Balanced NPK compound fertilizers formulations such as 15-15-15, 17-17-17, and 20-20-20 are designed to meet balanced nutritional demands throughout the crop lifecycle, synergistically promoting both vegetative and reproductive growth. Through the golden 1:1:1 NPK ratio, they achieve:

1. Vegetative-reproductive growth balance
2. Coordinated yield-quality enhancement
3. Simplified fertilization protocols
When combined with secondary/trace element technologies, overall efficacy increases by >30%, making these fertilizers core enablers for intensive and sustainable agriculture.

Restricted Scenarios:

1.Severely nutrient-deficient soils (requires customized formulas, e.g., boron supplementation in B-deficient zones)

2.Saline-alkali soils (*use potassium nitrate-based formulas with EC <1.2 mS/cm*)

3.Combine with humic acid (4.5g/m²) to activate nutrients and reduce fixation.

3.Select potassium nitrate-based + chelated micronutrient formulas (e.g., *18-18-18 + 2MgO + B*).

Prohibited Mixtures:

Alkaline fertilizers (e.g., wood ash/lime) → Increases ammonia volatilization by 30%

Calcium-containing fertilizers (e.g., calcium nitrate) → Forms insoluble Ca₃(PO₄)₂ precipitates

Safety Interval:

Allow ≥7 days between organic fertilizer co-application.

With continuous annual application, test soil P/K reserves biennially:

→Reduce phosphorus if *Olsen-P >60 mg/kg*
→Reduce potassium if *available K >200 mg/kg*
→Prevents resource waste and water eutrophication!

For additional product information, please contact us via email info@aicheme.com