Question: Recently a reader with a cell phone number of 13863****87 in Zaozhuang City, Shandong Province, came to inquire about how to use garlic for fertilizers.
Wang Guiren A: The answer is as follows:
I. Key points for garlic fertilization
Fertilization points for garlic cultivation In garlic roots, fertilizers affect the growth of garlic. The root of garlic is a chord-like fleshy root with no main root. The roots are scattered on the stem plate of the base of garlic, and there is no root hair, or very few root hairs. The roots are shallow, but there are more roots and they are born in 5-25 cm soil layers. Although garlic roots are weak, they are very sensitive to fertilizer and water. Although it is more tolerant to drought but more like moist, it needs a large amount of fertilizer but it can not be excessive.
Therefore, according to the characteristics of garlic root development, we must summarize the experience and lessons in field management, and do the following in the management of fertilizer and water:
A small amount of repeated fertilization, pay attention to light before and after weight. The garlic of high yield fields requires the application of pure nitrogen 12 to 18.5 kilograms, phosphorus pentoxide 10 to 11.5 kilograms, and potassium oxide 12 to 13.5 kilograms per mu. The base fertilizer should account for 60% to 70% of the total amount of fertilization, and 1500 to 2,000 kilograms of fermented human fecal urine should be applied per acre, or 2 to 3 cubic meters of organic farmhouse fertilizer should be applied, and 40 to 50 kilograms of cake fertilizer should be applied. Organic compound fertilizer 75 to 100 kg, with application of 50 kg of ammonium bicarbonate, or application of high content of ternary compound fertilizer 50 to 60 kg. Appearance of garlic 2 ~ 3 leaves, per acre should be recovered and composted human excreta 1000 kg, or urea 10 ~ 15 kg. Apply 10-15 kg of urea per acre before twitching. And can use Hui Man Fung active liquid fertilizer, 100 ml per mu, spray 50 kg of water. After twitching, according to the growth of garlic, then apply the valvium fertilizer as appropriate.
Second, strengthen the application of fertilizer
Garlic is a kind of fertilizer and fertilizer-tolerant vegetable crops. Due to poor root absorption capacity, it is necessary to pay attention to the spraying of trace elements under the premise of applying base fertilizer, and to spray microelement fertilizer in time to meet the demand of garlic growth for each nutrient.
1. Spraying Boron Fertilizer: When the garlic is deficient in boron, the new leaves will be yellowed. In severe cases, the leaves will die and plant growth will be stagnant. This symptom can be sprayed with boron fertilizer to enhance the application of boron fertilizer.
2. Spraying calcium fertilizer: when the garlic is deficient in calcium, the leaves show necrotic spots. With the expansion of the necrotic spots, the leaves are bent and the tip of the leaves soon die. When this symptom occurs, calcium nitrate or calcium chloride may be sprayed and calcium may be added.
3. Spraying magnesium fertilizer: When the garlic is deficient in magnesium, the leaves retreat green, first appear at the base of the old leaves, gradually develop to the tip, and the leaves eventually turn yellow and die. This symptom can be sprayed with magnesium sulfate to supply calcium.
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