1、Long

Controlled-release urea treatments improved rice yield by 11.9% and 44.6% compared to treatments with urea and no N fertilizer, respectively. Random forest analysis indicated that enzyme activity was the main factor affecting rice yield.

2、Blended controlled

One-time application of blended controlled-release nitrogen fertilizer (CRN) has the potential to solve the difficulty of top-dressing fertilizer in the cultivation of rice and reduce the cost of CRN fertilizer application.

3、Effects of controlled release fertilizer on rice yield and

Results showed that rice grain yields of CRF treatments increased significantly by 8.57% to 12.45% for the early rice and 9.64% to 11.49% for the late rice respectively compared to the compounds treatment.

Effects of controlled release fertilizer on growth and nutrient

The application of controlled-release fertilizer was found to accelerate seedling recovery and prolong the tillering and heading stages. In terms of main agronomic traits, plant height varied from 101.9 to 121.2 cm, and the seed setting rate ranged from 66.90% to 74.22%.

Application of slow

Slow-controlled release fertilizers are experiencing a popularity in rice cultivation due to their effectiveness in yield and quality with low environmental costs. However, the underlying mechanism by which these fertilizers regulate grain quality remains inadequately understood.

Effects of Controlled

The replacement of common urea with controlled-release nitrogen fertilizer can improve rice yield and quality, but the effect of controlled-release nitrogen fertilizer on rice yield and quality at different release stages is still unclear.

Lower dose of controlled/slow release fertilizer with higher rice yield

Application of slow/controlled release fertilizer (SCRF) in paddies is an efficient strategy to ensure rice yield and to improve N utilization. Notably, the effects of SCRF often vary with the types and dosages of SCRF, rice variety, and soil properties.

Effects of Controlled Release Fertilizer Application on Double

Therefore, one time use of controlled release fertilizer regardless of the quantity and reduce the dosage of 20%, it could reach the recommended fertilization production levels, and could significantly increase the nitrogen content and uptake in rice.

Effects of controlled release fertilizer on growth and nutrient

In conclusion, 48% controlled release fertilizer was beneficial for increasing mid-season rice yield. This study provides a reference for the promotion and application of controlled release fertilizer in agricultural production.

Effects of controlled release fertilizer ratio on yield formation and

Controlled-release fertilizer was mixed from four different release periods (40, 80, 100, and 120 days) at a ratio of 1:4 to form three mixing modes (40+80, 40+100, and 40+120).

Controlled-release fertilizer (CRF) for rice represents a modern agricultural technology that regulates nutrient release rates and duration in soil through specialized chemical or physical methods. This approach more effectively meets the nutritional demands of rice during its growth cycle. The following sections analyze the advantages, application effects, and potential challenges of CRF in rice farming.

I. Advantages Analysis

1. Enhanced Fertilizer Use Efficiency CRF adjusts nutrient release based on crop needs, preventing resource waste from excessive single-application fertilization. Its slow, sustained release reduces nutrient loss and improves utilization efficiency.

2. Improved Soil Structure CRF mitigates soil structure damage caused by rapid fertilization, avoiding issues like compaction. Long-term use maintains soil aeration and water-holding capacity, benefiting root development.

3. Promotes Healthy Plant Growth Stable and balanced nutrient supply strengthens rice’s stress resistance (e.g., drought, disease) by ensuring optimal absorption.

4. Reduces Environmental Pollution Traditional fertilizers often lead to water eutrophication due to rapid releases. CRF minimizes such environmental risks, protecting ecosystems.

5. Economic Benefits CRF lowers fertilizer costs while improving crop yield and quality, potentially increasing farmer income.

6. Convenient Management Clear labeling and user-friendly designs simplify scientific fertilization and management for farmers.

7. Adaptable to Crop Needs CRF formulations can be tailored to match nutrient demands at different growth stages, suiting various crops.

8. Supports Sustainable Agriculture CRF reduces reliance on synthetic fertilizers, aligning with sustainable farming practices.

II. Application Effects

1. Precise Fertilization CRF packaging typically includes dosage and timing guidelines, enabling farmers to avoid over- or under-application.

2. Time Savings The slow-release properties of CRF reduce the need for frequent top-dressing, streamlining labor.

3. Improved Crop Quality Stable nutrient supply enhances rice qualities, such as grain taste and nutritional value.

4. Disease and Pest Resistance Balanced nutrition boosts rice immunity, reducing pest and disease incidence.

5. Extended Growth Period Optimal nutrient delivery supports longer growth cycles, providing flexibility for field management and harvest planning.

III. Potential Challenges

1. Cost Barriers Higher production costs make CRF more expensive upfront, raising concerns about affordability for farmers.

2. Technical Expertise Required Effective use demands knowledge of application methods and local conditions, necessitating farmer training.

3. Environmental Variability CRF performance may vary across regions or soil types, requiring careful product selection.

4. Market Adoption Traditional fertilization habits pose challenges to CRF uptake, especially in regions resistant to technological shifts.

5. Policy and Subsidy Gaps Limited government support and financial incentives hinder widespread adoption of CRF.

controlled-release fertilizer offers significant environmental and economic benefits for rice farming. cost and adaptability remain key hurdles. With advancements in agricultural technology and improved policy frameworks, CRF is poised to play a larger role in sustainable agriculture.