Rice specificIt is mainly made from urea, ammonium phosphate, and potassium chloride, with an effective nutrient content of ≥ 25% for nitrogen, phosphorus, and potassium. It can be used as base fertilizer and topdressing, with a general usage of 60-75 kilograms per mu. Base fertilizer accounts for 6

According to fertilizer scienceA considerable portion of compound fertilizers sold in the market do not meet the national DB15063-94 standard. According to national standards, the effective nutrient content of compound fertilizer (compound fertilizer) should be ≥ 40% for high concentration nitrogen,