Overwintering cultivation and management techniques of celery

Celery has a strong cold tolerance, and its seedlings can withstand a low temperature of minus 10 degrees for a short time, so it is also one of the common vegetables in autumn and winter. However, when planting in winter, the long-term low temperature environment will also cause freezing damage, resulting in death and affecting economic benefits, so how to manage celery overwintering? Let's take a look.

1. Seedling stage management

Celery likes cold and has strong cold tolerance, but the sowing time of overwintering celery is in the high temperature period from August to September, and its seeds will stop sprouting once it exceeds 30 degrees, so it is necessary to provide a suitable environment for it to emerge neatly. First of all, it is necessary to set up a sunshade net on the seedbed to avoid direct sunlight, watering before sowing, reducing soil temperature, increasing humidity, and keeping the soil loose to avoid hypoxia and asphyxiation of seedlings. 4-5 days after sowing, a layer of seedlings will grow, but in fact, these are weeds and should be pulled out in time so as not to affect the growth of seedlings. About 7-10 days later, the seedlings break the soil, then timely watering, keep the soil moist, after the seedlings are unearthed, you can remove the sunshade net, keep the temperature at 10-20 degrees, and avoid strong light at the same time. When the seedlings grow 3-4 true leaves, the seedlings should be interspersed in time to keep the seedlings about according to 2cm.

2. Planting management

When the seedlings grow to 5-6 true leaves, they can be planted and fertilized before planting. According to the fertility of the soil, 4000-6000 organic fertilizer and 100,150 compound fertilizer are applied per mu, and the ploughing and soil are mixed evenly. When planting seedlings, water should be thoroughly watered, seedlings should be raised with soil, be careful not to hurt the root system, graded transplanting, reasonable and close planting should be done, the depth of buried soil should be the same as the original depth of the seedlings, the heart leaves of the seedlings should be exposed, and the seedlings should be watered in time after planting to help slow down the seedlings.

3. Prevent cold and keep warm

Celery is suitable for growing at 15-20 degrees Celsius. When the temperature is high, it is necessary to improve the method of watering and ventilation to control the temperature. The maximum temperature should not exceed 22 degrees. When the temperature drops, it is necessary to increase the cover film and reduce ventilation to ensure the temperature. At this time, the temperature should not be lower than 10 degrees. In addition, celery is a kind of low-light plant, the length of light will affect its growth, but the winter light is not easy to control, it is easy to bolting early, affecting the yield and quality, generally controlling the light in 6-9 hours per day is the best.

4. Fertilizer and water management

The watering and topdressing of celery should be carried out according to the growth status of the seedlings after planting. Before the heart leaves grow, the soil should be dry and wet. After the leaves grow out, the watering should be controlled to promote the growth and development of the root system. Be careful when the leaves have grown upright, so as to strengthen the water supply and keep the soil moist at all times. At this time, you can also apply nitrogen fertilizer once, 12-15kg per mu, which can be flushed by watering to make the fertilizer more easily absorbed. Be careful when the leaves begin to enlarge, it is necessary to apply potash fertilizer to speed up the hypertrophy of heart leaves and improve yield and quality.

The above are celery overwintering cultivation and management techniques, hope to help you, want to know more celery planting knowledge, please pay attention to us.