(1) seedling raising. Root celery can be planted by direct seeding or seedling raising, but seedling raising transplantation is often used because of slow seedling emergence, difficult management and poor seedling quality. Before sowing, seeds can be soaked in cold water to accelerate germination. The seeds are soaked in cold water for 24 hours, then put in a cloth bag and placed in a cold place to accelerate germination. They are washed with cold water/kloc-0 times a day. After the seeds sprout, sow. You can also use 500 ~ 800 mg/L gibberellin to soak the seeds for 8 ~12 hours before accelerating germination, which can shorten the time and improve the germination potential and germination rate. During seedling raising, when the seedlings have 3-4 leaves, divide the seedlings according to the row spacing of10cm×10cm.

(2) colonization. When the seedlings grow to 9 ~12 true leaves, plant spacing is 25 ~ 40 cm and row spacing is 25 ~ 40 cm. The higher the density, the smaller the fleshy roots. Root system is not easy to recover after injury, so measures should be taken to protect and promote roots before and after planting, so as to facilitate root system recovery and promote seedling survival.

(3) Field management. In the early growth stage after the survival of the seedlings, the seedlings grow slowly and need little water. After proper topdressing and watering, shallow water intertillage should be carried out to keep the field soil moist and make the topsoil slightly dry, that is, dry on the top and wet on the bottom.

In the vigorous growth period after planting, topdressing should be done for 2 ~ 3 times, and the amount of watering should be increased to ensure the supply of water and nutrients, so as to promote the expansion of roots and the timely expansion of fleshy roots.

During the growth period, the old leaves and lateral branches should be removed in time. During the expansion period of fleshy roots, the rhizosphere soil can be peeled off and the fleshy lateral roots can be trimmed with a knife to make the main roots grow hypertrophy, with smooth surface and neat shape.

(4) harvesting. Root celery should be harvested at the right time, which will affect its yield and quality too early or too late. The suitable storage temperature is 0 ~1℃.