What fertilizer is best for improving soil?

  Rich in organic matter, farmyard manure is abundant in organic content despite its lower nitrogen, phosphorus, and potassium levels. While these nutrients can be supplemented through chemical fertilizers, farmyard manure uniquely enhances soil organic matter and improves soil looseness and fertility—benefits unattainable with other chemical fertilizers.
  Microbial inoculants: When applied to soil, microbial inoculants decompose organic matter, producing humic acids that improve soil structure, enhance aeration, and increase water and nutrient retention capacity.
  No-till soil conditioners: For optimal soil loosening, these conditioners require moisture. On fields with poor tillage conditions, apply no-till soil conditioners with water irrigation.
  Green manure incorporation: For nutrient-poor soils, cultivate green plants. Before flowering, use a straw return machine or rotary tiller to shred and incorporate the plants into the soil. All tender stems and leaves of green plants can be incorporated as green manure. Examples include alfalfa, mung beans, ryegrass, fava beans, and rapeseed.
  Select chemical fertilizers based on soil pH. Superphosphate, a chemical fertilizer containing sulfate ions, exhibits acidic pH. Applying it to alkaline soils significantly improves physical and chemical properties. When combined with organic fertilizers, it substantially boosts soil nutrients and enhances aeration. Diammonium phosphate is alkaline and suitable for neutral to slightly acidic soils. That's all for today's sharing. Stay tuned for more next time.