Planting date : Determine the appropriate planting date according to planting season, climatic conditions and other factors. For example, spring open field cultivation is usually sown in mid-February to early March for seedlings, while autumn open field cultivation can be sown in late July to early August.
Sowing method : Before sowing, the seeds are left in the hot sun for a day to improve the germination rate. Then, spread seeds evenly on the nursery bed, cover with fine soil and moisturize and keep warm. After the seeds sprout, the plastic film should be opened during the day to replace the fresh air. When true leaves appear, spray light manure with a watering can. When the soil is short of water, it should be replenished in time.