Celery high-yield cultivation method

I. Variety selection

Choose cold-resistant, drought-resistant, disease-resistant, fast-growing, high-quality and high-yield varieties, such as: American celery, Tianjin solid celery, solid celery.

Second, nursery seeding

1, seedbed selection. Choose sandy loam with sunny, leeward, high topography, convenient irrigation and drainage, and water conservation, and build a seedbed 1.5 meters wide and 10 meters long. Under normal conditions, seedlings per 25 m2 rice can be used for planting 667 square meters. Seed bed 667m2 apply organic fertilizer 5000 ~ 6000 kg, diammonium 25 ~ 28 kg, urea 15 ~ 20 kg, finely chopped twice, leveling spare.

2, soaking germination. The celery seed is small, the seed table is leathery, there are oil glands, hairy hair, and small furrows. The buds are weak, and they are not easy to emerge at high temperatures. Therefore, soaking seeds should be used for germination. Before soaking seeds, the seeds are repeatedly rubbed, the seed coat is softened, the seeds are soaked in warm water for 24 hours, and the seeds are soaked in a cloth and placed under a condition of 25 to 28°C for germination. The seeds are washed once a day for 5 to 7 days until 80% of the seeds are sown. Dew can be sown.

3, timely sowing. In the northern region, the best sowing date is in late April. It can avoid the cold winds in early April and avoid the high temperature in late May. The planting age is 55 to 60 days.

4, precision seeding. Fill the bottom water before sowing. After the water seepage, mix the seed with a little fine sand and evenly spread it on the seedbed to ensure that each m22 ~ 3g seeds will cover 0.5~1cm fine soil after sowing, and then on the bedside. The use of bamboo pieces from a small arch, covering the membrane pressure, can play a role in water insulation, 6 to 8 days to emerge.

5, seedling management. After the emergence of celery not only to prevent the harm of low temperature, but also to avoid high-temperature burns. At low temperatures, the film must be tightly pressed, and at high temperatures, ventilation, membranes, shading, and water management should be used. When the seedling grows out of the first true leaf, the covering can be removed, and the seedlings are planted at intervals of 2 to 3 cm. After the seedlings are sprayed, 600 times chlorothalonil or 500 times mancozebite is applied. When watering, the water is sprayed every 667 ?. Application of urea 6 ~ 8 kg.

Third, timely planting

In the northern part of the country, the appropriate planting period in late May is to select 10 to 15 cm plant height, with 5 to 6 true leaves of vigorous seedlings, planted at a row spacing of 25 cm and plant spacing of 10 cm, 25,000 seedlings per 667 m2, planting depth to "Deeply immersed in the light, shallow rootless" as the standard, in order to ensure the survival rate, the side of the planting watering, 2 to 3 days and then fill 1 water. Before planting 667m2 applied organic fertilizer 7000 ~ 8000 kg, diammonium 25 kg, urea 8 kg, potassium sulfate 6 kg, deep-turned 28 ~ 32 cm, leveling for rake, width 2.5 meters, length 10 meters.

Fourth, field management

1, change the seedling period. From the time of planting to plant return to normal growth for about 18 days, this stage should pay attention to rooting slow seedlings, warming and protecting the earthworms. Mainly do a good job of cultivating loose soil, play a role in raising the temperature, water and fertilizer, in order to promote the growth of the root system.

2, seedlings. After the seedlings are controlled, the inflow of water is determined, and the seedling time is determined according to the specific conditions of the weather, generally about 10 days. When the seedlings are dark and the heart and leaves grow slowly, the combination of watering 667 m2 and applying 10-15 kg of urea.

3, long-term. After the seedlings are watered and fertilized, the celery enters a vigorous growth period. This period is a crucial period for ensuring high and low yields and good quality. Therefore, the management of water and fertilizer is the key. To ensure the needs of celery for water and fertilizer, water can be poured for 5 to 7 days. , Spread 10 to 10 kg of urea every 10 to 15 days with water, and do a good job of weeding.

4. Pest control. The main pest of celery is aphids and the disease is brown spot. Insect pests can be sprayed with 1000-1500 times dichlorvos or sprayed in 2000-2500 times. Brown spot can be sprayed with chlorothalonil 600-800 times or sprayed with thiophanate-methyl 800-1000 times.

5, harvest. The celery grows to a height of 55-65 centimeters. It began harvesting in August. When harvested, it was shoveled from the base of the root and cut the roots of the roots with a knife to remove old leaves for sale.

V. Analysis of production

According to the years of cultivation and production test, under the normal cultivation conditions, the weight of single celery is 200-300 g, the number of 667m2 harvested plants is 25,000, and the yield per 667m2 is 7500.

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