1. Yield level above 200 kg/mu: nitrogen fertilizer (N) 11-13 kg/mu, phosphate fertilizer (P2O5) 4-6 kg/mu, potassium fertilizer (K2O) 7-9 kg/mu, borax 1.0 kg/mu. 2. Yield level 100-200 kg/mu: nitrogenous fertilizer (N) 8 to 10 kg/mu, phosphate fertilizer (P2O5) 3 to 5 kg/mu, potassium fertilizer (K2O) 5 to 7 kg/mu, borax 0.75 kg/mu. 3. Yield level below 100 kg/mu: Nitrogen fertilizer (N) 5-7 kg/mu, Phosphorus fertilizer (P2O5) 3-4 kg/mu, Potassium fertilizer (K2O) 0-4 kg/mu, Borax 0.5 kg/mu.
Sulphur may be used in sulphur-free areas at 2 to 3 kg/mu. If other sulphur-containing fertilizers are used, the amount of sulphur may be reduced. If the organic fertilizer is used as the basal fertilizer, the amount of chemical fertilizers may be reduced as appropriate; the crops of the previous season can be reduced when the straw is returned to the field. 1/3 potash dosage. 50% of the total amount of nitrogen fertilizer is used as base fertilizer, 20%~30% as wintering seedling fertilizer, 20%~30% as manure fertilizer, and manure fertilizer in the three-maize system area should be forwarded; potassium fertilizer 60% is used as base fertilizer, 40% For manure; phosphate fertilizer, boron fertilizer and sulfur as base fertilizer.
Sulphur may be used in sulphur-free areas at 2 to 3 kg/mu. If other sulphur-containing fertilizers are used, the amount of sulphur may be reduced. If the organic fertilizer is used as the basal fertilizer, the amount of chemical fertilizers may be reduced as appropriate; the crops of the previous season can be reduced when the straw is returned to the field. 1/3 potash dosage. 50% of the total amount of nitrogen fertilizer is used as base fertilizer, 20%~30% as wintering seedling fertilizer, 20%~30% as manure fertilizer, and manure fertilizer in the three-maize system area should be forwarded; potassium fertilizer 60% is used as base fertilizer, 40% For manure; phosphate fertilizer, boron fertilizer and sulfur as base fertilizer.
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