Garlic likes to be cold and resistant to low temperatures. High sunshine and high temperature are required to promote the differentiation of flower buds and scale buds. In addition, garlic grows best in sandy loam. Garlic grown in sandy soil has a strong spicy taste, but its texture is loose and cannot be stored. Garlic has shallow roots, many root hairs, and weak water absorption and fertilizer capacity of the root system, so it is not drought-tolerant. In different growth periods, garlic has different requirements for soil moisture. The germination period requires high soil moisture to promote root germination; the seedling period should not have too much water to prevent the seedlings from lengthening and promote the vertical growth of the root system; higher soil moisture is required after the retiring period, the bulb and flower bud differentiation period; the bulb expansion period , The soil moisture should be reduced to avoid rot and blackening of the bulb skin.