Onion wintering management technology

Onions need a long winter to complete their growth and produce in the spring. Faced with a changing climate, if management is not strengthened, extreme weather may cause frost damage and plant death. To prevent this, some simple pre-wintering management measures can help create strong seedlings and ensure a safe overwintering. Let’s learn some onion overwintering management techniques together.

1. Cultivation and loosening of soil

Intertillage cultivation is a low-cost management measure. Although it is not taken seriously by everyone, it is an effective way to cultivate strong seedlings by taking advantage of the "Spring" climate characteristics before winter.

The first tillage should be carried out 15 to 20 days after transplanting and planting, with a depth of about 5 cm, without watering to promote root expansion. The second tillage is from December 15 to 20, with a depth of 8 to 10 cm, combined with the application of overwintering fertilizer.

2. Fertilization

Before wintering, apply seedling-raising fertilizer and wintering fertilizer to promote seedling growth and keep warm.

After the onion seedlings are grown, apply about 10 kilograms of urea per mu. For fields where no base fertilizer has been applied, apply 30 kilograms of compound fertilizer . Around December 15th, apply 3 cubic meters of soil and miscellaneous fertilizer or 300 kilograms of crushed straw per mu.

3. Watering

Scientific watering is the key to cultivating strong seedlings. It is not about frequent watering, but about rational use of water to promote the growth of strong seedlings.

Onions require more water, but the principle of alternating dry and wet cycles should be followed. After the transplanted plants survive, stop watering and carry out inter-row cultivation to thin the seedlings. Stop thinning the seedlings when the leaf color becomes darker, and then apply fertilizer and water. Generally, water the plants once every 10 to 15 days. The time and method of watering for winter are the same as those for garlic .

In short, before winter, onion management requires flexible use of fertilizer, water and inter-cultivation measures to promote the healthy growth of seedlings. The order of the last fertilization and tillage should be fertilization first, then tillage, and finally watering, which will help to successfully survive the winter.