First, the choice of species depends on the season. Solid celery is generally chosen for fall and protected cultivation. Second, soaking and germination. The seeds were soaked in cold water for a day and night to remove the mucilage from the seed coat, then put it out in a cloth bag and put it in a place of 15-20°C. To protect seedlings in protected areas, the seeds can be satisfactorily immersed in warm water at 30°C for 12 hours, removed and placed in the room or at a temperature of 15-20°C to germinate, and 80% of the seeds can be sowed when exposed. If it is the seed that was harvested that year, it is best to use SPP, gibberellin soaked for 12 hours, can promote germination. Third, sowing and management. In the sowing clams, the basal fertilizer that is fully fermented is applied. When sowing, it is first watered and then infiltrated with water after sowing. Before sowing, the seeds should be mixed with fine sand and then spread evenly on the surface. In case of high temperature in September, seedlings can be planted on the surface of the seedlings as much as possible to see the astigmatism on the surface of the seedlings. After emergence, they are removed several times. The celery takes about 40 days from nursery to transplanting. When the cotyledon grows out of the leaves, the seedlings are thinned. Then the seedlings are planted every 5-7 days, and the seedlings are planted 2-3 times. The planting distance is about 6-7 cm. should. When the seedlings grow to 2-3 leaves, they can be topdressed with a fertilizer (5-8 kg of urea topdressing) to keep the soil moist and promote seedling growth. Wireless Video Intercom System Wireless Video Intercom System,Wireless Video Intercom,Wireless Video Door Phone,Wireless Door Intercom System Zhuhai Mingke Electronics Technology Co., Ltd , https://www.zhmkdz-electronics.com