Garlic likes cool weather. The most suitable sowing time is from early September to early October. If it is too early, it will be susceptible to freezing. If it is too late, it will withstand high temperatures in the later period and will shrink during the growth period. The quality will be poor and the yield will increase. Don't go.

After sowing, garlic goes through three seasons: autumn, winter and spring, and is harvested in summer.

If you want to harvest high-quality and high-yielding garlic, you cannot do without the assistance of fertilizer. Although there is a supply of nutrients from base fertilizer and seed cloves, top dressing during the growth period of garlic is equally important.

So how should garlic be topdressed?

Garlic is a shallow-rooted crop, with a soil depth of about 20-25 cm. It has few root hairs and is not very capable of absorbing fertilizer nutrients. However, it likes and tolerates fertilizer. On the one hand, it likes it, but on the other hand, it likes it. It is not easy to absorb, and there is a large demand for fertilizer when entering several important growth nodes, so sufficient and timely fertilizer supply must be ensured.

During different growth periods, garlic has different needs for fertilizers. During the growth period of the plant, it prefers nitrogen fertilizer. When the garlic head expands, it focuses on potassium fertilizer. During the growth period of the garlic sprouts, it prefers nitrogen, phosphorus, and potassium fertilizers. Have balanced needs.

If calculated from the overall absorption of the three elements, nitrogen is the most abundant, followed by potassium and phosphorus. The ratio is roughly: nitrogen, phosphorus and potassium = 4:1:2

One , Top dressing of garlic in each important growth period? 1. Seedling stage - fertilization for seedlings

Due to the small body and weak body of garlic in the seedling stage, top dressing should not be too strong. The main purpose is to lay a good foundation and cultivate strong seedlings, so Top dressing during this period is also called "seedling fertilizer" or "seedling fertilizer".

① Topdressing needs to be carried out according to the growth of the seedlings. If the growth is good, there is no need for topdressing due to the base fertilizer and garlic nutrients to prevent vigorous growth before winter.

② If the seedlings grow weakly and need to be topdressed, thin human excrement can be applied. If chemical fertilizers are used, 10-15kg of ammonium sulfate or 5-8kg of urea can be applied per mu, followed by water. Apply to promote seedling development. 2. Overwintering period - overwintering fertilizer

As time goes by, the weather gradually gets cooler, the underground stems of garlic also begin to differentiate, and the growth and development slow down. It is time to start the overwintering management of seedlings.

Seedlings generally need to grow 4-6 true leaves before winter to survive the winter as strong seedlings. At this time, they need to be fertilized again, which is called "overwintering fertilizer" or "wax fertilizer". Providing nutrients in winter also has a warming effect to help seedlings survive the winter safely. It can also promote the accelerated development of underground stems and produce more branches, which also has a positive effect on early greening in the coming year.

Apply 1,500-2,500 kilograms of fully decomposed organic fertilizer per mu, combined with 10-20 kilograms of compound fertilizer for furrow application.