Urea is a nitrogen fertilizer widely used in agriculture with the chemical formula CO(NH2)2. Not only is it an efficient nitrogen source, its production process and significant impact on crop growth also make it important in agriculture. This article will give you an in-depth understanding of all aspects of urea fertilizer. **Chemical composition and production process of urea** Urea is an organic compound synthesized from ammonia and carbon dioxide under high temperature and high pressure conditions. Its production process mainly includes three steps: synthesis, deamination and granulation. Through modern production equipment, large-scale and efficient production can be achieved to ensure product quality and consistency. **The action mechanism of urea fertilizer** As a fast-acting nitrogen fertilizer, urea breaks down in the soil and releases ammonia, which is absorbed by plant roots and promotes photosynthesis and protein synthesis. Research shows that after urea is applied, crop yields increase by an average of 15% compared to the control group! (Data source: an agricultural research institution) **Advantages and Limitations of Urea Fertilizer** Advantages of urea fertilizer include: 1. High efficiency: nitrogen content is as high as 46% and high absorption rate. 2. Stability: stable storage, easy to transport and use. 3. Economical: The production cost is relatively low, the price is moderate, and it is suitable for large-scale agricultural production. However, urea fertilizer also has its limitations: 1. Volatile loss: Under high temperature and high humidity conditions, it easily volatilizes into ammonia, causing nitrogen loss. 2. Soil acidification: Long-term and large-scale application may lead to soil acidification and affect soil health. **How ​​to apply urea fertilizer reasonably** To optimize crop yields, rational application of urea fertilizer is crucial. Here are some practical suggestions: 1. **Fractional application**: Apply urea in multiple times to reduce the amount of single application and reduce nitrogen loss. If you apply part of it before sowing, then topdress during the growing season. 2. **Combined with organic fertilizer**: Apply with organic fertilizer to improve soil structure and enhance fertilizer retention capacity. 3. **Timely application**: Choose the best fertilization time according to the crop growth stage and weather conditions. The effect will be better if applied after rain, because moisture helps the conversion and absorption of urea. Research shows that in northern arid areas, divided application of urea can effectively improve crop yields and nitrogen use efficiency! Rational application of urea fertilizer can not only increase yields, but also reduce environmental pollution and promote sustainable agricultural development. **Conclusion** The application of urea fertilizer in agriculture is undoubtedly revolutionary. Through scientific application, it can not only significantly increase crop yields, but also maintain soil health and provide strong support for sustainable agricultural development. Farmers, try to use urea fertilizer rationally to welcome the harvest season! 🌾 Let us work together to contribute to agricultural development! If you have any questions or need further guidance, please feel free to contact your local agricultural experts.