Fertilizer requirement characteristics of garlic

The root system of garlic is string fleshy fibrous root, which is mainly distributed in 20-25 cm plough layer and belongs to shallow root vegetable. It is sensitive to fertilizer and water, and has the distinct characteristics of like fertilizer and resistant to fertilizer. The root hairs of garlic are very few and thin, and the root has poor fertilizer absorption ability. The nutrients needed for garlic sprouting are provided by the seed petal, and with the growth of the seedlings, the nutrients stored in the seed petal are gradually exhausted, commonly known as "mother". At this time, quick-acting fertilizer should be applied to ensure the growth of seedlings and cultivate strong seedlings. The growth after quitting mother depends entirely on the supply of soil nutrients. The differentiation period of scale bud and flower bud of garlic is the key period for the growth and development of garlic, and the root growth is enhanced, which accelerates the absorption and utilization of soil nutrients. The period from flower bud differentiation and ending to garlic moss harvesting is the period of both vegetative growth and reproductive growth of garlic, with large growth and the largest demand for fertilizer and water, which is the key period for fertilizer and water management of garlic.

The absorption of various nutrient elements by garlic was the most in nitrogen, followed by potassium, calcium, phosphorus and magnesium. In addition, sulfur is the quality constituent element of garlic. Proper application of sulfur fertilizer can increase the weight of garlic and garlic moss, and reduce the abnormal garlic moss and crack ball.