Is it OK for corn to chase urea without mulching?

When we top fertilize corn, we will choose to use urea or other nitrogen-containing compound fertilizers, and it is best to cover it with soil after topdressing, because some fertilizers will volatilize, and some fertilizers will absorb the moisture in the air and slowly dissolve them, and they are also very permeable.

In order for corn to grow better, it is better to cover it with a thin layer of soil after top dressing. Because it takes a while for corn to absorb fertilizer, mulching can reduce fertilizer loss and improve utilization rate.

The non-soil mulching of corn urea has too much effect on the fertilizer utilization efficiency of urea, which will cause a large loss of urine nutrients, thereby affecting the application effect of urea. The practice of spreading urea in the furrow during top dressing. It should be said that this practice used to be very common, because it saves effort and trouble, but it has a greater impact on the utilization rate of urea.

Urea is an elemental fertilizer, and the main component is carbonamide. When carbonamide is sprinkled on the surface, it is easy to decompose some fertilizers due to light, resulting in the loss of amines in urea, thus affecting fertilizer efficiency.

The second is that urea is applied on the surface and does not bury the soil, which is too easy to lose with surface water. For example, natural precipitation, artificial irrigation, etc., will cause a certain amount of surface runoff, and urea will quickly dissolve in the water after coming into contact with this water and lose with the flow of water. This is also the reason why the old people in the countryside often say that "fertilizer goes with the water".

For topdressing urea, pit or furrow application is still recommended. Corn top-dressing urea, pit application is not realistic, you can use machinery in the ditch to wade the ditch, sprinkle urea and then use machinery to bury the soil, the urea is buried under the soil. On the one hand, the soil under the ditch is moist, and the urea can be dissolved in time; secondly, even precipitation or artificial irrigation can reduce urea loss; Finally, the sun is not exposed to the sun, and there is no chance of photolysis.

Fertilization of corn during the growth process is a very important thing, and it is necessary to pay attention to fertilization at the right time and in the place when fertilizing. The main time period of fertilization is to apply an appropriate amount of basal fertilizer before planting, and apply urea once as seedling fertilizer after seedlings grow. Fertilizer is applied once after the corn grows to about 40 cm.

Fertilizer should also be applied after corn ears, and only reasonable fertilization can improve the yield of corn.

Corn is a crop that needs a lot of water and fertilizer, and it needs to be topdressed many times in the whole life process of corn to meet the nutrient needs of corn growth. Theoretically, the whole corn growth process needs to be topdressed 4 times, and it needs to be applied in holes, while in the actual production process, farmers generally top dressing 2-3 times, and now most of them are sprinkled. Let's take a look at how to do it and what the implications are.

Theoretically, it takes 4 times to top dressing corn, namely the seedling stage, the big flare stage, the heading stage, and the filling maturity stage, and it needs to be applied by holes, that is, it is necessary to cover the soil layer to prevent fertilizer evaporation and loss. Top dressing in four periods can play a role in promoting the rapid growth of plants, promoting the growth of corn stalks, promoting the growth of corn ears, and promoting the large and full corn grains.

However, with the accumulation of farmers' planting technology and experience, farmers now have two topdressing of corn, namely the large flare stage and the filling maturity stage. Because farmers have planted corn and sown corn, they have already applied enough bottom fertilizer, which is enough for the nutrition of corn seedlings, and if excessive fertilization will cause corn to grow, and waste fertilizer. During the filling maturity period, farmers will generally take the first step to reduce nutrient loss, so there are some farmers who do not carry out top dressing during this period, and the final yield will not be greatly affected.

In the past, farmers also applied topdressing, but later I analyzed, it may be that a large number of farmers go out to work, and it is generally left-behind women who manage crops at home. However, it should be noted that urea should be sprinkled after rain, because the soil is moist after rain, and urea can melt quickly and seep into the soil in time for corn absorption. Be sure to avoid hot weather and choose after rainy days.

To sum up: planting corn needs a lot of water and fertilizer, the whole growth process farmers can according to the specific situation, top dressing 2-4 times, if the conditions allow the best hole application, if the artificial is not enough to sprinkle the effect is the same, just to avoid high temperature weather, heavy rain weather.

To put it simply, it can, but it is not always covered with soil and the utilization rate is high. Strictly speaking, it is best to cover the soil with top dressing to prevent the loss and volatilization of nitrogen, especially the nitrogen of high chemical fertilizers, such as urea, ammonium bicarbonate, ammonium nitrate and other fertilizers.

If you chase urea to the corn field, if you don't cover it with soil, the weather will be hot and the sun will evaporate; If you chase urea into the corn field and don't cover it with soil, when it rains, the urea will go down with the rain, so the corn chasing urea must be covered with soil!

Excluding rainy weather, if it is not irrigation and fertilization, then whether it is corn and wheat, as long as urea is used during the top dressing period, it is necessary to apply deep soil covering. This is the basic common sense that crops use corn as top dressing.

Yes, urea.

Spray corn with potassium dihydrogen phosphate.

It can be used together, potassium dihydrogen phosphate + urea, which can promote the rapid growth and development of corn, which is conducive to increasing the fullness of corn ears, increasing yield, increasing disease resistance, and greatly improving the speed of corn cob.

40 kg of urea or potassium phosphate.

30-5-5) ratio is close to compound fertilizer.

About 50 catties, about 5-10 cm deep is the best. Top dressing at the ear stage is generally applied from the corn plant 15 to 20 cm, in strips or holes.

In the application according to the soil fertility situation, generally apply about 2 tons of organic fertilizer per mu, and with 10 kg of ammonium fertilizer, 20 kg of phosphate fertilizer, and 6 kg of potassium fertilizer. If the plot is deficient in zinc fertilizer, it should also be appropriately increased by about 2 kg of zinc fertilizer. The basal fertilizer is generally applied in combination with the ground before sowing, which can be applied in holes or strips, and after application, the fertilizer is covered with about 4 cm thick fine soil to avoid direct contact between the seeds and the fertilizer to burn.

Urea can be sprayed on corn, and corn can be applied with urea.

At this stage, it is the corn fertilization period, and farmers mostly use urea as the main fertilizer. However, incorrect fertilization habits not only cause a waste of energy and labor, but also hinder the growth of corn.

After urea is mixed with ammonium carbonate and applied to the soil, it must be converted into ammonium carbonate or ammonium bicarbonate before it can be absorbed by corn, and its conversion rate is much slower than that under acidic conditions under alkaline conditions. Ammonium carbonate is alkaline when applied to the soil and has a pH value. The mixing of ammonium carbonate and urea will greatly slow down the conversion of urea into ammonium carbonate or ammonium bicarbonate, which is easy to cause urea loss and volatilization loss.

Do not sprinkle urea on the surface of the ground, it takes 4-5 days of transformation at room temperature to be absorbed by corn, most of the nitrogen is volatilized in the process of ammoniation, and the utilization rate is only about 30%. If applied on alkaline soils and soils with a high content of organic matter, the loss of nitrogen will be greater, so urea cannot be applied on the surface.

Avoid irrigating urea immediately after applying urea is an amide nitrogen fertilizer, which must be converted into ammonium nitrogen after application before it can be absorbed and utilized by corn. In the process of transformation, due to different conditions such as soil, moisture and temperature, the time is long and short, and it generally takes 2-10 days to complete.

Urea can be used as a nitrogen fertilizer for corn, which is sprayed to provide the nitrogen needed by plants. Normally, corn needs to be supplemented with enough nitrogen fertilizer during the planting process to ensure its growth and maximum yield. Urea is a common nitrogen fertilizer because it contains a high concentration of nitrogen and is easily absorbed and utilized.

Urea can be applied to corn plants by spraying, which allows nitrogen fertilizer to be absorbed and utilized by plants more quickly and avoids nitrogen loss in the soil. When spraying urea, care should be taken not to overspray, otherwise it may cause problems such as burning seedlings of plants. At the same time, it is necessary to pay attention to the selection of the right time and weather conditions to ensure the best spraying effect while avoiding pollution and harm to the environment.

It is recommended to spray in the morning or evening, and avoid spraying under high temperature, strong wind, etc., to avoid the loss of pesticides or the impact of aerosol diffusion on the surrounding environment.

Urea can be sprayed with corn. Urea can prevent pests and diseases, and if the corn grows weakly, it is more likely to have pests and diseases. Therefore, adding urea when spraying pesticides can prevent and control pests and diseases while also supplementing nitrogen nutrients.

Urea, also known as carbaamide, is an organic compound composed of carbon, nitrogen, oxygen, and hydrogen, which is a white crystal. One of the simplest organic compounds, it is the main nitrogen-containing end product of protein metabolism in mammals and some fish. It is also the nitrogen fertilizer with the highest nitrogen content at present.

Urea spraying is not recommended. Why? Because urea is volatile, if you spray it, corn can't absorb it effectively in the first place. In addition, if the concentration is too high, it is easy to burn the corn leaves. The best thing to do is to put it in the roots of the corn and let the soil absorb it.

Urea can be sprayed on corn to control pests and diseases while also replenishing nitrogen nutrients.

As farmers who regularly use urea know, urea is highly absorbent and relatively non-volatile. After spraying, the delivery of water can be carried out. Due to the drought of the soil, the water penetrates downward, allowing urea particles to enter the soil and melt at the same time.

Because the sowing site is very close to the corn roots, urea can be absorbed by the corn roots soon after melting, so that urea can play the fastest role, improve its utilization rate, and increase the effectiveness of fertilizer. Corn needs to be watered, the soil moisture must be bad, and corn needs a lot of water.

After watering, the corn will grow very quickly in a hurry. It is nourished by water and grows very quickly. The sound of corn jointing that we often hear must be the first night after the corn is watered.

When corn grows quickly, it needs nutrients and water. The combination of water and fertilizer makes corn grow very quickly. Watering immediately after urea spraying can be done with both watering and fertilization to maximize corn growth to hear the growth of jointing.

Ammonium bicarbonate is very unstable. If not watered for about ten minutes, the volatile ammonium will turn the corn black, causing the corn to burn.

Therefore, in the application of carbonic acid resistant to top dressing, the soil burial method must be adopted. At the same time, the application distance of ammonium bicarbonate should be kept in a position to avoid burning ammonium bicarbonate in the roots of corn, resulting in the death and wilting of corn seedlings. After topdressing ammonium bicarbonate, watering operations should also be actively carried out to melt ammonium bicarbonate, reduce its volatilization, and improve fertility.

Urea has strong water absorption and weak volatility, and its fertility effect is slower than that of ammonium bicarbonate. Urea is weak in volatility and strong in water absorption, which determines that urea can be used for water dispersion when used for corn topdressing.

If the fertilizer effect is wasted, it is too much watering, corn water. The dissolved urea molecules in the water have water evaporation, so as long as you know how much to water when watering, you can control a little waste. The point is, when you water, the water carries the melted urea molecules into the ground, and the process of dissolution is quickly absorbed by the corn.

A small amount of urea that cannot be absorbed in time remains in the soil, and after the water penetrates sufficiently, the effect of soil burial and cavity is almost the same.

I think it can be buried in the soil and then sprinkled with fertilizer so that it can also be well absorbed by the corn, and it is best to apply urea before it rains to prevent it from being dissolved by the rain.

It should be watered with water, which is very convenient, and can also improve the absorption rate and allow the plant to grow better.

It is very convenient to water it, and there is no need to dig the soil, and the corn will be absorbed faster.

Summary. Urea can be applied when planting corn. In the practice of applying urea with water in the corn field, the amount of water is controlled, generally the urea is dissolved first, which will be in an iron bucket, and then while watering, take a water ladle to "mix and water" the "urea water" into it.

2. Urea is very soluble in water, and its dissolution is also very good, and the solution dissolved in water is also called a neutral solution. In this way, urea can basically adapt to any soil properties, and urea is called a multi-functional fertilizer in the folk, and the base fertilizer is mainly farmhouse fertilizer, supplemented by carbon ammonia. The first top dressing is mainly urea.

Urea has a high proportion of nitrogen content, is cheap, and is one of the fertilizers that farmers like very much, especially for top dressing corn, and the effect is obvious at the seedling stage.

Can urea be applied to corn seeding?

Urea can be applied when planting corn. In the practice of flushing urea with water in the corn field, the amount of water is controlled, generally the urea is dissolved first, which will be in an iron bucket, and then while watering, take a water scoop to "mix and water" the "urea water bridge Zheng" into it. 2. Urea is very soluble in water, and its dissolution is also very good, and the solution after dissolving in water is also called neutral solution.

In this way, urea can basically adapt to any soil properties, and urea is called multi-functional fertilizer in the folk, and the bottom fertilizer is mainly farmhouse fertilizer, supplemented by carbon ammonia. The first top dressing is mainly urea. Urea has a high proportion of nitrogen content, is cheap, and is one of the fertilizers that farmers like very much, especially for top dressing corn, and the effect is obvious at the seedling stage.

I asked if the urea sprinkled on the bottom of the corn and the corn didn't come out was the reason for the urea.

Is it too high.

Is the concentration the same as in previous years?

I don't know if he sprinkles urea every year I'm just sprinkling urea on people this year It's someone who asked me to sprinkle it with the wild I don't know if it's high concentration or what, anyway, the chaos faction is corn out of a special congratulations.

The main thing he is with urea.

If the concentration of the rent bucket is not well controlled, the fibrous nucleus may result. But it can also be related to other factors, such as the seed itself, or the temperature and land.

If Wu Jiaming accidentally uses too much fertilizer, he should take remedial measures as soon as possible, and the quickest and most troublesome way to absorb the leakage is to water, using water to dilute the concentration of fertilizer.

The temperature is also high for a few days, and the bottom is also frozen.

Winter Water Land. I'll just ask if the main thing is the speed of peeing.

If the concentration is high, it is possible.

The temperature shouldn't have much of an effect.