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Humic Acid (HA)
Specification
Appearance | Powder | Granular | Powder | Granular |
Humic Acid (dry basis) | ≥60% | ≥60% | ≥50% | ≥50% |
Organic Matter | ≥85.0% | ≥85.0% | ≥80.0% | ≥80.0% |
PH | 4-6 | 4-6 | 4-6 | 4-6 |
C.E.C | ≥200meq/100g | ≥200meq/100g | ≥200meq/100g | ≥200meq/100g |
Particle size | / | 2-4mm | / | 2-4mm |
Fineness | 60Mesh | / | 60Mesh | / |
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Core Components & Key Functions
• Main components: Includes humic acid, fulvic acid, and humin—all with high cation exchange capacity (CEC) and chelating properties.
• Soil health promotion: Improves soil structure by binding soil particles, enhancing aeration and water retention (critical for both dry and waterlogged soils).
• Nutrient activation: Chelates macroelements (N, P, K) and microelements (Zn, Fe, Mn), making them more available to crops and reducing leaching loss.
• Crop growth stimulation: Stimulates root elongation and branching, enhances photosynthesis, and regulates plant hormone balance for vigorous growth.
• Stress resistance enhancement: Boosts tolerance to drought (improves water uptake), salinity (reduces ion toxicity), and diseases (activates plant defense mechanisms).
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Key Agricultural Advantages
• Universal soil adaptability: Works for acidic, neutral, and alkaline soils—balances pH, reduces soil compaction, and remediates degraded or saline-alkali soils.
• Fertilizer efficiency improvement: Reduces chemical fertilizer usage by 10%-20% while maintaining or increasing yields, cutting farming costs.
• Eco-friendly: Promotes beneficial soil microorganisms (e.g., nitrogen-fixing bacteria), reduces soil pollution, and supports sustainable agriculture.
• Crop quality upgrade: Enhances fruit sugar content, coloring, and shelf life; increases protein and nutrient levels in grains and vegetables.
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Suitable Crops & Application Scenarios
• All crops: Cereals (wheat, corn, rice), cash crops (fruits, vegetables, cotton), oilseeds (soybean, rape), and horticultural plants.
• High-priority scenarios: Degraded soils (low fertility, compaction), saline-alkali lands, drought-prone areas, and intensive farming systems (to mitigate soil fatigue).
• Critical growth stages: Seedling establishment (root development), flowering/fruit setting, and stress periods (drought, cold, salinity).
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Application Recommendations
• Base application: Apply 10-20 kg per mu (powder/granule form), mixed with organic fertilizer or chemical fertilizers. Plow into 10-15 cm soil before sowing/transplanting.
• Topdressing: Apply 5-10 kg per mu during key stages (e.g., wheat tillering, tomato fruit expansion), broadcast or furrow-applied.
• Foliar spraying: Dilute to 0.05%-0.1% concentration (liquid humic acid). Spray 2-3 times with 7-10 days interval, focusing on leaves and young shoots.
• Drip irrigation/fertigation: Dilute liquid humic acid to 0.1%-0.2% solution, apply 3-5 kg per mu per application, split into 3-4 times for uniform absorption.
• Seed soaking: Dilute to 0.02%-0.05% solution, soak seeds for 6-12 hours to improve germination rate and seedling robustness.
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Notes for Use
• Avoid mixing with strong acidic fertilizers/pesticides to prevent flocculation and reduced effectiveness.
• For saline-alkali soils, increase application frequency (4-5 times per season) to enhance remediation effects.
• Use with chemical fertilizers or organic manure for synergistic effects—do not replace essential nutrients (N, P, K) entirely.
Store in a cool, dry, well-ventilated place; seal tightly to prevent moisture absorption and caking.