Can cabbage be sprayed with urea? How to grow Chinese cabbage, how to use urea? Can Chinese cabbage

Foliar fertilizers such as urea, borax and potassium dihydrogen phosphate can be used for cabbage. In the rosette stage, in order to promote the growth of cabbage, foliar fertilizer can be sprayed 3-4 times in a row. To strengthen the adhesion, laundry detergent can be added to the solution.

At the seedling stage, under the premise that the bottom fertilizer is sufficient, only phosphorus fertilizer needs to be applied. In the clumping stage, plots with medium fertility need to be top-applied with urea and potassium sulfate. At the heart stage, it is necessary to appropriately reduce the amount of potassium sulfate.

Foliar fertilizers such as urea 100 times solution, borax and urea mixed solution, potassium dihydrogen phosphate 100 times solution can be used for cabbage. After the cabbage enters the rosette stage, the application of foliar fertilizer can accelerate the growth rate of the cabbage. Generally, it will be sprayed every 10 days or so, and the number of spraying is 3-4 times.

In order to improve the fertilizer efficiency, a small amount of laundry detergent can be added to the solution to strengthen the adhesion when spraying.

Yes, but urea fertilization should be on the roots, not on the leaves, please fertilize reasonably, which is conducive to the growth of plants

Chinese cabbage is the most fertiliser-demanding crop!

Urea is a high-quality nitrogen nutrient in the process of Chinese cabbage planting, and it is a high-quality fast-acting nitrogen fertilizer. Sufficient nitrogen nutrition is of great significance to promote the formation of hypertrophic green leaves and improve photosynthetic efficiency, but it is not suitable for base fertilizer, only suitable for top dressing and foliar fertilizer.

Urea can be used to grow Chinese cabbage, which is suitable for all soils and crops. Urea can be used as a base fertilizer or at top dressing. In rural areas, there are dry fields and paddy fields, and the use of urea is extremely wide.

If you see that the cabbage is not growing well, you can make the cabbage grow more luxuriant with appropriate fertilizer. If the cabbage itself cannot absorb nutrients, there is no way to grow large, and the taste is not good. <>

Many people don't know what urea is, in fact, urea refers to a high concentration of fertilizer. Not only is it easy to store, but it is also very convenient to use. Working with urea will protect the soil better and will not be destructive.

No harmful substances should be left in the soil, otherwise it will affect other crops. Urea is not very expensive in the market, and farmers will choose urea when growing vegetables. Compared with chemical fertilizers, urea has a better effect than chemical fertilizers, and will not cause secondary pollution to vegetables.

If you want to apply urea to Chinese cabbage, you must top dressing before transformation. Urea cannot be adsorbed by the soil, otherwise it will have a certain impact on water loss. If you choose to apply urea after transformation, you can cover the soil completely.

When applying urea to the cabbage, you can dig a hole next to the cabbage and then pour the urea into it. In this way, it is indirectly fertilizing the cabbage, and it will not have a certain impact on the roots of the cabbage. <>

In general, Chinese cabbage is very nutritious, and the use of farm manure and urea for a long time can greatly improve the yield of Chinese cabbage. Planting cabbage should also be well prepared, and the soil should be ploughed in place to keep the soil soft. Different varieties of cabbage need different proportions when using urea, and high-quality top dressing should be carried out.

The management of cabbage in the later stage is very important, don't feel that you don't need to take care of it after the cabbage survives.

Planting Chinese cabbage should be scientific, use urea reasonably, avoid too much dosage, and pay attention to the use time of urea; Chinese cabbage can chase urea because it is a good nitrogen fertilizer that is very less destructive to the soil and is beneficial to increase the yield of Chinese cabbage.

When the cabbage is just emerging, urea can be added, and after adding urea, you should water more, and at this time, you should also increase the light of the sun, and the temperature should be controlled at about 25 degrees. It is possible to add urea, but do not add too much at once, and it should be done gradually.

When planting Chinese cabbage, urea can be applied at the seedling stage, rosette stage and heart stage; Chinese cabbage can be supplemented with urea, which can ensure the yield of cabbage and can ensure the nutrient requirements of the leaves.

1.Urea is suitable for all soils and crops and can be used as a base fertilizer or top dressing. It can be used in both upland and paddy fields, so it can be used as a top dressing for Chinese cabbage.

2.Urea is a molecule before conversion and cannot be adsorbed by the soil, so it is necessary to prevent it from being lost with water. The ammonia formed after conversion is also volatile, so urea should be deeply covered with soil.

When applying urea to Chinese cabbage, the method of acupuncture application is usually used. Dig a pit next to the Chinese cabbage, then apply urea, and then cover with soil.

Urea can be used to grow Chinese cabbage. Urea is suitable for all soils and crops. Urea can be used as a base fertilizer or top dressing.

There are dry fields and paddy fields in rural areas, and urea has an extremely wide range of applications. Seeing that the cabbage is not growing well, proper fertilization can make the cabbage grow more lush. Chinese cabbage can't absorb nutrients, it doesn't grow big, and it's not delicious.

Many people don't know what urea is. In fact, urea refers to a fertilizer with a high concentration. Not only is it easy to store, but it is also very convenient to use.

Working with urea will better protect the soil and will not cause damage. No harmful substances can remain in the soil, otherwise it will affect other crops as well. The urea sold in the market is not very expensive, and farmers always prefer urea when growing vegetables.

Compared with urea fertilizer, the role of elements is better than that of chemical fertilizer, and it will not cause secondary pollution to vegetables.

If you want to apply urea to Chinese cabbage, it must be applied before transformation. Urea cannot be adsorbed by the soil, otherwise it will have a certain impact on water loss. Urea is applied after selective transformation so that the soil is completely covered on top.

When applying urea to cabbage, you can dig a pit next to the cabbage and pour urea into it. In this way, it is an indirect fertilization of Chinese cabbage, which will not have a certain impact on the roots of Chinese cabbage.

Overall, bok choy is very nutritious. Long-term use of farm manure and urea can greatly increase the yield of Chinese cabbage. Cabbage should be planted with preparation, and the soil should be ploughed in situ to keep the soil soft.

Different varieties of Chinese cabbage require different proportions when using urea, so high-quality topdressing is required. The post-management of cabbage is very important. Don't think that cabbage doesn't need to be taken care of after it survives.

Planting Chinese cabbage should use urea scientifically and rationally, avoid excessive dosage, and pay attention to the use time of urea; Chinese cabbage can chase urea, because urea is a good nitrogen fertilizer, which has little damage to the soil, which is conducive to increasing the yield of Chinese cabbage.

Of course, it can be used at the seedling stage, and it can also be used at the heart stage. It must be used reasonably, and it should also be watered in a timely manner, and too much should be avoided.

Top dressing should be carried out according to the growth period of Chinese cabbage, and the requirements for fertilizer at different stages are different at this time, and the ratio of fertilizer and water can be appropriately adjusted. Of course, you can chase this kind of fat.

Urea can be mixed with water to water bok choy, page spray can promote the growth of cabbage leaves and improve color, but pay attention to the time and method. Fertilization points:1

From planting to harvesting, it is necessary to top dressing 4 6 times, starting from 3 Wu defeat 4 days after planting, and topdressing 1 time every 5 7 days, the concentration from light to thick, and gradually increase. 2.After planting 15 cavity tribe for 20 days, 1 time of forced fertilizer should be applied, and 1 month after planting, another top dressing should be applied.

3.The number of top dressing per mu is 1000 1500 kg of manure and urine, or 10 15 kg of urea. 4.

Foliar sprays with a concentration of 0 75 urea solution can promote the growth of cabbage leaves and improve the color. 5.Fertilization should be stopped 10-15 days before harvest to enrich the tissues.

6.It should be noted that the fertilizer and water should not be too much in the later stage to avoid causing soft tissues and not suitable for pickling. 7.

Cabbage irrigation is generally combined with top dressing, and the soil can be properly cultivated and loosened before each top dressing to prevent fertilizer from drying up and water loss.

1. Top dressing at the seedling stage. Seedlings are mainly used to extract seedling fertilizer. From the young leaves to the dew of the leaves to 8-10 leaves, about 15-20 days for the seedling stage, after the budding stage, 1 mu of urea 5kg.

2. Top dressing in the rosette stage. After the cabbage enters the rosette stage, the rhizome is produced a lot, the growth and development is fast, the amount of fertilizer is large, the rosette period is generally 20-25 days, 1 mu of urea 10kg, and a certain amount of phosphorus and potassium fertilizer is applied to promote the improvement of the outer leaves, and lay a good foundation for the heart.

3. Top dressing during the heart-hugging period. The holding period accounts for 1 2 times of the growth period, and the growth rate accounts for 2 3, at this time, 10kg of urea per mu is generally pursued. In the later stage of the heart, because of the short sunlight and low temperature, the growth and development of the main stem is retarded, the digestion and absorption of nutrients is less, and the actual effect of top dressing is not significant, so it can be chased less or not topdressed.

1. Do not apply fertilizer before or after the rain to avoid the outflow of urea with precipitation.

2. Urea does not have to be applied too much, and it does not have to be overly centralized. Too much urea, the temperature is too high in granulation, resulting in a small amount of biuret, also known as biuret, which has an inhibitory effect on crops.

3. It is best to get fat urea away from the root. Avoid the inhibitory effect of biuret on crops.

A small part of urea applied to the soil dissolves in the saturated solution of the soil in a molecular structure, and is adsorbed by the soil according to the hydrogen bonding action, and most of the others are hydrolyzed and reacted into ammonium carbonate under the effect of urease, thereby being converted into carbonic acid and ammonium hydroxide. Subsequently, ammonium ions can be digested and absorbed by green plants and soil colloidal solutions, and bicarbonate cations can also be digested and absorbed by green plants, so urea does not leave all harmful components after being applied to the soil.

In addition, the biuret contained in urea can also be converted into ammonia and carbonic acid under the effect of urease, and the conversion of urea in the soil is harmed by the soil pH value, temperature and moisture, and the soil is neutralized, and the higher the soil temperature when the moisture is moderate, the faster the conversion; When the soil temperature is 10, it takes 7-10 days for urea to be completely converted into ammonium nitrogen, 4-5 days when it is 20, and 2-3 days when it is 30.

Can be topdressing in the seedling stage, an acre of land is about 200 pounds of urea, in the rosette period should be topdressing in time, and then in the middle of the heart period should be timely topdressing, topdressing must be selected according to the mu of origin of the appropriate fertilizer, pay attention to the time of fertilization, the temperature is relatively high or when it rains heavily, try not to use urea.

Urea and superphosphate, potassium chloride and well-rotted farmhouse fertilizer are reasonably matched, applied to the field, deep ploughing and soil covering, to ensure the moisture of the soil and then apply urea, Chinese cabbage should be topdressed after a period of growth.

Heavy application of urea nitrogen fertilizer, and ignore phosphorus, potassium fertilizer, cabbage is easy to grow, only long leaves and not ball or loose ball, the leaves are also dark green or brown, the leaves are weak, low resistance, cabbage quality is also poor, so the growth of Chinese cabbage should be balanced fertilization, which is conducive to white. The collective vegetable plot in our village is the vegetable garden land cultivated in the meadow by the river. Before planting cabbage, sprinkle rotten farmhouse organic fertilizer as base fertilizer.

<> we generally use rotting sheep manure, which is a hot fertilizer to neutralize the cold water source of waterlogged land, which is rich and not easy to burn roots. Generally, when 1000 kg of cabbage is produced organically by the farm, the nitrogen required is 2 3 kg, the phosphorus element is 1 kg, and the potassium element is 3 kg. From this, we can see that the growth of Chinese cabbage requires the most potassium, followed by nitrogen.

Choose drought tolerance. Disease. Early maturing varieties, cultivated in summer, began to be cultivated in the summer and harvested in September.

The high temperature and rainy weather in summer are unpredictable, which has a certain impact on the growth of cabbage. Chinese cabbage is more tolerant to fertilizer, and nitrogen, phosphate and potassium fertilizers should be applied reasonably. According to the determination, the yield per mu is 5000 kg, about 10 kg of nitrogen, phosphorus and potassium, and the ratio of the three elements is 1::.

Of course, the amount of raising and grading is not large due to other conditions, cabbage must be applied with plantar fertilizer, and on the basis of applying plantar fertilizer, fertilizer is generally not applied at the seedling stage. Several stages of Chinese cabbage fertilization: the first stage, 3-4 true leaf stage, 8-10 kg of urea or ammonium sulfate per mu.

In the second stage, after the seedlings are set, the mu is applied, because the temperature is still relatively high during this time period, it is necessary to cover the shade net in time after sowing, so as to cool and moisturize, improve the survival rate of cabbage seedlings, and promote the growth of seedlings. In order to maintain a high yield of Chinese cabbage, the embodiment of organic vegetables, apply more organic base fertilizer. Dabailai is easy to manage, keep the field soil loose and humid balanced, and sterilize the soil surface layer before sowing and transplanting to prevent the reproduction and spread of vegetable aphid eggs.

When planting Chinese cabbage, you should first moisten the soil before applying urea, generally after 20 days of Chinese cabbage growth, it is best to apply urea.

Urea is molecular before conversion, which cannot be adsorbed by the soil, and should be prevented from being lost with water; The ammonia formed after conversion is also volatile, so urea should also be deeply covered with soil. When topdressing Chinese cabbage with urea, the method of hole application is usually used, digging a hole next to the Chinese cabbage, then applying urea, and then covering the soil.

When planting Chinese cabbage, you should dig a pit and bury urea at the bottom before planting, so that the fertilization effect is best. Urea is a highly concentrated nitrogen fertilizer that does not damage the soil and does not leave any harmful substances behind.