1、 Planting

1. Open cultivation: it can be cultivated directly in spring, autumn and winter. It is not suitable to water too much in the seedling stage. Water frequently when the growth peak season is about 10 cm away, so as to keep the soil surface moist. The summer is hot and the light is strong, so it should be properly shaded to prevent heavy rainfall, timely drain the water and ensure the neat emergence of seedlings

2. Dapeng Cultivation: irrigate with frozen water before winter, which is conducive to the winter of seedlings. When the seedlings turn green, loosen the soil and weed. Wait until the peak growth season and keep the temperature at 15-25 ℃. Note that ventilation is not required from January to February

2、 Improve seedling emergence rate

1. Sorting: put the coriander seeds on the flat ground and rub them slowly with flat objects. They cannot be crushed until they are cracked

2. Soaking: soak in warm water at 30-45 ℃ for 2-3 days before sowing, so that the coriander seeds can emerge in about 12-13 days after soaking and washing, about 7 days earlier than the common method

3、 Fertilization

1. Seedling stage: generally, watering and fertilization are not required in the seedling stage. Premature fertilization will not play any role and may lead to root rot

2. Growth period: when entering the growth period, you can choose to water and apply special fertilizer for vegetables. Fertilization should be stopped 20 days before harvest. Generally, it can be harvested about 50 days after sowing

Pay attention to the prevention and control of diseases and pests. Potassium fertilizer and organic fertilizer can be added to improve the disease resistance. Water more at high temperature in summer, and pay attention to the ponding caused by heavy precipitation in summer