1、Improving yield and nitrogen use efficiency through alternative

The meta-analysis results clearly demonstrate that appropriate alternative fertilization options can increase both rice yield and nitrogen use efficiency, and that conventional chemical fertilizers can be partially replaced with alternative ones without negatively affecting rice productivity.

2、Frontiers

In summary, optimizing organic fertilizer combined with urea practices was a win-win strategy to improve grain yield and quality while reducing CH 4 emissions in the rice cropping system. This study provides new insights into the fertilizer types on CH4 emission and rice production of rice cropping systems.

3、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...

Improving the yield and nitrogen use efficiency of hybrid rice through

Results and discussion: Grain yield and NUE were positively correlated with increases in photosynthetic production, flag leaf net photosynthetic rate (Pn), root activity, N transport, and grain-filling characteristics.

Application of Nitrogenous Fertilizer in Rice Production: A Review

Nitrogen (N) management is of great importance in rice production, but most previous studies have focused on high N rates and there is a lack of research on management plans under a...

Optimizing Nitrogen Fertilizer Rate and Investigating Mechanism Driving

Investigating the factors influencing rice grain yield (GY) is critical for optimizing nitrogen (N) management and enhancing resource use efficiency in rice cultivation.

Optimal nitrogen rate strategy for sustainable rice production

Herein, using a combination of bottom-up and top-down strategies, we evaluate these two optimal N application strategies for rice systems at the subregional scale to cover these knowledge gaps...

Improving nitrogen use efficiency of rice crop through an optimized

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

Urea

Rice production remained high even with reduced urea due to Azolla ’s advantage over chemical fertilizers: Azolla minimizes the risk of nitrate leaching into water, improves soil health, suppresses weed, and provides other essential nutrients like phosphorus and potassium (Marzouk et al., 2023).

Maximizing Rice Yield with Urea Fertilizer: Insights into Nitrogen

A: Urea, as a source of nitrogen, is particularly effective for rice plants due to its high nitrogen content. When applied properly, it has been shown to increase rice grain yield more significantly than other forms of nitrogen fertilizers.

In agricultural production, the choice of fertilizer is crucial for improving crop yields and quality. Both high-nitrogen fertilizers and urea are commonly used nitrogen (N) sources, but they differ in application effects, cost-efficiency, and environmental impact. Below is a detailed comparison of these two fertilizers to help farmers make more informed decisions.

1. Classification and Function of Nitrogen Fertilizers

Nitrogen is one of the three essential macronutrients for plant growth, playing a vital role in plant development, yield formation, and overall health. Nitrogen fertilizers are divided into organic and chemical categories. Chemical fertilizers include nitrogen, phosphorus, and potassium varieties, among which nitrogen fertilizers are the most critical. They provide rapid nitrogen supplementation, promoting fast plant growth.

2. Comparing High-Nitrogen Fertilizers and Urea

a. Composition and Characteristics

• High-Nitrogen Fertilizers: These contain a high nitrogen concentration, offering quick and substantial nitrogen supply for rapidly growing crops like wheat and maize. Their advantages include fast nitrogen release, which supports rapid rooting, sprouting, and tillering. excessive use can lead to soil salinization, structural degradation, reduced microbial activity, and even root burn.
• Urea: A lower-nitrogen fertilizer with stable and slow-release properties, suitable as a base or topdressing fertilizer. Its strengths lie in consistent nitrogen delivery over time, benefiting diverse crops. its slower release may not meet the needs of fast-growing plants.

b. Application Methods and Efficiency

• High-Nitrogen Fertilizers: Require precise dosage control to avoid soil salinization and nutrient imbalance. Efficacy depends on soil conditions, crop types, and fertilization techniques.
• Urea: Easy to apply via surface spreading or furrowing, but timing and dosage must align with crop demands and soil conditions. Nitrogen uptake efficiency and soil environment significantly impact results.

c. Economic and Cost Considerations

• High-Nitrogen Fertilizers: Generally pricier, but their rapid effects may offer long-term value. Overuse, risks escalating costs due to soil damage.
• Urea: More affordable with persistent effects, potentially delivering better economic returns. its performance is highly sensitive to soil and crop factors, requiring careful management.

d. Environmental Impact

• High-Nitrogen Fertilizers: Excessive use can harm soil health by increasing salinity, altering structure, and suppressing microorganisms. Environmental concerns focus on soil ecosystems.
• Urea: Lower environmental risk due to moderate nitrogen content and slow release. Impacts mainly relate to soil health and crop responses.

3. Comprehensive Analysis and Recommendations

a. Crop Needs and Soil Conditions

• Prioritize crop-specific requirements (e.g., growth stage, nutrient preferences) and soil factors (fertility, pH, organic matter). For fast-growing crops like wheat and maize, opt for high-nitrogen fertilizers; for steady-demand crops like soybeans and rapeseed, urea is preferable.

b. Fertilization Strategies

• Base Fertilization: Use high-nitrogen fertilizers to support early growth.
• Topdressing: Adjust based on crop needs and soil tests, choosing between high-nitrogen options or urea. Emphasize proper timing and methods to avoid overapplication.

c. Environmental Sustainability

• Minimize ecological harm by optimizing dosages, adopting eco-friendly fertilizers, and reducing runoff/pollution. Enhance crop resilience (drought/flood tolerance, pest resistance) to promote sustainable agriculture.

Both high-nitrogen fertilizers and urea have distinct advantages and limitations. Farmers should consider crop type, soil conditions, fertilization practices, and environmental protection when choosing. With scientific management and sustainability measures, agricultural productivity can be optimized while ensuring safety and ecological balance.