First, the fertilizer characteristics of garlic The roots of garlic are string-like fleshy fibrous roots, mainly distributed in 20-25 cm of plough layer, which is a shallow-rooted vegetable. It is sensitive to the reaction of fertilizer and water, and has the distinct characteristics of fertilization and fertilizer resistance. Garlic has few root hairs and is weak, and the roots have poor ability to absorb fertilizer. The nutrients required for the germination of garlic are provided by the seed lobes. As the seedlings grow, the nutrients stored in the lobes are gradually exhausted, commonly known as “returning mothers”. At this time, quick-acting fertilizer should be applied to ensure the growth and cultivation of seedlings. The growth after the withdrawal of the mother is entirely dependent on the soil nutrient supply. The bud and flower bud differentiation period of garlic is the key period for the growth and development of garlic. The root growth is enhanced, which accelerates the absorption and utilization of soil nutrients. The differentiation from flower buds to the end of garlic and garlic is the period of garlic vegetative growth and reproductive growth. The growth is large and the amount of fertilizer and water is the most. It is the key period for the management of garlic fertilizer and water.

Garlic absorbs all kinds of nutrients with the most nitrogen, followed by potassium, calcium, phosphorus and magnesium. In addition, sulfur is a quality component of garlic. Appropriate application of sulfur fertilizer can increase the weight gain of garlic and garlic, and can reduce the abnormal garlic moss and rifle.

Second, the fertilization technology of high-yield garlic

1. Base fertilizer: Because the roots of garlic are shallow, the root hair is small, and the ability to absorb fertilizer is poor, so the quality of the base fertilizer is high. It is generally better to use decomposed manure or cake fertilizer. In the base fertilizer, some phosphorus and potassium compound fertilizers are usually applied. High-yield garlic is generally applied with 5000-6000 kg of high-quality organic fertilizer and 80-100 kg of cake fertilizer to improve soil fertility and ensure nutrient supply. Acre of NPK compound fertilizer is 25-35 kg.

2. Promote seedling fertilizer: The purpose is to promote the rapid rooting of seedlings after emergence and improve the wintering performance of autumn-sown garlic. The seedling fertilizer is generally carried out about 15 days after emergence. If the fertility is high and the base fertilizer is sufficient, the seedling fertilizer may not be applied, otherwise 10 kg of standard nitrogen fertilizer may be applied per acre.

3. Back to green fertilizer: Generally, the temperature rises in Spring, and the heart and roots of garlic begin to grow. The dosage is 10-15 kg of standard nitrogen fertilizer.

4. Moss Fertilizer: Generally, it should be carried out when the scale buds and flower buds are differentiated and the garlic moss is licked. Since it enters the vigorous growth period at this time, the growth amount and the amount of fertilizer required have reached the peak period, so the moxibustion is a key topdressing, and should be re-applied. About 40-50% of the total amount of topdressing. 25-30 kg of NPK compound fertilizer per mu.

5. Primer: Generally, it is carried out 25-30 days after the application of the moss fertilizer. This time, the top dressing is to meet the needs of the nutrient when the garlic is harvested and the garlic is swollen. The top dressing is mainly based on nitrogen fertilizer, combined with a small amount of phosphorus and potassium fertilizer. The dosage is preferably 20-30% of the total topdressing amount.
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