Garlic is a fertilizer-resistant crop. On the basis of applying base fertilizer, it is still necessary to apply fertilizer in spring. The total amount of topdressing in high-yield fields is controlled at 25 kg of pure nitrogen and 10 kg of potassium. Fertilization should master the vigorous growth period (mid-April in mid-April) as the maximum efficiency of nitrogen fertilizer, and the expansion period of garlic (Yuyu-Lixia) is the maximum efficiency period of potash fertilizer, and nitrogen is the main nutrient needed in the leaf formation period. The larger the rate of early output reduction. During the expansion period of garlic, the deficiency of potassium appeared to be small in the early period, and it appeared to have a large influence in the later period. The growth period of garlic sprouts is the maximum period of nutrient absorption of nitrogen, phosphorus and potassium.
Garlic is sulfur-like crops. Allicin is mainly a dithio compound. Most of the garlic protein contains sulfur, sulfur has an important role in improving the quality of garlic. At the same time, studies have shown that the nitrogen and sulfur absorbed by plants can be most effectively utilized only when the fertilizer n/s is close to the optimum value. The n/s of garlic is generally 12/1. The utilization rate of sulfur in northern calcareous soil is 2~3%, and it is easy to be fixed as calcium sulfate, and the nitrogen utilization rate is 30~35%. The best n/s ratio is 4/5. Sulfur is not reusable in garlic. In the middle growth period, sulfur must be added to maximize the fertilizer effect. According to the requirement of nitrogen and sulfur for garlic, 40% nitrogen and sulfur fertilizers (n≥17.5%, s≥22.5%) are used. The long-term fertilizer efficiency
Complementary effects, containing fulvic acid to promote the growth of garlic roots, improve disease resistance and fertilizer utilization has an important role, can play a role in promoting, raising roots, to prevent premature aging, increase production.
Supplementary application of green manure: Garlic can be seen after the rain, snow and ice weather, 40% nitrogen and sulfur fertilizer applicator 15 to 20 kg.
Reseeding Miao Fei: In early April, Mushi 40% nitrogen-sulfur fertilizer 20 to 30 kilograms to meet the growing demand for nitrogen and sulfur garlic vigorous growth.
Applying a bulkhead fertilizer: When the garlic sprouts are exposed, 15-20 kg of high-nitrogen and high-potassium fertilizers are applied with water to accelerate the expansion of garlic.
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