Onion planting should pay attention to the field management. Onion has high nutritional value, can disperse the role of wind and cold, stimulate the secretion of stomach, intestines and digestive glands, lower blood pressure and blood sugar, prevent thrombosis and so on. Therefore, it has been loved by everyone in recent years. Less farmers choose to grow onions, and China Chemical Fertilizer Network Xiaobian said that onion cultivation should pay attention to field management, especially water and fertilizer management.
Pay attention to the application of phosphorus and potassium fertilizer when planting onion, and avoid excessive nitrogen fertilizer, so as to avoid the occurrence of convulsions in the upper part of the ground and delaying the expansion of the bulb. In the period of leaf growth and bulb expansion, the onion needs fertilizer and the maximum water demand. During the period, fertilization and watering should be carried out in a timely manner. Each acre can be applied with 15 kg of diammonium phosphate, 20 kg of diammonium phosphate and 3-5 kg ​​of potassium sulfate.
For onion planting, it is necessary to do field management to prevent pests and diseases. For onions, it is mainly used to prevent the damage of mantle. It is forbidden to use manure as fertilizer. Because mantle is tending to manure, it is better to use fully decomposed organic fertilizer and apply it evenly. The seeds are separated from the fertilizer. Conditional organic fertilizer can be selected, which has a good effect in improving soil quality and onion quality.
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