Garlic likes to be cold and cold tolerant. Require higher sunshine and high temperature to promote the differentiation of flower buds and buds. In addition, garlic grows best in sandy loam, and garlic grown in sandy soil is spicy, but has a loose texture and is not durable for storage. The garlic has shallow roots, many root hairs, and weak roots' ability to absorb water and fertilizer, so it is not drought-tolerant. In different growth periods, garlic has different requirements for soil moisture. The germination stage requires higher soil moisture to promote rooting and germination; the seedling stage should not have too much water to prevent the seedlings from growing long and promote the vertical growth of the root system; after the mother is retreated, the bud and flower bud differentiation stages require higher soil humidity; The soil moisture should be reduced to avoid the rotting and blackening of the bulb outer skin.