For every 1,000 kilograms of garlic produced, it is necessary to absorb 5.1 kilograms of nitrogen, 1.3 kilograms of phosphorus, and 1.8 kilograms of potassium. The nutrient absorption ratio is 3.92:1:1.38. Garlic has a shallow root system, few root hairs, and a weak ability to absorb nutrients. The quality requirements for base fertilizer are relatively high. Before application, the organic fertilizer must be fully decomposed, mashed and mixed well to prevent undecomposed raw manure from causing garlic maggot damage. Commonly used farmyard fertilizers are human manure, pig manure, chicken , duck manure and cake fertilizer, etc. Generally, 2500 to 3000 kilograms of pig manure and urine are applied per mu. If chemical fertilizer is used as the base fertilizer, 30 to 35 kilograms of ammonium sulfate or 10 to 15 kilograms of urea are applied per mu. The fertilizer is applied into the ditch, and then Cover with soil. For acidic soil in the south, you can add an appropriate amount of lime to the base fertilizer.