Shandong AOLANSU Environmental Technology Co., Ltd. is a professional Agricultural DAP Fertilizer manufacturer and supplier in China, specializing in the production and export of high-quality Diammonium Phosphate (DAP) fertilizer for global agricultural markets.
Located in China's major agrochemical production region, AOLANSU has many years of experience in manufacturing granular DAP fertilizer. The factory uses high-purity phosphoric acid and liquid ammonia as primary raw materials, with strict control throughout ammoniation, granulation, drying, screening, and quality inspection processes.
Every batch of Agricultural DAP Fertilizer is tested before shipment, and a Certificate of Analysis (COA) is provided to ensure stable nutrient content and reliable product performance. AOLANSU has obtained ISO 9001 Quality Management System certification and ISO 14001 Environmental Management System certification, ensuring consistent production standards and environmentally responsible manufacturing.
With mature production technology, stable supply capability, and international export experience, AOLANSU provides reliable DAP fertilizer solutions for fertilizer distributors, agricultural suppliers, and large-scale farming projects worldwide.
Agricultural DAP Fertilizer, also called Diammonium Phosphate Fertilizer, is a compound phosphate fertilizer containing nitrogen and phosphorus. Its chemical formula is (NH₄)₂HPO₄, normally containing approximately 18% nitrogen (N) and 46% phosphorus pentoxide (P₂O₅).
DAP fertilizer is widely used as a base fertilizer because phosphorus plays an important role in root development, plant growth, flowering, and crop maturity. The high water-soluble phosphorus content allows crops to absorb nutrients efficiently after application.
Compared with single nutrient fertilizers, granular Agricultural DAP Fertilizer provides balanced nitrogen and phosphorus nutrition, making it suitable for modern farming, mechanical spreading, and large-scale agricultural production.
AOLANSU Agricultural DAP Fertilizer provides stable nutrient performance with total nutrients (N+P₂O₅) ≥64%. More than 90% of phosphorus is water-soluble, allowing crops to obtain available nutrients quickly during important growth stages.
The balanced nitrogen and phosphorus ratio supports root development, improves early crop establishment, and helps maintain continuous nutrient supply after application.
The fertilizer granules are controlled within 2-4mm with good hardness and excellent storage stability. The uniform particle size enables even fertilizer distribution during manual or mechanical application.
With moisture content ≤2.0%, the product effectively reduces caking problems during storage and transportation, making it suitable for long-distance export and warehouse storage.
Agricultural DAP Fertilizer is suitable for various agricultural applications, including:
It can be applied through broadcasting, furrow application, and spot fertilization according to different soil conditions and farming requirements.
AOLANSU controls heavy metal impurities and production emissions through strict manufacturing management. The product quality meets international agricultural requirements for safe and sustainable fertilizer use.
The weakly alkaline characteristics of DAP fertilizer help reduce phosphorus fixation in acidic soils and improve fertilizer utilization efficiency.
High-purity phosphoric acid and liquid ammonia are carefully inspected before entering the production process to ensure stable raw material quality.
Controlled ammoniation and granulation processes are used to produce uniform Diammonium Phosphate Fertilizer granules with stable nutrient composition.
After drying and screening, each batch is tested for nutrient content, particle size, moisture level, and appearance before packaging.
In 2024, AOLANSU Agricultural DAP Fertilizer was applied in a maize cultivation project covering approximately 2,000 mu (about 133 hectares) of farmland in Northern Nigeria.
The farmland featured sandy soil conditions and a dry climate environment. DAP fertilizer was applied as a base fertilizer at 25 kg per mu before planting. Field observations showed improved early root development, stronger plant growth, and better drought resistance compared with untreated farmland.
This application experience demonstrates the suitability of granular DAP fertilizer for large-scale agricultural production in Africa and other regions with demanding farming conditions.
AOLANSU provides COA documents, export support, and stable supply capability for global fertilizer buyers. Our products are supplied to agricultural markets in Southeast Asia, Africa, South America, and Europe.
| Parameter | Specification |
| Product Name | Agricultural DAP Fertilizer (Diammonium Phosphate Fertilizer) |
| CAS No. | 7783-28-0 |
| Molecular Formula | (NH₄)₂HPO₄ |
| Appearance | White uniform granular fertilizer, 2-4mm, no visible foreign impurities |
| 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 (Weakly Alkaline) |
| Packing | 50kg PP woven bags with PE inner lining, bulk packaging available |
| Storage Condition | Store in a dry, ventilated, and cool place away from moisture and alkaline materials |
Agricultural DAP Fertilizer is mainly used to provide nitrogen and phosphorus nutrients for crops. It supports root development, early plant growth, flowering, and crop yield improvement. It is widely applied to maize, wheat, rice, vegetables, fruit trees, and commercial crops.
DAP (Diammonium Phosphate) and MAP (Monoammonium Phosphate) are both phosphate fertilizers. DAP normally contains around 18% nitrogen and 46% phosphorus pentoxide, while MAP usually contains approximately 11% nitrogen and 52% phosphorus pentoxide.
DAP fertilizer has a higher nitrogen content and weakly alkaline characteristics, making it suitable for many agricultural soils and large-scale fertilizer applications.
Agricultural DAP Fertilizer can be used together with compatible fertilizers such as urea and other nitrogen fertilizers. However, mixing with strongly alkaline materials such as lime or plant ash should be avoided because it may reduce phosphorus availability.
AOLANSU provides professional application guidance according to different crops and soil conditions.
DAP fertilizer should be stored in a dry, ventilated environment away from moisture. The PP woven bags with PE inner lining help protect the fertilizer during transportation and warehouse storage.
Yes. AOLANSU provides Certificate of Analysis (COA), product specifications, and required export documents for international customers. Each production batch is inspected before shipment to ensure consistent quality.
AOLANSU supports flexible cooperation models according to customer requirements. Trial orders, regular purchasing plans, and large-volume fertilizer supply projects can be discussed based on destination markets and application needs.
Shandong AOLANSU Environmental Technology Co., Ltd. operates its own fertilizer production facility in China and provides factory-direct Agricultural DAP Fertilizer supply.
As a professional Agricultural DAP Fertilizer supplier in China, AOLANSU provides direct factory supply with stable quality and competitive pricing. By cooperating directly with the manufacturer, customers can reduce intermediate purchasing costs and improve supply reliability.
Before shipment, every batch of DAP fertilizer undergoes quality inspection covering nutrient content, moisture level, particle size, and product appearance. Customers can receive COA documents for quality confirmation.
AOLANSU has experience serving overseas agricultural markets and provides export support including packaging solutions, documentation preparation, and logistics coordination.
Whether you are a fertilizer distributor, agricultural importer, or large farming organization, AOLANSU can provide customized supply solutions based on order volume, packaging requirements, and destination market needs.
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(North of Dongwei Group, West) Houwei Village, Changshan Town, Zouping City, Binzhou, Shandong Province, China
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