First, nurture strong seedlings

1. Prepare the seedbed: In the greenhouse, nursery pods are planted in front of the greenhouse and on the east and west gables. The pods are as narrow and narrow as possible to facilitate water spray and save land area. After flattening and simmering, apply 3 centimeters thick farmyard manure, turn 10 centimeters deep, scatter the soil blocks, and mix the dirt evenly to level the surface. Prepare bamboo baskets and shade nets for shade after sowing. At the same time, fine sand is prepared, sieved and stacked on the side so that the seeds of celery can be covered after sowing.

2, soaking germination: 600-700 grams per acre greenhouse sowing, calculate the actual seeding volume. Soak the seeds with warm water for 24 hours, wash them several times with water, gently rub them with your hands, and open the skin until the seeds are scattered. Spread the seeds and let them dry. When the seeds are half dry, put them in mud tiles or bowls, cover them with a damp cloth, or wrap them in a tile pot embedded in earthy soil with a damp cloth or mix in sieving sand with a volume of 3-5 times the seed volume. , soaked in water, then put into a clean mud pot or wooden box, placed in a cool place at a temperature of 18-20 °C germination, turning twice a day, always keep the sand moist, 6-7 days to bud.

3, fine sowing: sowing 10 grams per square meter. First step on the noodles and then water the water. After the water has penetrated, fill up the noodles with fine soil and spread the seeds. After sowing, cover 1 cm thick sand and cover the mulch.

4. Seedling management: (1) Control weeds. After planting fine sand, in order to prevent overgrown weeds, 0.2-0.25 liters of 48% diammonium EC is used per acre (or 0.1 liters of 72% Dole EC), and 30-50 litres of water is sprayed on the surface . Weeds germinate and emerge earlier than celery and can be killed in the germination stage. Individual species of weeds are not killed and can be removed manually.

(2) fertilizer and water management. After the emergence of the mulching film, immediately spray water with a watering can, after seeing the surface to see dry see wet. Because celery is hardy, it is also in the greenhouse of Fruit and vegetable, so the temperature and the ground temperature can meet the needs. Due to high air humidity and low ventilation, attention should be paid to water control. Celery seedlings are not topped. If the growth is weak and the fertilizer is lacking, urea can be topdressed with water once in 4-5 leaves, 5 kg/mu or 0.2% urea solution.

(3) The seedlings grow long. The seedling stage of celery requires seedlings twice. The first time the seedlings are unearthed, the cotyledon unfolds when the true leaves are barely exposed; the second time when the seedlings grow to 2 leaves and 1 heart, the seedlings are once again, the seedling distance is 3 cm, and the seedlings are seeded. , weak seedlings, diseased seedlings all unplugged.

(4) Control pests. It is necessary to protect natural enemies such as ladybugs, wasps and grasshoppers. When aphids are found at the seedling stage of celery, it is generally possible to use 20% cypermethrin 3000-4000 times solution or 50% anti-influx (evaporation) 2000-3000 times solution or 20% quick kill 3,000 times solution of diclofenac Prevention.

Second, scientific colonization

1. Site preparation basal fertilizer: Before planting, make 1 meter wide hoe, apply 5-6 tons of manure or chicken manure per acre, or apply about 50 kilograms of bio-organic fertilizer. The land with poor soil quality and low fertility will be properly used, otherwise Reduce it. If you use chemical fertilizers for soil preparation, you must pay attention to the combination of nitrogen, phosphorus, and potassium, re-apply phosphate fertilizers, and use less nitrogen and potassium fertilizers. Because the early seedlings are small, they need less nitrogen and potassium fertilizers; in the medium term, nitrogen and potassium fertilizers can be supplied with water to provide adequate nutrition. Then plow 20 centimeters and flatten the surface.

2. Proper planting: After the greenhouse wall and back roof have been built, the front roof skeleton will not cover the film after it is installed. From late September to early October, there will be no colonization before frost, and the film will be covered after planting. Sunlight Greenhouse Spring celery is planted in mid-January and harvested after autumn and winter pickled vegetables.

3, watering before planting: 1-2 days before planting seedlings suitable amount of irrigation, so that the first day with root soil from the seedlings, at the same time, eliminate pests and weak seedlings, and spray to eliminate aphids.

4. Density of planting: The size of the vegetable vine should be determined according to the local water conservancy conditions. Each row is planted with 5 rows. The row spacing is generally 20 cm and the spacing between the rows is 8-12 cm.

5, planting methods: After the seedlings to be grading, the size of the seedlings were planted separately, in order to achieve a neat and consistent. Digging with a spade shovel, celery seedlings do not cut the roots do not go to the leaves, the roots were planted vertically into the hole, the depth of the planting seedlings to maintain the original depth of soil watering, planting seedlings are too shallow and deep are not conducive to the growth of celery.

6, pouring planting water: After planting, the sorghum surface leveling, immediately simmering watering. When planting water, the “heart” or leaves of a few seedlings may also be deposited in the mud, and they shall be pulled out and raised in time. Then, the water seedlings shall be controlled to promote the slowing of the seedlings and the root system shall develop downward.

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