1、A plan for efficient use of nitrogen fertilizers

A global analysis finds that nitrogen fertilizers could be used more efficiently if their international distribution across croplands was altered — a measure that would also decrease nitrogen...

2、Environmentally Friendly Slow

The release profiles of urea, ammonium sulfate, and ammonium chloride as nitrogen fertilizer substrates were determined in soil. To further compare the release profiles of nitrogen from different fertilizer substrates, a mathematical model for nutrient release from the coated fertilizer was applied to calculate the diffusion coefficient D.

3、Effects of slow or controlled release fertilizer types and fertilization modes on yield and quality of rice

Introduction Nitrogen (N) is an essential nutrient for all plants, and the application of N fertilizer plays an important role in rice (Oryza sativa L.) yield and quality (Ding et al. 2014; Jiang et al. 2016).

Roles of nitrogen, phosphorus, and potassium fertilizers in carbon sequestration in a Chinese agricultural ecosystem

To enhance cereal production and meet the escalating food demands of the increasingly affluent population in China, the application of nitrogen (N), phosphorus (P), and potassium (K) fertilizers to agricultural soils has risen significantly.

Improving formulated nitrogen, phosphorus and potassium compound fertilizer using zeolite

There is a potential for compound fertilizer with zeolite to improve nitrogen efficiency by lowering ammonia volatilization and increasing accumulation of exchangeable NH 4 and NO 3.

Effects of single basal application of coated compound fertilizer on yield and nitrogen use efficiency in double

The present study investigated a low-cost, coated compound controlled-release fertilizer, “Xiang Nong Da” (XND), comparing yield and N use efficiency of test rice cultivars treated with XND or a conventional compound fertilizer with two applications, XND supplied 20% fewer nutrients in the test.

Cumulative release characteristics of controlled

Soil inorganic nitrogen contents significantly increased by using PCU instead of urea, and the same trend was observed with soil available potassium contents, which also had increased rates.

Evaluation of controlled

Evaluation of compound controlled-release fertilizer (CRF) in the soil is essential in order to establish an appropriate soil management and fertilizer application technique.

Synthetic fertilizer management for China’s cereal crops has reduced N2O emissions since the early 2000s

China has implemented a soil testing and fertilizer recommendation (STFR) program to reduce the over-usage of synthetic nitrogen (N) fertilizer on cereal crops since the late 1990s.

Incorporation of humic

This problem is sometimes complicated to solve depending on fertilizer formulation, but, at least so far, coating is in our opinion the best technical option to assure the agronomic efficiency of these types of compounds incorporated into NPK compound fertilizer granules when applied to the field.

Compound fertilizers are composite materials containing multiple nutrients, typically used to complement the deficiencies of single-nutrient fertilizers and enhance soil fertility. When selecting a nitrogen fertilizer, factors such as effectiveness, cost, environmental impact, and compatibility with crop requirements should be considered. Below are several commonly used nitrogen fertilizers and their characteristics:

1. Urea: Urea is one of the most widely used nitrogen fertilizers, containing a high concentration of nitrogen (N) and trace amounts of phosphorus (P) and potassium (K). It offers advantages such as low cost, ease of storage, and transportation. urea decomposes relatively quickly, requiring regular application to maintain effective nitrogen levels in the soil. It is suitable for most crops, especially those needing rapid nitrogen supply, such as corn, cotton, and rice.

2. Ammonium Nitrate: This is a compound fertilizer containing nitrogen, phosphorus, and potassium, with a high nitrogen content. It is suitable for various crops, including fruit trees, vegetables, and flowers. While ammonium nitrate is relatively expensive, its fast-acting properties reduce the frequency of applications.

3. Nitrate-Based Nitrogen Fertilizers: These fertilizers, often in the form of sulfates or nitrates (e.g., ammonium sulfate, calcium nitrate), are readily absorbed by plants but release nitrogen slowly, making them ideal for base applications.

4. Ammonia (Ammonium Hydroxide): Ammonia is a liquid fertilizer with a high nitrogen content, applied directly to the soil. Despite its higher cost, it provides sustained nitrogen release and is suitable for crops requiring rapid nitrogen replenishment.

5. Amino Acid Fertilizers: These contain amino acids essential for plant growth, enhancing soil microbial activity and nutrient availability. They are particularly beneficial for crops with specific microbial requirements, such as certain vegetables and fruits.

Key Considerations for Selecting Nitrogen Fertilizers:

1. Crop Requirements: Different crops have varying nitrogen needs, so choose fertilizers based on growth stages and nitrogen demands.
2. Soil Conditions: Soil pH, organic matter content, texture, and drainage affect fertilizer efficiency.
3. Environmental Impact: Opt for eco-friendly options like organic or bio-fertilizers to minimize harm to the environment and human health.
4. Cost-Effectiveness: Balance cost and benefits to select economically viable fertilizers.
5. Fertilization Techniques: Choose appropriate formulations for application methods (e.g., base fertilization, topdressing, foliar spraying).
6. Sustainability: Prioritize environmentally friendly compounds to reduce pollution.

selecting the optimal nitrogen fertilizer requires综合考虑its chemical composition, physical properties, crop needs, soil conditions, and environmental protection. Rational fertilization can improve agricultural productivity and crop yields while safeguarding the ecosystem.