Celery requires cold and humid environmental conditions, and has a certain degree of cold resistance, and its growth temperature is 15-20 °C. The seedling stage is more resistant to high temperature, and the seed begins to germinate at 4 °C. The optimum temperature is 15-20 °C, and the germination is slow under high temperature. At the same time, the germination of celery seeds requires more water and certain illumination.
Celery can be planted in batches throughout the year, depending on the region. For example, in Hangzhou, seedlings are planted in mid-June to August and late January to February. Among them, 1-2 months of seedlings, about 250 grams per mu, using film cover seedlings, seedling age 50-60 days; from mid-June to July, seedlings, about 0.5 kg per mu, using shade seedlings, seedlings Age 40-50 days; nursery in August, about 250 grams per mu, using shade seedlings, seedling age about 50 days. Linyi Fertilizer Network Copyright
Because the celery seed (actually fruit) is small, the peel is thick, the water permeability is poor, the emergence ability is weak, and the seed germination requires a lower temperature. Therefore, the seed needs to be properly treated before sowing to accelerate seed emergence. Generally, soak seeds for 12-14 hours, then rinse with water, wash them by hand, remove the epidermis, dry the surface of the seeds, and then germination at a temperature of 20-22 °C until 50% of the seeds are germinated. . Pour the bottom water before planting, and shade and rain during the hot season. After planting, about 7-14 days after emergence, the seedlings should be kept moist after the emergence of the seedlings. When the seedlings have 4-6 true leaves, they can be colonized. Due to the long emergence time of celery, weeds often appear in the seedbed, and the weeds should be removed when the seedlings have 1-2 true leaves. Linyi Fertilizer Network Copyright
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