This standard specifies the technical requirements, test methods, inspection rules, labeling, packaging, transportation and storage of compound fertilizers. This standard applies to compound fertilizers (including various special fertilizers and ternary or binary solid fertilizers with various names based on nitrogen, phosphorus, and potassium); compound fertilizers that have national or industry standards such as phosphoric acid Monoammonium, diammonium phosphate, nitrophosphate fertilizer, potassium dihydrogen phosphate, calcium magnesium phosphorus potassium fertilizer, etc. should implement the corresponding product standards.