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Do you know the Application Fields of Urea?

Mar. 07, 2020

As a Fertilizer Urea Factory, share with you the application fields of urea.

Medical field

Dermatology uses certain agents containing urea to increase the humidity of the skin. Non-surgical nails used in closed dressings contain 40% urea.

Urea n46 Fertilizer

Urea n46 Fertilizer


Granulara Urea is high-concentration nitrogen fertilizer. It is a neutral fast-acting fertilizer and can also be used to produce a variety of compound fertilizers. No harmful substances remain in the soil, and no adverse effects are caused by the long-term application. Animal husbandry can be used as a feed for ruminants. However, when the temperature is too high during granulation, a small amount of biuret, also known as biuret, can inhibit the crop. China stipulates that the content of urea biuret for fertilizers should be less than 0.5%. When the biuret content exceeds 1%, seed fertilizer, seedling fertilizer and foliar fertilizer cannot be used, and the urea content in other application periods should not be too much or too concentrated.

Urea is an organic nitrogen fertilizer that can be absorbed and used by crops after being hydrolyzed into ammonium carbonate or ammonium bicarbonate by the action of urease in the soil. Therefore, urea should be applied 4-8 days before the fertile period of the crop.

Urea is suitable for base fertilizer and top dressing, and sometimes it is also used as seed fertilizer. Urea is molecular before conversion and cannot be absorbed by the soil. It should be prevented from losing water. The ammonia formed after conversion is also volatile, so urea must also be applied to the soil. (Soil transformation is applied to the soil. A small part is dissolved in the soil solution in a molecular state and absorbed by the soil through hydrogen bonding. Most of the other are hydrolyzed to ammonium carbonate under the action of urease, and then generate carbonic acid and ammonium hydroxide. Then ammonium Root ions can be absorbed by plants and soil colloids, and bicarbonate ions can also be absorbed by plants, so no harmful components remain after urea is applied to the soil. In addition, biuret contained in urea can also be decomposed into urea by the action of urease Ammonia and carbonic acid, the conversion of urea in the soil is affected by soil pH, temperature and moisture. It reacts neutrally in the soil. The higher the soil temperature is, the faster the conversion is. When the soil temperature is 10° C, urea is completely converted into ammonium. 7-10 days for nitrogen, 4-5 days at 20° C, and 2-3 days at 30° C. Ammonium nitrogen is generated after urea hydrolysis. The surface application will cause ammonia volatilization, especially alkaline or alkaline The soil is more serious, so when applying urea, the soil should be deeply applied, and the paddy field should be deeply applied to the reducing layer.)

Urea is suitable for all crops and all soils. It can be used as a base fertilizer and topdressing. It can be applied in dry paddy fields. Due to the conversion of urea in the soil, a large amount of ammonium ions can be accumulated, which will cause the pH to increase by 2-3 units. In addition, urea itself contains a certain amount of biuret. When its concentration is 500 ppm, it will affect the young crop roots and The young shoots have an inhibitory effect, so urea should not be used as a seed fertilizer.

Urea can promote cell division and growth, making branches and leaves grow lush.

Our company also has Urea n46 Fertilizer on sale, welcome to consult.

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