Question: Recently, a reader with a mobile phone number of 13863****87 in Zaozhuang City, Shandong Province, inquired about how to use garlic, what micro-fertilizer is needed.
Wang Guiren A: The answer is as follows:
First, the key points of garlic planting and fertilizing
The main point of fertilization in garlic cultivation is in the roots of garlic, which affects the growth of garlic. The root of garlic is a string of fleshy roots with no main roots. The roots are scattered on the stems of the base of the garlic cloves, without root hairs or very few root hairs. Hair roots are shallow, but the root system is more, and it is born in a soil layer of 5 to 25 cm. Although the garlic root system is weak, it is very sensitive to fertilizer and water. Although it is more drought-tolerant, it prefers to be moist. Although it requires a large amount of fertilizer, it cannot be excessive.
Therefore, it is necessary to summarize the experience and lessons in field management according to the characteristics of garlic root development, and to achieve in the management of fertilizer and water:
Apply a small amount of fertilizer several times, pay attention to the light before and after. The garlic in the abundance field requires 12 to 18.5 kg of pure nitrogen, 10 to 11.5 kg of phosphorus pentoxide, and 12 to 13.5 kg of potassium oxide per acre. The base fertilizer should account for 60% to 70% of the total fertilization amount, 1,500 to 2,000 kilograms of manure and excrement should be applied per mu, or 2 to 3 cubic meters of decomposed organic farmyard manure, 40 to 50 kilograms of cake fertilizer, or biological application. Organic compound fertilizer 75 ~ 100 kg, with 50 kg of ammonium bicarbonate, or a high content of ternary compound fertilizer 50 ~ 60 kg. Garlic emergence in the 2 to 3 leaf stage, 1000 kg per person of manure should be chased, or 10 to 15 kg of urea. 10 to 15 kg of urea per acre before convulsion. It can also be used with Huimanfeng active liquid fertilizer, 100 ml per acre and 50 kg of water. After convulsion, according to the growth of garlic, apply the increased fertilizer as appropriate.
Second, strengthen the application of micro-fertilizer
Garlic is a kind of vegetable crop that likes fertilizer and fertilizer. Because of its poor absorption capacity, it should pay attention to spraying trace elements under the premise of applying base fertilizer, and timely spraying micro-fertilizer to meet the demand of various nutrients for garlic growth.
1. Spraying boron fertilizer: When the garlic is deficient in boron, the new leaves are yellowed, and in severe cases, the leaves die and the plant growth is stagnant. This symptom can be sprayed with boron fertilizer to enhance the spraying of boron fertilizer.
2. Spraying calcium fertilizer: When the garlic is deficient in calcium, the leaves appear necrotic spots. As the necrotic spots expand, the leaves bend down and the tip of the leaves quickly dies. This symptom can be added with calcium nitrate or calcium chloride, and calcium fertilizer is added.
3. Spraying magnesium fertilizer: When the garlic is deficient in magnesium, the leaves are green, first appear at the base of the old leaves, and gradually develop to the tip of the leaves, and the leaves eventually turn yellow and die. When this symptom occurs, it can be sprayed with magnesium sulfate to replenish calcium.
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