Key points of anti-season cultivation techniques of big celery

In recent years, celery with high nutritional value has become more and more popular among the people. There are many varieties of celery. Today we mainly study the cultivation points of big celery. With its characteristics of off-season, less fiber and large size, it is popular among consumers and foreign businessmen in Beijing and Tianjin.

1 variety selection

Choose high-yield, disease-resistant, high-quality imported celery varieties, commonly used in the United States Ventura, California King, Gaoyou and so on.

2 cultivating strong seedlings

2.1 Seed treatment. In order to prevent seed-borne leaf spot and spot blight, soak seeds in warm water at 48 °C for 30 min before sowing, then pack them with wet gauze at 15 °C ~ 20 °C, rinse with water for 1~2 times a day, wait 50 When the seeds are white, they can be sown.

2.2 Sowing. The field soil and the decomposed organic fertilizer which have not been planted with Umbelliferae in the past 3 years are sieved and mixed at a ratio of 6:4, while 50% carbendazim WP and 50% thiram are used per cubic meter of nutrient soil. 60 g of each of the wettable powders was subjected to soil disinfection. When planting, spread 2/3 of the treated nutrient soil on the bed surface, pour water, and after the water has been infiltrated, sprinkle the seeds evenly on the bed surface, and then cover the remaining 1/3 of the nutritious soil on the seeds. The mulch is covered with mulch film, and the mulch film should be removed in time after emergence. The general seedling bed is 15m2, and the seeding amount is about 50g.

2.3 Seedling management.

1 temperature. The room temperature at the seedling stage should be maintained at 20 °C ~ 22 °C during the day and 12 °C ~ 14 °C during the night;

2 humidity. Keep the bed surface dry and wet;

3 seedlings weeded. Weeds and diseased seedlings, weak seedlings and over-milk seedlings were removed in time to keep the seedling distance at around 2 cm.

4 topdressing and watering. The celery seedlings are long, and the water can be replenished according to the humidity of the kneading surface. In the later stage, the watering should be controlled to avoid the humidity and the disease causing the dead seedlings. Topdressing can properly apply some quick-acting nitrogen fertilizers according to seedlings and growth.

5 refinery. One week before planting, the amount of air release is gradually increased to adapt the seedlings to the environment after planting.

3 colonization

Apply enough base fertilizer. Generally, combined with the soil preparation, the farmland fertilizer is 6000kg and the superphosphate is 50kg. The plot should be thin and flat, the soil and fertilizer are evenly mixed, and then made into a flat of 3 m wide. When planting, proper planting and fertilizer management is the key to high yield and quality of Dacai. Generally, about 5,000 plants are planted in acre. Ditch the ditch at a line spacing of 40 cm, pour the foot water in the ditch, and sit on the water at a planting distance of 30 cm. When transplanting, you should pay attention to the selection and deterioration, the root system should be stretched into the ditch, and the planting depth should not be buried.

4 Fertilizer management

Since celery is a shallow-rooted vegetable with a low planting density, in order to promote its compact development to a large tree, in addition to applying the base fertilizer, the topdressing should be appropriately increased, and the topdressing fertilizer should be based on quick-acting nitrogen fertilizer, with a certain amount of phosphorus and potassium fertilizer. Generally, the first top dressing is carried out 7 to 10 days after planting, 10 kg of compound fertilizer and 5 kg of urea are applied; the plant grows into a vigorous growth period about 30 days after planting, and 25 kg of compound fertilizer is generally applied to the plant. When turning to erect growth, the petiole enters the hypertrophy period, topdressing every 10 days, and chasing 2 to 3 times. Each time, 10 kg of urea and 10 kg of potassium fertilizer are used. It can also be combined with disease-preventing foliar application of potassium dihydrogen phosphate and boron fertilizer to promote the growth of leaves and petiole, prevent petiole cracking and improve quality. 3 days after planting, the seedling water was poured once, and the seedlings were planted after the seedlings were slowed down. After the stalks of the celery began to expand, the seedlings were finished, and the watering was started. The plants were poured once every 5-7 days to keep the soil dry and wet. Enter the vigorous growth period, increase the amount of watering, pour 1 water for 4~5d, stop watering 7d before harvest. Pay attention to the soil in the middle and late period, which can prevent lodging and soften cultivation.

5 pest control

5.1 Spot blight. In the early stage of the disease, spray 7 times of chlorothalonil WP 500 times, or spray 50% of carbendazim suspension 500 times, spray once every 10 days, and spray 2~3 times.

5.2 Rhizome-based rot. The roots can be irrigated with 50% carbendazim WP or 70% thiophanate-methyl WP, or roots can be alternately rooted.

5.3 Cabbage, Plutella xylostella. With 1.8% avermectin EC 3 000 times solution, Emerald wettable powder 600 ~ 1 000 times spray control, in order to increase the control effect, you can add 500 times liquid in the liquid.

For the wonderful pictures and popular comments on the cultivation of the big celery, you may be interested in the following recommended contents. Welcome to read.

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