In seedling stage, decomposed human manure1000 ~ 2,500 kg, or ammonium sulfate 15~20 kg, or urea 7~9 kg are generally applied per mu, followed by water topdressing. If garlic seedlings grow vigorously, no topdressing can be used to prevent the seedlings from being too prosperous before winter. Applying 5000~7000 kg of overwintering fertilizer per mu can make plants bolting early, garlic cloves big and garlic heads heavy in the second year. After the temperature rises in spring, spring fertilizer can be applied in time, and human manure or chemical fertilizer can be applied. When bolting, 20~25 kg of ammonium sulfate or 9~ 12 kg of urea should be applied topdressing per mu. After bolting fertilizer is applied 1 month, the scale buds of garlic enter the vigorous development stage, which requires a large amount of nutrients. At this time, quick-acting fertilizer should be applied once, and 3000~4500 kg of pig manure urine, or ammonium sulfate 18~20 kg, or urea 8~ 10 kg can be applied per mu.