound fertilizers should be applied with water each time to supplement nutrition and promote the growth of branches and leaves. Do watering at the right time and in the right amount to keep the soil moist.

In the hot season, it is watered in the evening. Thermal insulation measures should be taken in the low temperature season for cultivated in protected areas, and cooling measures should be taken in the high temperature season to avoid sudden amplification of wind or long-term release. It is best to use water-soluble fertilizer when topdressing, which has a fast absorption rate and good effect.

4) Pay attention to covering and shading When the light is too strong, you can use a shade net to cover it.

5) Timely and reasonable pruning.

Remedy. 1) Leaf curls caused by improper management should be improved as soon as possible Symptomatic management measures should be taken to improve environmental conditions.

2) Pay attention to avoid the occurrence of sunburn fruit and remove the sunburn fruit as soon as possible, cover the shade net, and increase the number of watering times or watering amount appropriately.

Tomato plants sometimes appear on the upper part of only a leaf wilting strange phenomenon, may be high temperature at noon, transpiration too fast, water ** is not timely caused, but there should be no obvious impact on growth, if to ensure that the soil is not short of water, you can continue to observe, if there are other problems, but also timely consultation for prevention.

If the watering is insufficient, the water in the leaf cell vacuole is reduced and no longer full, so it is necessary to loosen the soil first and then water thoroughly; If the temperature is too high, the cell wall of the leaf cells will become soft, and ventilation and cooling will be required; If the light is not received enough, the intensity of leaf tissue is reduced, and it is necessary to use a fill light to make up the light. Disease damage, need to remove rotten and dry branches and leaves, spray 400 times 80% mancozeb, four times a month.

The upper blade is hairy, depending on whether it has been stained with some corrosive liquid. If not, it's a phenomenon in general.

The picture is in **, is it divided into time periods or is it like this all day? I haven't used any fertilizer or pesticides, and there is no abnormal weather in the recent period.

In both cases, it is not clear which answerer is not clear, so the next time you ask a similar question, try to upload it**, so that it is easy to analyze and answer. The most taboo thing about balcony tomato planting is the long man, which is the main reason why the tomatoes do not bloom and do not bear fruit. Balcony planting, due to the light conditions can not meet the requirements of indoor planting, coupled with the fact that the seedlings are often raised earlier, the water source is sufficient, if the owner is too diligent The nutritional value of tomatoes is very high, and individuals have also planted small tomatoes on the balcony in the past two years, and watched the tomato seedlings grow up, bear fruit, mature, and enjoy their own planting results, and feel that the tomato taste will be different, haha.

Actually, when the tomatoes were planted in the first year.

<> tomatoes are male and female flowers, and tomatoes will never bloom on their own if they are not pollinated during the flowering period. A tomato flower, which has both pistils and stamens, is a self-pollinating plant that needs to be artificially pollinated indoors. Long.

However, it is important to note that tomatoes do not like light for as long as possible. If you have a good floor, the balcony is not covered, and the tomato receives too long a sunshine that exceeds the light saturation point, there will be a problem of only flowering but not fruiting. If the balcony is sheltered, it will also come out.

The problem of not bearing tomatoes. That is to say, after transplanting, the tomato is caused by excessive watering and fertilization in the early stage of growth, or insufficient light in the place where it is placed. For tomatoes to have high yields, fertilizer is particularly important, and the soil bottom fertilizer for growing tomatoes should be lowered.

I think this point cannot be ignored, the bottom fertilizer must be sufficient, and it is not good if the flower pot is small. Long basins or large round basins are fine. The distance between the leaves grows very large, the branches grow very weakly, and the light sees the leaves and the light sees that they are growing, it just doesn't bloom, so we must remember that we want to raise it well.

There are several reasons why the tomatoes planted on the balcony are leafy and only bloom but do not bear fruit. Probably the biggest problem is its luxuriation. Because only a long strut will absorb too much of its nutrients, you need to prune it and leave only a few trunks.

Here's my family's tomatoes.

Tomato branches are luxuriant, but do not bear fruit, it is likely that the tomato's light is insufficient, affecting the photosynthesis of the plant, and on the other hand, it may be that the tomato is not properly watered, and the tomato occupation is more lush, so it should be pruned frequently.

Tomato is a light-loving crop, growth and development need sufficient light, within a certain range, the stronger the light, the more vigorous photosynthesis, the fruit can get more inorganic matter, the higher the fruit setting rate, in the flowering and fruiting period of the tomato needs a long time of light, it is best to reach 16 hours for the best, the light is insufficient, easy to drop flowers and fruits, and the single fruit weight declines, the yield is low, which is also the reason why many of their own tomatoes have many small fruits.

First of all, this is a physiological disease.

attack, the main reasons are as follows:

1. Control the overdose of drugs. Excessive weight of the growth control agent will cause the top leaf to be dark green, and it will also inhibit the absorption of elements such as calcium and boron, resulting in the drying out of the leaf at the growth point.

2. During the period of tomato vegetative growth and reproductive growth, the demand for nutrients and water is large, and if you encounter unfavorable environmental conditions or insufficient nutrition, it is very easy to develop nutrient deficiency.

3. The water control of plants is too serious.

4. Soil deterioration and stunted root development.

First of all, you don't understand the laws of plant growth. Seedling stage.

The body grows slowly and is relatively long. The vegetative growth of a general plant takes more than one month, and some tomato varieties take two months.

There is a certain period of slow seedling period after the fixed value of non-hole tray seedlings, and the management after the fixed value is very important.

You make a long speech without a specific description, and you are even more confused.

A long story may not be clear, but the on-site operation only requires a few actions.