Before sowing, apply enough rotted base fertilizer, 1500~2000 kg per mu, plus 20-25 kg of diammonium phosphate, evenly spread in the field, tilling and harrowing to make flat beds.

Coronation planting is mainly taken by sowing or strip sowing, sowing after covering the soil about 1 cm, raking and suppressing. Spring sowing is generally in March to April, fall planting in August to September, winter planting in November to December. Small-leafed varieties are suitable for dense planting, with a large amount of seed, 2 to 2.50 kg per mu; large-leafed species with many lateral branches, carry out a large degree, with a small amount of seed, about 1 kg per mu.

Field management:

Coronation growth temperature 17 ~ 20 ℃, early spring sowing weather is still relatively cold, and accompanied by the phenomenon of inverted spring cold, so the need for sowing in the beds covered with mulch film or the old greenhouse film, surrounded by soil compaction, cold insulation, to be warmer, seedlings out of the ground before the top of the film to be uncovered film. Protected planting more than 25 ℃ to open the vents to release the wind.

When the seedlings grow to about 10 centimeters, small-leafed species according to the plant, row spacing of 3 to 5 cm square, large-leafed species according to the 20 cm square between the plucking, while eradicating weeds.