First, the variety selection: summer celery sowing is generally in late May, the value of high temperature period, it should choose high temperature, disease resistance, high quality varieties such as American bailey, glass crisp celery, summer celery, Beijing stick children spring celery, etc. Variety.
Second, scientific land preparation, sowing: should choose a land with high terrain and convenient irrigation and drainage. After applying the base fertilizer, the ground preparation should be 1.2 to 1.5 meters wide. In order to avoid the occurrence of grass damage, 100 g of trifluralin emulsifiable concentrate or 200 g of 48% lax emulsifiable concentrate can be applied in combination with the preparation of the ground, and 35 kg of water can be sprayed on the ground. The ground is then treated to mix the herbicide with the soil. Watering is carried out in the sputum after germination before sowing, and the water is infiltrated and then sown. The live broadcast is carried out in the summer live broadcast mode, and the soil is covered by ±0.5 to 1 cm after sowing.
Third, the seedling period management: after sowing, cover the crop straw, enamel foil, old film, shade net, etc. on the nursery to form a shade, to moisturize, cool down and rain. And pour a small amount of water every 1-2 days to keep the kneading surface moist. After the emergence of the seedlings, the cover is gradually removed to strengthen the seedlings. It is best to choose cloudy or afternoon withdrawal, and first pour water to reduce the temperature of the seedbed to prevent sunburn. After emergence, it is still necessary to pour small water to keep it moist. After the thunderstorm, the well water is poured in time to reduce the ground temperature to prevent dead seedlings.
Fourth, field management: during the growth of celery, the seedlings should be grown with growth, the seedling height is about 10 cm, and there are 4 to 5 true leaves when the seedlings are set, with 7500-8500 plants per acre. After the seedlings are released, keep the kneading surface moist for 20 days before harvesting. Generally, water is poured every 2 to 3 days, and the fertilizer is used every 10 to 15 days. Each time, 5 to 7.5 kg of urea or ammonium sulfate is used. 15 kg, with water.
5. Prevention and control of pests and diseases: The summer diseases of celery are mainly spot disease and spot blotch. In the early stage of the disease, 50% carbendazim WP 500 times or 75% chlorothalonil WP 600 times can be used. Once every 7 days, continuous control for 2 to 3 days. In summer, the main insect pests of celery are aphids. If aphids are found, they can be controlled by imidacloprid and Amerika.
Sixth, timely harvest. From mid-August to late September, celery can be harvested according to market prices to obtain good economic benefits.
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