What should I do if the cabbage seedlings only grow tall, but they don t grow leaves?

Chinese cabbage grows rapidly, the growth cycle is short, it can be seeded or transplanted seedlings, and the high temperature and drought in summer and autumn can prevent root damage; The transplanting of seedlings in winter and spring can prevent cold seedlings and reduce the occurrence of immature sprouts.

1. Insist on ventilation and light transmission. In addition to paying attention to ventilation, it is necessary to insist that the cabbage seedlings have at least 3 hours of sunshine every day. Chinese cabbage is a long-day plant, and the light time in spring and winter is shorter, so we must ensure that the newly emerging cabbage has enough light; In summer and autumn, when temperatures are high, people may take shade measures to cool down the seedlings, but we should be careful to ensure that the temperature is controlled and that there is enough light.

If excessive shading is carried out during the vegetable seedling period, it will incur a lack of light, and due to the phototaxis of the crop itself, the seedlings of the cabbage will be more inclined to grow taller in order to absorb the sun, and this process will lead to the composition of tall seedlings.

2. Moderate control of fertilizer and water. For the small cabbage that only grows tall but does not grow leaves, at this time, in addition to controlling the application of nitrogen fertilizer (the generation of tall seedlings is the manifestation of seedling growth, and controlling nitrogen fertilizer in the soil during seedling raising is an effective way to prevent seedlings from growing), we can sprinkle grass ash on the furrow surface.

Or fine dry soil, absorb excess water, in the way of drought squatting seedlings, inhibit the growth of elongation, and promote the true leaves.

growth, which can improve the phenomenon of only growing tall and not growing leaves.

3. Moderate shading and cooling. The best time for bok choy is at the beginning of the autumn festival.

Later, the temperature drops to the right time before planting. When the cabbage is sown, the monthly average temperature is about 16, and the highest temperature is 23, which is the most suitable, the germination is normal, the seedlings are complete, and the seedlings grow strongly. Cabbage generally does not need to stop shading treatment, but the temperature is too high, exposure to the sun is not conducive to the growth of cabbage, like the temperature in some regions exceeds 35, if it is not a heat-resistant species of cabbage, or to do proper shading treatment, cabbage can grow well, and other seasons usually do not need shade.

Fourth, if the seedlings only grow tall, not leafy conditions, can also be properly sprayed dwarf and sturdy never stop conditioning, but pay attention to the control of concentration, if the real growth is too serious, or directly re-seedling is the best.

In short, as the saying goes, "white rice and green vegetables, a wonderful way to maintain health," "if you don't eat green vegetables for three days, you will make a fire", etc., it can be seen that small cabbage (green vegetables) has a high value as a vegetable or a health thing.

At this time, we must do a good job in the corresponding field management and the implementation of the family, you can choose to use farm fertilizer or compound fertilizer, and timely receive and send the surrounding soil to water on time, ensure sufficient sunlight, spray a certain concentration of pesticides, and avoid pests and diseases.

Strengthen the regulation of temperature and light, control water and nitrogen fertilizer, control humidity, and do not plant too intensively when planting.

The easiest way to do this is to reduce the amount of watering, which can alleviate the growth.

Reasons why cabbage does not grow:

1. The temperature is too high. All cabbage is suitable for the beginning of the autumn festival.

Later, the temperature drops to a suitable time before sowing is done. At present, there is no Liqiu Festival, the temperature is too high, up to more than 40, and the light intensity.

large, high soil moisture, water vapor.

Strongly, of course, after the cabbage seeds germinate, they will inevitably not be able to withstand this environment.

2. The humidity is too high.

Cabbage is sown in the open field, and the vegetable field has recently gone through a slow rainy season.

The soil moisture content is oversaturated, and the soil temperature of the vegetable field is more than 25 and as high as 30 under the strong sunlight exposure in the middle volt. In the moist vegetable soil, under the exposure of high temperature and scorching sun, the soil moisture vaporizes into water vapor, which escapes from the upper air and discharges, and the water vapor temperature gradually increases.

Precautions. After the cabbage sprouts, in this environment, the seedlings will grow into deformed, with very long stems and feet, cotyledons.

Yellowing, the heart lobe is very difficult to differentiate and grow. Rural sowing cabbage, the time is too early, the temperature is too high, the humidity is too high, the sun is strong, the young cabbage seedlings, can not suffer from this environment toss, must grow poorly, serious pests and diseases, blight and so on now occur.

In order to avoid the occurrence of this phenomenon, only strengthen shading, cooling, ventilation and other measures to improve the seedling rate of cabbage, otherwise it will be all in vain.

The roots are weak and the absorption capacity is poor, and they cannot absorb enough nutrients for the growth of aboveground stems and leaves, resulting in poor plant growth. Nitrogen, phosphorus and potassium (20, 20, 20) water-soluble fertilizer plus humic acid active liquid fertilizer or amino acid active liquid fertilizer plus biological bacterial fertilizer were applied to the roots. Foliar sprays of natural brassinin plus humic acid active liquid fertilizer plus potassium dihydrogen phosphate.

Every 7 to 10 days, 2 to 3 times in a row. In order to promote the roots to take root and strengthen the roots, promote the seedlings to grow seedlings and strengthen the seedlings.

The temperature suitable for the germination of cabbage seeds is 20 25, and the weak growth is mostly caused by insufficient moisture and low temperature. However, cabbage seedlings only grow tall and do not grow leaves, which may be caused by excessive fertilizer and water and high temperature. Normally, cabbage seeds will basically emerge within 1 week after sowing, and to improve the situation of only growing tall and not growing leaves, we must first maintain a windy and light-permeable environment, and do not fertilize.

Many plastic sheds do not pay attention to the opening of the shed for ventilation, and there will be no leaves, and it is necessary to keep the cabbage seedlings at least 2 hours of sunshine every day. There is also a part of the vegetable seedlings that can be properly pulled out, keeping a distance of about 5 cm, and it is not suitable to sow too densely.

He only grows tall and does not grow leaves, because he does not have enough light after the seedlings emerge, the temperature is too high at night, there is too much water and nitrogen fertilizer, or because the sowing is too dense and the seedling emergence time is different.

It is caused by the lack of fertilizer, and it is necessary to give it a moderate amount of fertilizer according to the needs of the cabbage, and then it will grow leaves.

Chinese cabbage is one of our common vegetables, especially in autumn, after harvesting, after storage, it has been able to be eaten for a winter, Chinese cabbage wants to grow well, increasing fertilizer is indispensable, this is everyone knows, but some farmers and friends planted cabbage, obviously use a lot of fertilizer, cabbage does not grow ideally, I don't know why.

In fact, cabbage fertilization, or pay attention to scientific application, too much fertilizer, will also be wasted, increase the cost of input. If you only pay attention to the input of nitrogen fertilizer, and ignore the phosphorus and potassium fertilizer, farmhouse fertilizer, a variety of medium and trace element fertilizers, etc., it will not grow well, the heart is poor, it is easy to get sick, and the value of the commodity is reduced. What do we need to pay attention to in fertilization?

1, apply sufficient base fertilizer, reasonable top dressing, cabbage likes loose and fertile, organic matter-rich soil, there are many farmer friends, ignore the application of organic fertilizer, replaced by chemical fertilizer, when it comes to why do you like to use chemical fertilizer? Most of them will: "Chemical fertilizer is fast-acting, easy to apply, to achieve immediate results, and can also save a lot of time, because organic fertilizer, but also need to carry out many processes such as composting, fermentation, etc., which takes time!"

This is also true. But if you want cabbage to grow well, yield and quality high, improve the competition of commodities, and apply fully rotted farm fertilizer, it is really an essential step, because farm fertilizer is rich in organic matter, fertilizer effect is stable, fertilizer effect is long, this is the characteristics of organic fertilizer, farm fertilizer as a base fertilizer is applied at one time, and with some chemical fertilizer.

2. The application of foliar fertilizer, during the growth of cabbage, only need to top dressing once in the rosette stage of Chinese cabbage, and then, at an interval of 10 to 15 days, apply potassium dihydrogen phosphate or chitin amino acid water-soluble fertilizer + soluble potassium fertilizer. Spraying foliar fertilizer, can improve the absorption and utilization rate of cabbage, the Chinese cabbage planted by Lao Wang in recent years, looks good from the outside, after cutting the cabbage heart leaves have dried up, it is very unpopular with consumers in the market, Chinese cabbage has heartburn, mainly caused by the lack of calcium, through the appropriate supplement of calcium fertilizer, the situation will improve, Lao Wang learned through learning, calcium has an important position in the growth of cabbage, relying on the application of nitrogen, phosphorus and potassium fertilizer, the growth of cabbage is still unfavorable. Calcium supplementation can be done in the form of foliar fertilizers.

Foliar fertilizer generally chooses potassium dihydrogen phosphate + 1000 times liquid chelated calcium + 2116 per day.

3. The correct fertilization method, before planting Chinese cabbage, carry out land preparation and fertilization, apply more than 3,000 kg of fully decomposed farmhouse fertilizer per mu, 80 kg of 45% nitrogen, phosphorus and potassium controlled-release fertilizer, and an appropriate amount of fertilizer containing a variety of medium and trace elements. Cabbage into the cluster stage, per mu of nitrogen, phosphorus and potassium compound fertilizer about 30 kg, after the top dressing, try to choose the water flushing and spraying foliar fertilizer, because cabbage ridge sealing, and then ditch fertilizer is easy to hurt the roots, causing some bacterial diseases such as soft rot. If you feel that it helps you, please like it before you go.

It may be that the temperature is not suitable, or that the amount of light and fertilizer is insufficient. In addition, sufficient water is needed during the growth period of cabbage, and if there is too much water or too little water, it may cause the cabbage to not grow.

Summary. The cabbage sprouted two small leaves, withered and died; There are many reasons. For example, the influence of herbicide soil residues on previous crops, or high temperature, rainy weather, insufficient light, and poor seedling resistance after sowing will lead to the wilting and death of seedlings.

What is the reason why the two leaves of cabbage do not grow after they emerge?

The cabbage sprouted two small leaves, withered and died; There are many reasons. For example, the influence of herbicide soil residues on previous crops, or high temperature, rainy weather, insufficient light, and poor seedling resistance after sowing will lead to the wilting and death of seedlings.

First, choose excellent varieties. There are many varieties of Chinese cabbage, which can be divided into three basic ecological types: straight type, original head type and oval type, but due to the reasons of the growing season, the middle and late maturing varieties that are resistant to disease, cold-resistant, high-yield and storable must be selected in the selection. Second, the sowing time.

In general, it is advisable to sow 3 to 5 days before and after the beginning of autumn, and in high temperature years, it can be postponed to mid-August. Late-maturing varieties with disease resistance and long growth period can be sown early, and medium-maturing varieties with short growth period can be sown a few days late.

Control methods (1) correctly select the sowing date, according to the local climate, according to local conditions to determine the appropriate sowing date, should not be sowing too early. In case of high temperature weather for several consecutive days after sowing, it should be watered in time to reduce the ground temperature. (2) In the absence of rain, generally water once on the day of sowing or the next day to ensure that the ridge surface is wet, and water the second time on the third day of sowing to promote most of the young shoots to emerge.

3) In southern China, cabbage fields should not be covered with sheath blight, and Chinese cabbage should not be planted in rice fields with severe sheath blight. (4) Chinese cabbage cannot be cropped continuously, nor can it be rotated with other cruciferous vegetables, which is one of the important measures to prevent pests and diseases; Crop rotation of more than 3 years can be implemented if conditions permit.

One is yellow, that is, too much water causes the soil to accumulate water for a long time, poor air permeability and even some fibrous roots rot. It shows that the young leaves are dark yellow and dull, and the new shoots are shriveled. The second is fat yellow, that is, fat, which is manifested as the tip of the old leaves turning yellow and falling off, and the new leaves are thick and shiny, but generally uneven and unstretched.

You can sprinkle a layer of radish seeds and pull them out after a few days of emergence to consume nutrients. The third is dry yellow, due to long-term lack of watering or dehydration, although the new leaves are normal in color, the lower leaves gradually dry up and fall off and age. Fourth, it is alkali yellow, and the water quality in the north is alkaline, and the leaves gradually fade, turn yellow or even fall off.

The easiest way to do this is to pour fermented rice washing water or rainwater.

It didn't die, it didn't turn yellow, it just didn't grow.

That's a matter of variety.

How to deal with it. For example, fertilize and drench.

What kind of fertilizer to apply. It's too small.

I don't know, but you're going to have to go to the fertilizer store and ask

1.Keep ventilation and light through. It is easier to find when planting in the garden, and the vegetables sown at the same time grow slender in places with no sunlight or little sunlight, while vegetables in sunny places grow stout, so it is necessary to ensure ventilation and light conditions.

If the sowing is too dense, pull out a part of the seedlings in time to increase permeability and reduce the seedling density competing for nutrients.

2.Fertilizer and water control. In particular, the application of nitrogen fertilizer is controlled, nitrogen fertilizer is conducive to the growth of seedlings, at this time, you can sprinkle grass ash or dry soil on the surface, and squat seedlings in a dry and wet way.

3.Choose the right variety in time, usually the suitable temperature of cabbage is about 20, if the growth is weak, it may be caused by the dry and wet climate temperature. Therefore, it is very important to choose the right variety, and there are many kinds of bok choy, such as cold resistance, high temperature resistance, early ripening, late ripening, etc.

Selecting varieties suitable for the local climate, water and soil conditions is an important factor to ensure yield and quality.

This situation is likely to occur because of the lack of nutritional zinc supplementation in the cabbage.

It shows that the cabbage lacks water, and you can increase the water to make the cabbage grow big and tender.