1. General Dosage Principles
Seedling Stage: Less fertilizer required, recommended application rate is 2-3 kg/mu (approximately 0.067 hectares).
Growth Stage: Increased fertilizer requirement, application rate is 5-8 kg/mu (approximately 0.067 hectares).
Flowering and Fruiting Stage: Maximum fertilizer requirement, application rate is 8-10 kg/mu (approximately 0.067 hectares).
2. Specific Dosage for Different Crops
Leafy Vegetables (e.g., spinach, lettuce): 3-5 kg/mu (approximately 0.067 hectares), every 7-10 days.
Fruits (e.g., tomatoes, cucumbers): 5-8 kg/mu (approximately 0.067 hectares), every 10-15 days.
Fruit Trees (e.g., apples, citrus): 10-15 kg/mu (approximately 0.067 hectares), every 15-20 days.
Field Crops (e.g., wheat, corn): 5-7 kg/mu (approximately 0.067 hectares), applied in conjunction with irrigation.
3. Concentration Control
Drip Irrigation: Recommended concentration is 0.1%-0.3% (i.e., 1 kg of fertilizer diluted in 300-1000 kg of water).
Foliar spray: concentration of 0.1%-0.2%, avoid burning leaves.
