Techniques for early cultivation of spring celery in greenhouse
Seedlings are raised in mid-December, with a seedling period of 7 days. Seedlings are generally not watered and do not require topdressing. Only when water is found can watering can be used in a watering can to make the seedlings grow slowly and avoid excessive growth.
Planting was first prepared as a base fertilizer. After the Spring Festival, after the vegetables fell to the ground, level the ground to make a 1-meter wide loquat, and evenly spread a layer of farm manure on the loquat surface, 10 kg per square meter, re-turn it again, and prepare the loquat loquat to plant. Followed by planting seedlings, 6-7 rows per planting, 8-10 centimeters between holes, and irrigation.
Generally, it is not necessary to water the seedlings for management, and loosen the soil when the heart leaves begin to grow. During the day, the temperature is kept at 15 ℃ -20 ℃, and at night 10 ℃. When the plant has 5-6 large leaves, 20-30 grams of urea per square meter is chased, and large water is poured while chasing. After topdressing, the noodles are kept moist, and the temperature can be increased to 20 ° C-25 ° C. After pouring large amounts of water for several times, the celery leaf stalks can be quickly extended and harvested.
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