The main points of celery seedlings in spring and summer
Celery can be cultivated throughout the year, and the time and method of its cultivation vary with the cultivation time and method.
1, spring cultivation seedlings
(1) Seed treatment. Sow 5 to 6 days before sowing for 1 to 2 days. The sun can not be directly leveled on the concrete floor. Soaking for 24 hours requires changing the water 1 or 2 times.
(2) sowing. Seedlings in open field are sown from late October to the end of November, covered with antifreeze during the winter, or raised in the greenhouse in the middle and middle of February. The seeding rate is 10 grams per square meter of seedbed and the amount of 7500 grams per hectare is used. Each kilogram of seed can be sowed with 5 kilograms of fine soil after sowing. After broadcasting, cover O.3 cm fine soil and shade net.
(3) Seedbed management. Before planting seedlings, the humidity of the seedbed is mainly maintained, and when the seedlings top soil, the shade nets are removed. After emergence, the seedbed must maintain a certain humidity, but it should not be watered. Seedlings were started 2 to 3 days after seedling emergence and 1 seedling at the 2 leaf stage. When the seedlings grow to 3 to 4 leaves, watering can be controlled appropriately to promote the development of the root system. When the temperature drops below 0°C, shade nets or straw curtains can be used to cover them. In the greenhouse, seedlings and cultivation can be fertilized later in the nursery to promote its growth. If the night temperature is too low inside the greenhouse, attention should be paid to insulation.
2, summer cultivation seedlings
Sowing period is from late March to late May. Seeding rate is 7 grams per square meter of seedbed. Soak seeds 24 hours after sowing. Earth cover O. 8 ~ 1 cm. After emergence and time seedlings, the seedling spacing is about 2 cm. Seeds sown in late April no longer cover the film. Before the seedlings are planted, shade nets should be installed to facilitate moisturizing. Seed bed specifications, requirements with the spring cultivation seedlings.
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