AOLANSU High Efficiency DAP Diammonium Phosphate is a controlled-release phosphorus fertilizer developed for modern agriculture. It combines nitrogen and phosphorus nutrition with advanced gelatin/PVA composite coating technology to provide a gradual and stable nutrient supply throughout the crop growth cycle.
With an adjustable nutrient release period of 30-120 days, High Efficiency DAP helps reduce nutrient loss, improve fertilizer utilization efficiency, and reduce the frequency of top-dressing applications. The fertilizer is suitable for rice, wheat, corn, vegetables, fruit trees, and other commercial crops, making it suitable for both large-scale farming and professional agricultural distribution.
Manufactured by Shandong AOLANSU Environmental Protection Technology Co., Ltd., a professional China fertilizer manufacturer and supplier, AOLANSU High Efficiency DAP is produced through controlled fertilizer processing and coating technologies. The company also holds a Hazardous Chemicals Business License, supporting compliant management, storage, handling, and supply of applicable chemical products for domestic and international customers.
Conventional DAP fertilizer can dissolve relatively quickly after application, which may increase the risk of nutrient loss through leaching, runoff, or phosphorus fixation under certain soil and environmental conditions. AOLANSU High Efficiency DAP Diammonium Phosphate is designed to control the nutrient release rate and provide a more stable supply of nitrogen and phosphorus.
Each fertilizer granule is covered with a gelatin/PVA composite coating that acts as a semi-permeable protective layer. After application, soil moisture gradually penetrates the coating through microscopic pores, dissolves the nutrients inside the granule, and allows them to diffuse into the surrounding soil.
The coating formulation and thickness can be adjusted according to crop requirements and target release periods. The standard controlled-release period is 30-120 days, helping match nutrient availability with different crop growth cycles.
The gelatin/PVA composite coating gradually releases nitrogen and phosphorus over an adjustable 30-120 day period. This provides a more continuous nutrient supply and can reduce the need for repeated fertilizer applications.
By slowing nutrient release, High Efficiency DAP helps reduce potential nutrient losses caused by excessive rainfall, irrigation, and other environmental factors, allowing crops to access nutrients over a longer period.
The fertilizer granules are controlled within a 2-4mm particle size range with good hardness and flowability. The uniform particle size supports even fertilizer distribution during manual broadcasting, mechanical spreading, and furrow application.
With moisture content controlled at ≤2.0%, the product offers good storage stability and reduced caking risk under suitable storage conditions. This makes it suitable for warehouse storage, long-distance transportation, and international fertilizer supply.
High Efficiency DAP can be used for rice, wheat, corn, vegetables, fruit trees, and other commercial crops. It is suitable for large-scale agricultural operations where stable phosphorus nutrition and efficient fertilizer management are important.
The release period can be adjusted from 30 to 120 days by modifying the coating formulation and thickness. This allows AOLANSU to provide fertilizer solutions according to crop growth cycles, soil characteristics, climate conditions, and customer requirements.
AOLANSU High Efficiency DAP Diammonium Phosphate uses a specialized gelatin/PVA composite coating process. The coating is evenly applied to the surface of DAP granules to create a controlled-release barrier.
Gelatin provides a biodegradable coating component, while PVA contributes to the formation and control of the protective coating structure. The coating characteristics can be adjusted to control water penetration and nutrient diffusion, helping achieve a stable release profile.
After application, soil moisture gradually penetrates the coating, allowing fertilizer nutrients to dissolve and diffuse outward. This controlled mechanism reduces the rapid nutrient release associated with conventional uncoated DAP and supports more continuous nutrient availability.
| Comparison | High Efficiency DAP | Conventional DAP |
|---|---|---|
| Nutrient Release | Controlled and gradual | Relatively rapid after application |
| Release Period | 30-120 days, adjustable | Primarily dependent on soil and environmental conditions |
| Application Frequency | Can reduce repeated top dressing | Additional applications may be required |
| Nutrient Management | More continuous nutrient availability | Higher initial nutrient release |
| Granule Size | 2-4mm uniform granules | Depends on product specification |
| Mechanical Application | Suitable for mechanical spreading | Suitable depending on granule properties |
AOLANSU implements a comprehensive quality and safety management approach covering raw materials, fertilizer production, coating operations, finished product inspection, and chemical product management. Each batch of High Efficiency DAP undergoes professional inspection before delivery.
Nitrogen and phosphorus content are analyzed to verify that each production batch meets the specified fertilizer formulation and maintains consistent nutrient performance.
The coating layer is inspected for uniformity, coverage, and integrity. These properties are important for maintaining stable water penetration and controlled nutrient release during agricultural application.
Particle size, moisture content, granule hardness, and flowability are tested to ensure the fertilizer remains suitable for storage, transportation, manual application, and mechanized agricultural spreading.
Shandong AOLANSU Environmental Protection Technology Co., Ltd. holds a Hazardous Chemicals Business License. This qualification supports the company's compliant business operations involving applicable chemical products and demonstrates its commitment to standardized chemical product management, storage, handling, and supply.
Before shipment, finished High Efficiency DAP is inspected against the required product specifications. Quality documentation can be provided according to customer and destination-market requirements.
AOLANSU High Efficiency DAP is designed for agricultural applications where nitrogen and phosphorus are essential for crop development and where controlled nutrient release can improve fertilizer management.
High Efficiency DAP can be used for rice, wheat, corn, and other cereal crops. The gradual release of phosphorus and nitrogen supports root establishment and crop development while helping reduce the need for repeated fertilizer applications.
The fertilizer is suitable for vegetables grown in open fields and commercial production systems. Its controlled-release characteristics help maintain nutrient availability during important stages of vegetative growth and crop development.
High Efficiency DAP can be applied in orchards and fruit tree cultivation where long-lasting nutrient availability is required. The controlled-release period can be selected according to crop growth cycles and local soil conditions.
The uniform 2-4mm granules and good flowability make the product suitable for large-scale mechanical fertilizer application. It can be used by agricultural cooperatives, commercial farms, fertilizer distributors, and crop production projects.
| Specification | High Efficiency DAP |
|---|---|
| Product Name | High Efficiency DAP (Diammonium Phosphate) |
| CAS No. | 7783-28-0 |
| Molecular Formula | (NH₄)₂HPO₄ |
| Appearance | White/light gray coated granular fertilizer |
| Granule Size | 2-4mm |
| Total Nutrient (N+P₂O₅) | ≥64% |
| Total Nitrogen (N) | ≥18% |
| Available Phosphorus (P₂O₅) | ≥46% |
| Water-Soluble Phosphorus | ≥90% |
| Moisture Content | ≤2.0% |
| pH Value | 7.5-8.5 |
| Release Period | 30-120 days (Adjustable) |
| Coating Material | Gelatin/PVA composite biodegradable coating |
| Packaging | 50kg PP woven bag with PE inner lining; bulk packaging available |
| Storage Condition | Dry, ventilated and cool warehouse, protected from moisture |
Shandong AOLANSU Environmental Protection Technology Co., Ltd. specializes in fertilizer production and controlled-release fertilizer technologies, providing stable-quality products for international agricultural markets.
AOLANSU holds a Hazardous Chemicals Business License, supporting compliant business operations involving applicable chemical products. This provides international buyers with additional confidence when sourcing chemical fertilizer products from a qualified Chinese supplier.
The gelatin/PVA composite coating provides an adjustable 30-120 day release period, allowing fertilizer performance to be adapted to different crop growth cycles and application requirements.
Strict testing of nutrient content, coating performance, moisture, particle size, hardness, and flowability helps ensure reliable product quality from batch to batch.
High Efficiency DAP is available in export-ready 50kg PP woven bags with PE inner lining and bulk packaging options. The low moisture content and stable granule structure support long-distance transportation and warehouse storage.
AOLANSU can adjust the controlled-release period and product specifications according to crop requirements, soil conditions, climate, application methods, and customer purchasing requirements.
AOLANSU supports international agricultural buyers with professional documentation and technical assistance throughout the purchasing process. Relevant export documents including MSDS, COA, and Certificate of Origin can be provided according to product and destination requirements to support international shipment and customs procedures.
For fertilizer distributors, wholesalers, importers, and large agricultural projects, AOLANSU can provide product information, application guidance, packaging solutions, and customized fertilizer recommendations according to target crops and local farming conditions.
AOLANSU supports trial orders and bulk procurement requirements, providing flexible supply solutions for agricultural distributors, fertilizer wholesalers, importers, and large-scale farming projects.
Relevant export documents such as MSDS, COA, and Certificate of Origin can be provided according to product, destination country, and shipping requirements.
AOLANSU provides technical application guidance and customized fertilizer recommendations according to crop type, soil conditions, climate environment, application method, and desired nutrient release period.
The main difference is the nutrient release rate. Conventional DAP generally dissolves relatively quickly after application, while AOLANSU High Efficiency DAP uses gelatin/PVA composite coating technology to control nutrient release over approximately 30-120 days. This provides a more gradual nitrogen and phosphorus supply and can help reduce repeated top-dressing applications.
High Efficiency DAP is suitable for a wide range of crops, including rice, wheat, corn, vegetables, fruit trees, and other commercial crops. It is particularly suitable for large-scale farming operations where improving nutrient management efficiency and reducing fertilizer application frequency are important.
High Efficiency DAP Diammonium Phosphate should be stored in a dry, ventilated, and cool warehouse away from moisture and incompatible materials. Bags should be kept sealed and protected from direct exposure to rain or high humidity to maintain granule quality and controlled-release performance.
High Efficiency DAP can be used as an alternative to conventional DAP in many agricultural applications. However, the recommended application rate and method depend on crop type, soil nutrient status, climate, farming practices, and local agronomic recommendations.
Yes. AOLANSU can adjust the coating formulation and coating thickness to provide different controlled-release periods within the available product range. The standard release period is 30-120 days, with the specific performance selected according to crop requirements and customer needs.
Yes. Shandong AOLANSU Environmental Protection Technology Co., Ltd. holds a Hazardous Chemicals Business License (危险化学品经营许可证). This supports the company's compliant business operations and standardized management of applicable chemical products.
AOLANSU can provide relevant export documentation such as MSDS, COA, and Certificate of Origin according to the product, destination country, and customer's shipping requirements.
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