Nitrogenous nitrogen fertilizers are commonly used in agricultural production to provide essential nitrogen for plant growth. due to processes such as nitrogen fixation, nitrification, and denitrification in the soil, the utilization efficiency of nitrogen is often limited. Enhancing the efficiency of nitrogen fertilizers is a critical pathway to improving agricultural yield and quality. The following methods can help achieve this goal:

1. Rational Application of Nitrogen Fertilizers: The use of nitrogen fertilizers should be based on crop requirements and soil conditions to avoid overapplication. Applying fertilizers through deep placement or furrow application can reduce nitrogen losses.

2. Increase Organic Fertilizer Application: Organic matter in fertilizers improves soil structure and water-retaining capacity, promoting root development and nitrogen uptake. Additionally, organic fertilizers enhance microbial activity, facilitating nitrogen transformation and utilization.

3. Implement Crop Rotation: Rotation alters soil microbial communities and reduces harmful substances, thereby improving nitrogen absorption capacity.

4. Optimize Irrigation Practices: Proper irrigation regulates soil moisture, supports root growth, and minimizes nitrogen loss, thereby increasing nitrogen use efficiency.

5. Timely Fertilization: Apply nitrogen fertilizers according to crop growth stages and soil conditions, avoiding excessive nitrogen during peak growth periods.

6. Use Slow-/Controlled-Release Fertilizers: These fertilizers release nitrogen gradually, ensuring a steady supply to plants and reducing losses.

7. Apply Biological Fertilizers: Bio-fertilizers contain beneficial microorganisms that improve soil fertility and enhance nitrogen utilization.

8. Adopt Foliar Spraying: This technique involves applying nutrients directly to leaves, allowing plants to absorb nitrogen more efficiently.

9. Supplement Micronutrient Fertilizers: Micronutrient fertilizers meet plants’ elemental needs, complementing nitrogen uptake and improving overall efficiency.

10. Use Plant Growth Regulators: Regulators like gibberellin promote root development, enhancing nitrogen absorption capacity.

improving nitrogen fertilizer efficiency requires a holistic approach, including rational application, organic amendments, crop rotation, optimized irrigation, timely fertilization, slow-release formulations, biological fertilizers, foliar spraying, micronutrient supplements, and growth regulators. By integrating these strategies, agricultural productivity and economic benefits can be significantly enhanced.