Can onions be planted in the soil?

Can onions be planted in the soil?

Onions can be planted in the soil. If you want to grow onions, you can use bulb planting, which is the seed collection method used in most parts of China. After the onions are planted, they are sown in September-October of the first year, and the seedlings can be planted in the field or stored in winter to survive the winter.

Onions mainly prefer flat and relatively fertile land. Onions grown on such land are not only plump, but also taste very good and the yield will also increase. Secondly, avoid using highly alkaline or highly acidic soil to grow onions, as this will cause poor growth of onions.

Onion soil cultivation method

1. Land preparation

Choose sandy loam plots with fertile soil, deep soil layer and convenient irrigation and drainage for seedling cultivation. Before planting, the soil needs to be leveled and well-rotted farmyard manure and superphosphate should be applied.

2. Sowing and seedling raising

First, soak the onion seeds, then place them in an environment of 25-28℃ to keep them moist and germinate. After watering the seedbed thoroughly, sow them evenly and cover them with fine soil and mulch to help keep them warm and moist for germination.

3. Planting

When the onion seedlings grow to 3-4 true leaves, they are transplanted to the field. Before transplanting, sufficient base fertilizer is applied, mainly decomposed organic fertilizer, and then the land is prepared and made into ridges. Onions are generally planted before winter. Because the weather is cold, it is not suitable to flood them after planting.

4. Field management

During the growth of onions, watering is required frequently to keep the field moist, which is conducive to the plant's absorption of nutrients. In spring, urea should be applied in combination with watering to re-green the onions, and potassium sulfate should be applied during the bulb expansion period.

5. Pest and disease control

The main diseases of onions are downy mildew and gray mold. Downy mildew can be prevented and controlled by spraying with 75% thiophanate-methyl wettable powder, while gray mold can be prevented by spraying with 35% carbendazim wettable powder.

6. Harvest

When 2/3 of the onion leaves turn yellow, the plants begin to fall over, and the outer scales of the bulbs become dry, it means that the onions are ripe and should be harvested in time.