Chemical Properties:
- Composition: Compound water-soluble NPK fertilizer is a comprehensive fertilizer, typically containing three main nutrients: nitrogen (N), phosphorus (P), and potassium (K). The nitrogen content (as N) is generally between 10% and 15%, phosphorus content (as P₂O₅) is between 5% and 10%, and potassium content (as K₂O) is between 10% and 15%.
- Form: Usually in powder or granular form, easily soluble in water, facilitating absorption and utilization by crop roots.
- Function: Provides comprehensive nutrients required by crops, promotes healthy growth, and increases yield and quality.
Application Techniques:
- Timing of Application: Select appropriate timing for fertilization based on the growth stages of crops and the nutrient status of the soil. Typically applied at key stages such as before sowing, during growth, and at the fruiting stage.
- Application Method: Dissolve the compound water-soluble NPK fertilizer in water and apply it through spraying, drip irrigation, or irrigation according to recommended ratios and quantities. Application methods may include foliar spraying and fertigation.
- Control of Application Rate: Adjust the fertilizer application rate based on factors such as crop type, growth stage, and soil fertility to avoid over-fertilization, which may cause waste or environmental pollution.
Safety Precautions:
- Protective Measures: Wear appropriate protective equipment such as masks, gloves, and goggles during application to prevent irritation to the skin and respiratory tract from fertilizer dust.
- Storage Precautions: Store compound water-soluble NPK fertilizer away from heat sources and flammable materials in a ventilated and dry place to prevent moisture and high temperatures.
- Avoid Mixing: Do not mix with other chemicals to prevent chemical reactions or reduced fertilizer efficiency.
- Keep Away from Children: Store in a place inaccessible to children to prevent accidental ingestion or contact.
In conclusion, compound water-soluble NPK fertilizer is an important agricultural chemical. When used correctly and safely, it can effectively promote crop growth, increase yield, and improve quality. During application, adjust the fertilization plan according to actual conditions to fully utilize its nutritional benefits.
