How does celery overwinter in winter? These four measures must be seen by vegetable farmers!

Celery is a kind of vegetable that people like more. Generally, celery can produce good yields and can be produced annually. However, if winter celery is poorly managed or encounters special weather, it will easily cause large-scale dead seedlings. Winter management in winter is very important. So how is celery managed in winter?

1. Seedling management

Celery is cold and cold-resistant, and has strong cold resistance. However, the seeding time of overwintering celery is in the high temperature period from August to September. Its seeds will stop germinating once it exceeds 30 degrees. Provide a suitable environment. First, set up a shading net on the seedbed to avoid direct sunlight. Before planting, water the soil to reduce the soil temperature and increase the humidity, and keep the soil loose to prevent the seedlings from suffocating from hypoxia. 4-5 days after sowing, a layer of seedlings will grow, but this is actually weeds, which should be removed in time to avoid affecting the growth of seedlings. After about 7-10 days, the seedlings break through the soil. At this time, water the water in time to keep the soil moist. After the seedlings are unearthed, remove the shading net and keep the temperature at 10-20 degrees. Also avoid strong light. When the seedlings grow 3-4 true leaves, and time to seedlings, keep the seedlings about 2cm.

2. Colonization management

When the seedlings grow to 5-6 true leaves, they can be planted. Before planting, fertilize the soil. According to the fertility of the soil, apply 4000-6000 organic fertilizer and 100-150 compound fertilizer per acre. Its tillage and soil are mixed evenly, and it is making hoe. When planting, seedlings should be drenched with water. When seedlings are planted, take care not to damage the root system, transplant in stages, and reasonably densely plant. The depth of burial when planting is the same as the original depth of the seedlings. The heart leaves of the seedlings are exposed. Watering to slow down the seedlings.

3. Cold insulation

The suitable growth temperature of celery is 15-20 degrees. When the temperature is high, the watering and ventilation methods should be increased to control the temperature. The maximum temperature should not exceed 22 degrees. When the temperature drops, increase the cover film and reduce the ventilation. Ensure the temperature, the temperature should not be lower than 10 degrees. In addition, celery is a low-light plant. The length of light will affect its growth, but it is not easy to control the light in winter, it is easy to pump it early, and it affects the yield and quality. Generally, it is best to control the light for 6-9 hours a day.

4. Management of fertilizer and water

Celery is more particular about watering and topdressing. After planting, it should be carried out according to the growth of seedlings. Before the heart leaves grow, the soil must be dry and wet. When the leaves grow out, control the watering to promote root growth and development.

When the leaves have grown upright, in order to strengthen the supply of water 3, to keep the soil moist at this time, nitrogen fertilizer can be applied once again, 12-15 kg per acre, which can be flushed by watering to make the fertilizer more easily absorbed. When the leaf of the heart begins to enlarge, apply potassium fertilizer at this time to accelerate the enlargement of the heart leaf and improve the yield and quality.

The above is the management of celery overwintering. Celery has cold resistance. In areas where the lowest temperature in winter is above minus 5 degrees, the open field can overwinter without protection. In areas where the lowest temperature in winter is around minus 10 degrees, open areas need to be protected by overwintering. If the minimum temperature in winter is lower than minus 12 degrees Celsius, you must not open the ground to overwinter.

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