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The absorption of all kinds of nutrients by garlic was the highest in nitrogen, followed by potassium, calcium, phosphorus and magnesium. In addition, sulfur is a constituent element of garlic quality. The appropriate application of sulfur fertilizer can increase the weight gain of garlic bulbs and garlic bulbs, and can reduce the malformed garlic bulbs and fissure balls.
Second, high-yield garlic fertilizer technology Basal fertilizer: Because the garlic root is shallow, the root hair is less, and the ability of sucking fertilizer is poor. Therefore, the quality requirement of the base fertilizer is higher. It is generally better to use cooked manure or cake fat. In the base fertilizer, some potassium and phosphorus compound fertilizers are usually applied. High-yield garlic generally Mushi high-quality organic fertilizer 5000-6000 kg, 80-100 kg cake fertilizer, in order to improve soil fertility and ensure nutrient supply. Mu NPK fertilizer 25-35 kg.
2. Seedling-building fertilizer: The purpose is to promote the rapid emergence of long-rooted seedlings after emergence and improve the overwintering performance of autumn sowing garlic. The stimulating seedling fertilizer is usually carried out about 15 days after emergence. If the fertility is higher and the base fertilizer is more than enough, Miao Miao may not be used. Otherwise, 10 kg of standard N fertilizer can be applied per acre.
3. Return to green manure: Generally, the temperature rises in spring, and when the heart and root of garlic are started to grow, it is appropriate to use 10-15 kilograms of standard nitrogen fertilizer.
4. Fermentation: Generally, it should be done when the scale buds and flower buds have been completely differentiated and garlic moss is present. At this time as the growth enters a vigorous period, the amount of growth and the amount of fertilizer required have reached a peak period. Therefore, the stimulating use of moss fertilizer is a key top dressing and should generally be re-applied. About 40-50% of the top dressing. Apply 25-30 kg of NPK compound fertilizer per mu.
5. Promoting head fat: It is generally conducted 25-30 days after the application of the furrowing fertilizer. The top dressing is to meet the needs of nutrients when the garlic is harvested and the garlic is inflated. The topdressing fertilizer was mainly nitrogen fertilizer, with a small amount of phosphorus and potassium fertilizer applied. The amount of 20-30% of the total fertilizer is appropriate.
First, the need for garlic fertilizer characteristics Garlic root system for the stringy fleshy root, mainly distributed in the 20-25 cm plow layer, is a shallow root vegetables. It is sensitive to fertilizer and water, and has the distinctive features of fertilizer and fertilizer resistance. Garlic has few root hairs and is weak, and the roots have poor sucking capacity. The nutrients needed for garlic sprouts are provided by the species flaps. With the growth of seedlings, the nutrients stored in the species flaps are gradually depleted, commonly known as the “backwardsâ€. At this time, quick-acting fertilizers should be applied to ensure the growth of seedlings and the cultivation of strong seedlings. The growth of the retired mother depends entirely on the supply of nutrients to the soil. The scale bud and flower bud differentiation period of garlic is a crucial period for the growth and development of garlic. The growth of root system is enhanced, which accelerates the absorption and utilization of soil nutrients. From the flower bud differentiation and the end to the harvest of garlic, it is the period between the vegetative growth and the reproductive growth of garlic. It has a large amount of growth and requires the most fertilizer and water. It is a critical period for garlic fertilizer and water management.