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Urea–Carbamide (46% N) fertilizer
Specification
Index name | Urea | |
Date | Test Method | |
Apprance | Granular or crystalline, free of mechanical impurities | |
N% | 46 Min | GB/T2441.1-2008 |
Biuret | 0.9 MAX | GB/T2441.2-2010 |
Moisture | 0.5% Max | GB/T2441.3-2010 |
D(1.18-3.35mm)% | 93Min | GB/T2441.7-2010 |
identification | Meet with GB 1832-2001 | GB 18382–2001 |
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Core Functions
• Nitrogen Supply: Nitrogen is a key component of proteins, chlorophyll, and enzymes. It promotes leaf expansion, enhances photosynthetic capacity, and accelerates vegetative growth (stems, leaves, branches).
• Yield & Quality Enhancement: Adequate nitrogen supply increases crop biomass, improves fruit setting rate, and boosts yield. It also enhances quality traits like grain plumpness, leaf tenderness, and nutritional value.
• Wide Adaptability: Works with most soil types (sandy, loamy, clay) and crop species, acting as a flexible nutrient supplement for various growth stages.
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Suitable Crops
• Cereals: Rice, wheat, corn, barley.
• Fruits and vegetables: Tomatoes, cucumbers, apples, citrus, strawberries, leafy greens.
• Cash crops: Cotton, soybeans, rapeseed, tobacco, sugarcane.
• Turf and ornamental plants.
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Application & Dosage
1) Soil Application:
• Basal application: Apply 15-25 kg per mu (225-375 kg per hectare) before sowing/transplanting, mixed into the soil to reduce nitrogen loss.
• Topdressing: Apply 10-15 kg per mu (150-225 kg per hectare) during key growth stages (e.g., tillering for cereals, flowering for fruits/vegetables), incorporated into soil followed by irrigation.
2) Drip Irrigation/Flush Application:Â Dissolve in water (avoid high concentrations) and apply via irrigation systems. Use 5-10 kg per mu (75-150 kg per hectare) per application for uniform nutrient delivery.
3) Foliar Spray:Â Dilute to 0.5%-2.0% concentration (adjust based on crop type). Spray during early morning/late evening, focusing on leaves. Suitable for emergency nutrient supplementation or late growth stages.
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Key Precautions
1．Avoid direct contact with seeds/seedlings, as high nitrogen concentration may cause “burning” (seedling death or root damage).
2. Urea hydrolyzes to ammonia in soil—apply when soil moisture is adequate, and avoid application before heavy rain to prevent nitrogen leaching.
3. Do not mix with alkaline fertilizers (e.g., calcium carbonate, ammonium bicarbonate), as this accelerates ammonia volatilization and reduces efficiency.
4. Split applications (multiple small doses) are recommended for long-growing crops to maintain stable nitrogen supply and minimize waste.
Packing & Delivery
• Inner plastic and outer woven bags with net weight of 25kg, 50kg and 1000kg.
• It is Certified under IMO IMDG CODE, ensuring compliance with international maritime safety standards and enabling secure global shipping.