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DAP18-46-0

DAP18-46-0

DAP 18-46-0 (Diammonium Phosphate) is a high-concentration water-soluble nitrogen-phosphorus compound fertilizer, with fixed nutrient ratio of 18% total nitrogen (N), 46% available phosphorus (P₂O₅) and 0% potassium (K₂O). It appears as grayish-white or light yellow spherical granules, featuring high nutrient content, rapid dissolution and easy crop absorption. Suitable for all soil types and various crops in seedling and flowering stages, it supplies dual N-P nutrition, promotes root development and flower bud differentiation, and is a core base fertilizer for global agricultural production with stable quality and wide applicability.
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Product Details

Basic Product Specifications

IndexIndustrial/Agricultural Standard
Nutrient ContentTotal N ≥18%, Available P₂O₅ ≥46%, K₂O=0
Chemical Formula(NH₄)₂HPO₄
AppearanceGrayish-white/light yellow spherical granules, uniform particle size, no obvious caking
Particle Size2-4mm (agricultural standard, customizable 1-3mm/3-5mm)
Water SolubilityHighly soluble in water (fully dissolved at 20℃, no precipitation)
pH Value7.8-8.2 (1% aqueous solution, weakly alkaline)
Moisture Content≤0.2% (low moisture, anti-caking)
Compaction Resistance≥12N (good mechanical strength, no easy breakage)



Core Functions & Nutritional Value

  1. High-Efficiency N-P Dual Supply: 18% ammonium nitrogen is easily absorbed by crop roots, meeting the nitrogen demand for vegetative growth; 46% high-content available phosphorus is the core nutrient for root development, flower bud differentiation and fruit setting, solving the key P deficiency problem of crops.
  2. Promote Root System Establishment: Stimulates the growth of crop primary and lateral roots, enhances root activity and water-nutrient absorption capacity, especially suitable for seedling stage, improving crop emergence rate and seedling uniformity.
  3. Boost Reproductive Growth: Promotes flower bud differentiation and healthy flowering, increases fruit setting rate, and lays a solid foundation for high yield in grain, fruit and vegetable crops; accelerates tillering of cereal crops such as wheat and rice.
  4. Soil Adaptability & Nutrient Activation: Weakly alkaline property can alleviate soil acidification, activate insoluble phosphorus in soil, and improve phosphorus utilization rate; suitable for acidic, neutral and slightly alkaline soils (the best phosphorus fertilizer for acidic soils).


Main Applications

Suitable Crops

All agricultural crops, especially phosphorus-demanding crops in seedling/flowering stage:
  • Field Crops: Wheat, rice, corn, cotton, rapeseed (promote tillering and seedling hardening)
  • Fruits & Vegetables: Apple, citrus, grape, tomato, cucumber, strawberry (promote root development and flower setting)
  • Economic Crops: Tea, tobacco, sugarcane, beet, flowers (improve seedling quality and commodity value)
  • Cash Crops: Soybean, peanut, potato (enhance root tuber formation and nutrient accumulation)


Application Methods & Dosage (per mu)

  1. Base Fertilizer (Main Application): 20-30kg, mixed evenly with soil before sowing/transplanting, or applied by ditching and covering with soil; the optimal application method for dry land and paddy field, providing basic N-P nutrition for the whole growth cycle.
  2. Seedling Fertilizer/Top Dressing: 5-10kg, applied at crop seedling stage and early flowering stage; for fruit trees, apply in annular ditch at the crown projection, suitable for mechanical spreading and manual application.
  3. Seed Dressing/Seedling Dipping Root: Dilute into appropriate concentration, mix with seeds or dip seedling roots before sowing/transplanting, improve seed germination rate and seedling survival rate (no direct contact with seeds in high concentration).
  4. Water-Fertilizer Integration: Dissolve completely in water, apply via drip irrigation/sprinkler irrigation, suitable for greenhouse and soilless culture, realizing efficient nutrient absorption with no waste.
  5. Mix Application: Can be mixed with potassium fertilizer, medium/trace element fertilizers (avoid mixing with acidic fertilizers such as ammonium sulfate, urea) to realize balanced N-P-K fertilization.

Industrial Classification & Attribute

DAP 18-46-0 is a typical agrochemical (high-concentration nitrogen-phosphorus compound fertilizer), belonging to fine inorganic chemical products in the chemical industry. It is produced by the industrial reaction of phosphoric acid and liquid ammonia, with mature large-scale production technology and strict quality control. As the most widely used high-concentration phosphorus fertilizer in the world, it is the core product of the phosphate fertilizer industry, and also used as a raw material for compound fertilizer production and a feed additive (food grade), with important agricultural and economic value.


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FAQ

Q1: What international standards do your products and services comply with?

A1: Our products fully comply with international standards such as REACH, MSDS, and COA, and we strictly implement the ISO9001 quality management system. We can also provide third-party testing reports (SGS, BV, etc.) according to customer needs.


Q2: How long does it take for goods to be delivered to my country?
A2: The delivery time depends on the transport mode and destination country. Generally, sea transport takes 15-30 days, air transport takes 3-7 days, and we will optimize the transport route to shorten the delivery time as much as possible.


Can you provide customs clearance services for dangerous chemicals?
A3: Yes. Our team is proficient in the customs clearance procedures for dangerous chemicals in various countries, and can provide professional compliant declaration and customs clearance services to ensure smooth customs clearance.


Q4: Do you provide customized product and service solutions?
A4: Yes. We can provide personalized product customization and export service solutions according to your specific needs (product specifications, application scenarios, procurement volume, etc.).

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