1、Improving nitrogen fertilizer use efficiency and minimizing losses and

Overall, the study showed that reducing N 2 O and NH 3 emissions is important for increasing N utilization and mitigating global warming. Reducing N rate and using synergists can address the joint problems of environmental pollution and agricultural efficiency.

2、Improving Fertilizer Use Efficiency—Methods and Strategies for

FUE indices are mainly used to assess the effectiveness of nitrogen (N), phosphorus (P), and potassium (K) fertilization. This is due to the low efficiency of use of NPK fertilizers, their environmental side effects and also, in relation to P, limited natural resources.

3、Data

Here we analyse a novel dataset of more than 31,000 farmer fields spanning the Terai of Nepal, Bangladesh’s floodplains and four major rice-producing regions of India. Results indicate that 55% of...

Advances in Nitrogen Use Efficiency of 15N

We emphasize studies utilizing 15 N-enriched fertilizers. Unlike previous studies that addressed isolated aspects of nitrogen dynamics, this review integrates findings on nitrogen transformation pathways, recovery rates, and environmental losses.

Nitrogen use efficiency—a key to enhance crop productivity under a

Therefore, enhancing nitrogen use efficiency (NUE) is critical in crop improvement programs and agronomic management systems.

Improving Fertilizer Use Efficiency—Methods and Strategies for the

FUE indices are mainly used to assess the effectiveness of nitrogen (N), phosphorus (P), and potassium (K) fertilization. This is due to the low efficiency of use of NPK fertilizers, their environmental side effects and also, in relation to P, limited natural resources.

Optimizing nitrogen fertilizer use for more grain and less pollution

Potential for reduction of nitrogen (N) fertilizer and improvement of nitrogen use efficiency (NUE) under optimal N rate (RN) and best N management (BN), compared with that under farmers' conventional N application rate (FN).

Nitrogen Fertilizer Use Efficiency: Research Progress

The aim is to provide a scientific basis for improving crop nitrogen fertilizer use efficiency, reducing resource waste, decreasing environmental pollution and increasing crop yield.

A Review of Methods to Improve Nitrogen Use Efficiency in

In this review, we discuss various factors controlling N use efficiency (NUE) and the methods which can improve NUE in agriculture minimizing environmental losses.

Managing Fertilizer Rates and Tillage Depth to Improve Nitrogen Use

By aligning N application rates with crop requirements, this study offers a roadmap for improving nitrogen use efficiency, conserving soil health, and reducing N losses, thereby contributing to both agricultural sustainability and environmental conservation.

The technical measures to enhance nitrogen fertilizer use efficiency include the following aspects:

1. Rational Fertilization: Develop fertilization plans based on crop growth stages and soil fertility conditions. For example, apply an appropriate amount of nitrogen fertilizer during the seedling and flowering stages, while increasing phosphorus and potassium fertilizers during fruit expansion and maturation. Avoid excessive fertilization to prevent nitrogen leaching, volatilization, and loss, which reduce nitrogen use efficiency.

2. Deep Placement or Full-Layer Fertilization: Apply nitrogen fertilizer to soil layers where roots are extensively distributed (e.g., 10–20 cm deep). This method improves nitrogen uptake efficiency. Additionally, deep placement or full-layer fertilization promotes root growth downward, enhancing the roots’ ability to absorb soil nutrients.

3. Combine Organic and Chemical Fertilizers: Organic fertilizers contain abundant organic matter and microorganisms, which improve soil structure and fertility. Combining organic and chemical fertilizers boosts nutrient absorption by crops and increases nitrogen use efficiency.

4. Adjust Sowing Time: Optimize sowing schedules to ensure crops fully absorb nutrients during their best growth periods. For instance, sowing in early spring allows crops to complete growth before winter, maximizing the use of spring nitrogen sources.

5. Rational Crop Rotation and Intercropping: Rotation and intercropping reduce pest and disease incidence, enhance soil fertility, and promote crop growth. These practices increase beneficial microorganisms in the soil, thereby improving nitrogen use efficiency.

6. Optimized Irrigation: Apply timely and appropriate irrigation to maintain soil moisture, facilitating nutrient absorption. Excessive irrigation leads to soil salinity accumulation, hinders crop growth, and lowers nitrogen use efficiency.

7. Soil Amendment: Improve soil structure and physicochemical properties through measures such as deep loosening, plowing, and liming. These practices enhance soil fertility and nitrogen use efficiency.

8. Balanced Nitrogen Application: Adjust nitrogen fertilizer rates based on crop needs and soil fertility. Reduce nitrogen input in high-fertility soils and increase it in low-fertility soils. Avoid overapplication, which can cause excessive vegetative growth and reduce efficiency.

9. Micronutrient Fertilization: Micronutrients are essential for crop growth. Proper application of micronutrient fertilizers supplements crop nutritional needs and improves nitrogen use efficiency.

10. Scientific Fertilization Methods: Use precise methods like drip irrigation or fertigation to ensure even distribution and minimize nitrogen loss, volatilization, and environmental pollution.

improving nitrogen use efficiency requires comprehensive consideration of multiple factors and integrated measures. In actual agricultural production, these techniques should be flexibly applied based on specific conditions to achieve optimal fertilization outcomes.