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Granular urea is a form of urea, referring to urea with a particle size between 2.8 and 4.75mm. The particle size of high-quality products is required to be greater than 93%.
It is a solid nitrogen fertilizer that exists in particle form. Generally speaking, it contains about 46% nitrogen.
Most granular urea is produced using the Double Drum Fluidized Bed granulation process, using small granular urea products as seed crystals. After special treatment, granular urea is formed into large particles with many pores.
The production technology of large particle urea is mature, the process is simple, the equipment investment is low, and the process is environmentally friendly.
Granular urea has a larger particle size, several times larger than ordinary urea particles, making it easier to combine with soil. After being applied to soil, the dissolution rate is slightly slower. In addition, the single particle weight is more significant. When applied in paddy fields, it can sink deeper into the soil, reducing fertilizer loss and improving utilization efficiency.
It has low dust content, high compressive strength, and good fluidity. It can be transported in bulk, is not easily broken or clumped, and is suitable for mechanized fertilization.
In the production process, the evaporation rate of urine can reach 95% -96%, so the urea content in granular urea is much lower than that in granular urea, which is beneficial for crops. Apply large urea particles evenly and avoid sticking to leaves and causing leaf burning.
It has low ammonia nitrogen content, and the amount of ammonia volatilization during transportation, storage, and use is relatively small, resulting in minimal impact on the environment and human health.
It has comprehensive benefits, with a balanced fertilizer supply and reduced wastewater and exhaust emissions during use. It has good application prospects in improving fertilizer utilization and reducing environmental pollution.
Fertilizer:
Granular urea is the primary source of nitrogen in agricultural fertilizers. Nitrogen is crucial for plant growth and plays a vital role in forming proteins, nucleic acids, and chlorophyll. In soil, urea hydrolyzes into ammonium ions, which are easily absorbed by plants. This process provides a stable nitrogen supply, promotes healthy plant growth, and increases crop yield. For example, granular urea can be applied at the appropriate time in wheat and corn fields to ensure optimal growth and productivity.
Soil improvement:
It helps to improve soil fertility by increasing the soil’s nitrogen content. This is particularly beneficial in areas with nitrogen deficiency in the soil. It can be used to balance the pH value of soil, making it more suitable for plant growth. In addition, it can enhance the soil’s water-holding capacity, which is crucial for the normal development of plant roots.
Improve crop yields
As a high nitrogen fertilizer, granular urea can provide sufficient nitrogen nutrition for crops, promote plant growth and development, and thus increase crop yield. Large particle urea can also regulate crops’ growth rhythm, improving their quality and marketability.
Improve the effectiveness of fertilization
It can slow down fertilizer efficiency, increase plant utilization of nitrogen fertilizer, reduce nitrogen fertilizer loss and volatilization, and improve fertilization effectiveness. In long-term fertilization, large particle urea can also reduce the frequency of fertilizer application, decreasing labour input and cost expenditure.
Improve soil environment
It can improve soil fertility, enhance soil water retention and aeration, promote soil activity, strengthen soil microbial ecological functions, and improve soil physical, chemical, and biological properties.
Reasonably apply according to crop demand
The application amount of large particle urea should be comprehensively considered based on factors such as crop variety, growth period, geographical location, and meteorological conditions. The application amount and time should be reasonably determined to improve fertilization efficiency and increase yield and income.
Combination of top dressing and whole Application
It is suitable for long-term fertilization. It can be applied to the soil during land preparation and cultivation to dissolve the fertilizer fully and improve the fertilization effect. During the growth and development period, topdressing can also be used for supplementation, with quantitative addition based on the crop’s nitrogen requirements.
Use in combination with other fertilizers
It can also be used with other fertilizers, such as diammonium phosphate, compound fertilizers, etc., to compensate for the shortcomings of different fertilizers and optimize fertilization effects.
It is used to produce various chemicals, such as urea-formaldehyde resin. This resin is used to manufacture plastics, adhesives, and laminates. Urea reacts with formaldehyde to form a cross-linked structure, endowing the resin with strength and durability. It can also be used as a raw material for synthesizing other nitrogen-containing compounds when producing urea-based fertilizers.
In animal husbandry, granular urea is used as a non-protein nitrogen source. It can be added to animal feed, especially for ruminants. Bacteria in the rumen break down urea into ammonia, which is then used to synthesize proteins. This helps to increase the protein content in animal diets and promote growth and development. However, it is necessary to carefully adjust the amount of urea added to avoid ammonia toxicity.
Granular urea can be used in water treatment processes. It can be used to remove nitrogen from wastewater. When added to wastewater, urea reacts with nitrate and nitrite to convert it into nitrogen gas. This process helps to reduce the nitrogen content in water to prevent eutrophication and other water-related issues.
Granular urea can be used as a snow-melting agent. It lowers the freezing point of water, making snow melt faster. This is useful in areas with severe snow accumulation, such as roads and sidewalks. However, its usage should be carefully monitored as it may also impact the environment.
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