Description

Agricultural DAP, also known as diammonium phosphate, is one of the most widely used compound fertilizers in global agricultural production. It is a white granular fertilizer with balanced nitrogen and phosphorus nutrients, which can directly provide two essential nutrients for crops—nitrogen and phosphorus, without additional mixing, saving time and labor for farmers. Different from single nitrogen fertilizer or phosphorus fertilizer, agricultural DAP has the advantages of high nutrient concentration, fast absorption and long-lasting fertilizer effect, which is an ideal fertilizer for improving soil fertility and promoting crop growth.

As a manufacturer rooted in China, Shandong Aolansu has been engaged in the production and supply of agricultural DAP for many years, deeply understanding the actual needs of overseas planting industry. Our factory is located in a major agricultural and chemical base in China, equipped with professional production lines and environmental protection equipment, adopting mature chemical synthesis technology, which not only ensures the stability of product quality, but also meets international environmental protection standards. We select high-purity phosphoric acid and liquid ammonia as raw materials, and go through strict raw material inspection, synthesis, granulation, drying, screening and packaging processes to ensure that each batch of agricultural DAP has uniform particle size, good fluidity and no obvious caking, which is convenient for transportation, storage and field application.

As a reliable China supplier, Shandong Aolansu focuses on the practical application effect of agricultural DAP, and does not use exaggerated publicity. The core indicators of our products are stable and up to standard, in line with the national standard GB 10205-2009: the total nutrient (N+P₂O₅) content is not less than 64%, among which the total nitrogen content is ≥18% and the available phosphorus (calculated as P₂O₅) is ≥46%, with a reasonable nitrogen-phosphorus ratio of about 1:2.5, which can meet the nutrient needs of crops in different growth periods. The water-soluble phosphorus percentage is ≥90%, which can be quickly dissolved in water and absorbed by crop roots, avoiding nutrient waste; the moisture content is ≤2.0%, which effectively prevents caking during storage and transportation, ensuring that the product can be used normally at any time. In addition, our agricultural DAP has extremely low heavy metal impurity content, which will not pollute the soil and groundwater, and is in line with the concept of green and sustainable agriculture.

In terms of product performance, our agricultural DAP has obvious advantages in practical application. It is weakly alkaline, suitable for neutral and acidic soils, and can slightly adjust the soil pH value, reducing the fixation of phosphorus by soil, thus improving the utilization rate of fertilizer. It has stable chemical properties, is not easy to decompose under normal storage conditions, and has a long shelf life—stored in a dry, ventilated and cool warehouse, it can be kept for 24 months without deterioration. The particle size is moderate (2-4mm), which is not easy to be washed away by rainwater after application, and can slowly release nutrients, providing long-term and stable nutrition for crops.

Quality control is the foundation of Shandong Aolansu’s factory development. We have a professional quality inspection team and advanced testing equipment, and implement full-process quality supervision from raw material entry to product delivery. Every batch of agricultural DAP will be sampled and tested, and key indicators such as total nutrient content, nitrogen content, phosphorus content, moisture and particle size will be inspected one by one. We provide a formal COA test report for each batch of goods, so that overseas buyers can clearly understand the product indicators and use them with confidence. At the same time, our factory has passed ISO9001 quality management system certification and ISO14001 environmental management system certification, ensuring that the production process is standardized and environmentally friendly.

In terms of application scope, our agricultural DAP has strong versatility and is suitable for almost all kinds of crops. For food crops such as rice, wheat and corn, it can promote tillering and root development, enhance the resistance of crops to drought and cold, and improve the fullness of grains and yield; for cash crops such as cotton, oilseeds and vegetables, it can promote branch and leaf growth, improve fruit setting rate and fruit quality; for fruit trees such as apples, pears and citrus, it can promote flower bud differentiation, make fruits bright in color and sweet in taste. It can be used as base fertilizer and topdressing, and can be applied by broadcasting, hole application, furrow application and other methods. It should be noted that it should not be directly contacted with seeds when used as seed fertilizer, and should not be mixed with alkaline fertilizers such as plant ash to avoid nutrient loss.

We understand the actual procurement needs of overseas agricultural buyers, so Shandong Aolansu provides flexible and humanized cooperation modes. We accept small-batch trial orders (starting from 1 ton), so that buyers can test the fertilizer effect in local soil and crops before bulk procurement, avoiding procurement risks. For long-term bulk buyers such as agricultural dealers and large-scale planting bases, we offer preferential factory-direct prices, eliminating intermediate links, helping buyers reduce comprehensive procurement costs. In terms of packaging, we adopt 50kg PP woven bags with PE inner lining as conventional packaging, which are moisture-proof, wear-resistant and easy to stack, suitable for long-distance transportation and field storage; we can also provide customized packaging and bulk shipment according to the specific needs of buyers, adapting to different transportation and storage conditions in various regions.

As a China-based manufacturer and supplier, Shandong Aolansu attaches great importance to supply efficiency and after-sales service. We keep sufficient inventory of agricultural DAP throughout the year, especially before the peak planting season, to ensure timely delivery and not delay the planting schedule of buyers. Our logistics team has rich experience in international agricultural fertilizer transportation, and can arrange safe and fast transportation to Southeast Asia, Africa, South America, Europe and other regions. We provide complete export documents, including MSDS, COA, customs declaration documents and certificate of origin, strictly complying with international transportation regulations and local agricultural standards of importing countries, ensuring smooth customs clearance.

In addition, we provide free samples of 500g-1kg for each batch of products, allowing buyers to fully test the fertilizer effect and product performance before placing formal orders. Our technical team has rich experience in agricultural fertilizer application, and can provide professional after-sales guidance, answering questions about fertilizer dosage, application time, application method and precautions, and helping buyers solve practical problems encountered in the planting process in a timely manner.

Shandong Aolansu has always adhered to the business philosophy of “quality first, customer-oriented”, and has won the trust of many overseas agricultural buyers with reliable products and thoughtful services. As a professional China factory and supplier, we look forward to establishing long-term and stable cooperative relations with global agricultural dealers, planting bases and related institutions, contributing to the development of global agriculture and achieving win-win cooperation.

Product Specifications

FAQ

Q1: What kind of soil is suitable for agricultural DAP?
A1: Our agricultural DAP is weakly alkaline, which is most suitable for neutral and acidic soils. It can slightly adjust the soil pH value, reduce the fixation of phosphorus by the soil, and improve the fertilizer utilization rate. It is not suitable for strong alkaline soils, which will easily lead to phosphorus fixation and reduce the fertilizer effect. Shandong Aolansu’s factory in China has tested the adaptability of the product in various soils, ensuring good application effect.

Q2: Can agricultural DAP be mixed with other fertilizers?
A2: It can be mixed with nitrogen fertilizers such as urea and ammonium nitrate, which can complement nutrients and improve the overall fertilizer effect. However, it should not be mixed with alkaline fertilizers such as plant ash and lime, because it will cause nutrient loss and affect the fertilizer effect. Shandong Aolansu will provide detailed mixing guidelines for free to help you use it correctly.

Q3: What are the advantages of purchasing agricultural DAP from your China supplier?
A3: Shandong Aolansu has its own factory in China, which can provide factory-direct prices, reducing your procurement costs. We have rich production experience and strict quality control, ensuring stable product quality and consistent fertilizer effect. We also provide sufficient stock, timely delivery and complete export documents, which can fully meet your bulk procurement needs.