1、Data

Increasing nitrogen use efficiency (NUE) in agricultural production mitigates climate change, limits water pollution and reduces fertilizer subsidy costs. Nevertheless, strategies for...

2、Optimizing nitrogen fertilizer application in Chinese rice production

Optimizing the nitrogen (N) fertilizer use is the key to facilitating the sustainable development of agricultural systems. In this study, a DeNitrification–DeComposition model was used to analyze the effects of N fertilization on yield, profit, and reactive N losses in single-season rice production of China.

3、Optimizing nitrogen fertilizer application protocol to minimize the

Direct-seeded rice is popular for saving labor, simplifying cultivation, and reducing costs, but it involves new challenges of shallow root systems and short growth periods that require optimizing the time, frequency and proportion of nitrogen (N) fertilizer application.

4、Optimizing Nitrogen Fertilizer Management Enhances Rice Yield, Dry

In recent years, many scholars have proposed strategies to optimize N fertilizer management and conducted experiments on field production, such as N fertilizer management at specific locations, integrated soil–crop system management, and chasing spike fertilizer.

Nitrogen fertilization application strategies improve yield of the rice

The results showed that N fertilization strategies could improve the nitrogen use efficiency and yield of rice, but the response of different rice varieties to N fertilizer strategies...

Full root

Currently, several new nitrogen fertilizer application methods are gradually replacing traditional manual broadcasting, including rotary tillage nitrogen fertilizer method, layered nitrogen fertilizer method (Zeng et al., 2020), and side-deep banding nitrogen fertilizer methods (Zhang et al., 2021).

Techniques for Improving Nitrogen Use Efficiency in Rice

Increasing NUE reduces nitrogen fertilizer consumption, prevents N fertilizer loss and rice productivity. In the present study, fertilizer types, water irrigation management, and rice cultivars are the factors for improving nitrogen use efficiency in rice.

Nitrogen fertilization application strategies improve yield of the rice

The results showed that N fertilization strategies could improve the nitrogen use efficiency and yield of rice, but the response of different rice varieties to N fertilizer strategies was different.

Determining optimal nitrogen management to improve rice yield, quality

In the present study, a 2-year field experiment was conducted to identify optimal N fertilizer management practices that resulted in high-yield, high-quality and high-NUE by using the technique for order preference by similarity to an ideal solution (TOPSIS) with entropy weight (EW) method.

Improving nitrogen use efficiency of rice crop through an optimized

We hypothesized that NUE could be improved by optimizing the root system.

Approaches to Enhancing Nitrogen Fertilizer Efficiency in Rice

Nitrogen is one of the essential nutrient elements for plant growth and plays a critical role in rice development. excessive application of nitrogen fertilizer can lead to leaching and denitrification in the soil, thereby reducing nitrogen use efficiency. improving nitrogen fertilizer efficiency in rice cultivation is a significant issue worth exploring. The following methods can enhance nitrogen fertilizer utilization in rice:

1. Rational Fertilization: Develop a scientific fertilization plan based on soil fertility and rice growth stages. Generally, basal fertilizer should account for 60%-70% of the annual total, while topdressing should constitute 20%-30%. When applying nitrogen fertilizers, use slow-release or controlled-release formulations to minimize nitrogen volatilization losses.

2. Deep Placement with Soil Covering: Applying nitrogen fertilizer at deeper soil layers (typically 20-30 cm) effectively prevents nitrogen volatilization and leaching, improving its efficiency. This practice also promotes root system expansion, enhancing the plant's ability to absorb soil nutrients.

3. Balanced NPK Application: Combining nitrogen with phosphorus and potassium fertilizers optimizes rice's nitrogen uptake. Studies show that an NPK ratio of 1:0.5:0.5 improves nitrogen utilization efficiency.

4. Organic Fertilizer Supplementation: Organic fertilizers, rich in organic matter and microorganisms, improve soil structure, water-holding capacity, and nutrient retention. They also provide energy for microbial activity, facilitating nitrogen transformation and uptake.

5. Optimized Irrigation: Proper water management is crucial for nitrogen absorption. Timely irrigation after fertilization reduces soil moisture, minimizing leaching and denitrification. Additionally, suitable irrigation warms the soil, stimulates root growth, and strengthens nitrogen uptake.

6. Adjusted Planting Density: Increasing planting density appropriately boosts biomass per unit area and nitrogen efficiency. overcrowding may impair air circulation, increase pest risks, and counteract benefits. Thus, density adjustments must consider climate and soil conditions.

7. Crop Rotation Practices: Rotating crops on the same land improves soil structure and nutrient balance, enhancing fertility. Rotation reduces pest incidence, lowers chemical pesticide use, and supports environmental sustainability. It also enriches beneficial microbes, aiding nitrogen cycling.

8. Scientific Fertilization Timing: Tailor fertilization schedules to rice growth stages and soil conditions. Apply nitrogen during key periods like tillering, jointing, and heading, but limit it during booting and grain filling to prevent delayed maturity. Cease nitrogen application one month before harvest to ensure grain plumpness.

9. Soil Nutrient Monitoring: Regular soil testing tracks fertility levels, guiding timely fertilization adjustments. Measuring soil nitrogen helps identify deficiencies or excesses, enabling precise interventions.

10. Research and Innovation: Continuous research on nitrogen efficiency in rice is vital. Through experiments and demonstrations, locally adapted fertilization strategies can be developed, providing farmers with evidence-based recommendations.

enhancing rice nitrogen fertilizer efficiency requires an integrated approach combining rational fertilization, deep placement, balanced nutrient application, organic amendments, optimized irrigation, adjusted planting density, scientific timing, soil monitoring, and ongoing research. These measures collectively promote sustainable agricultural production by maximizing nitrogen use efficiency.