1. After 4 to 5 days after sowing, seedlings can be emerged, and the seedlings must be broken and induced by membrane in stages in a timely manner. The seedlings grow to 2 to 3 leaves during seedlings. About 20 days after sowing, the fleshy root of the radish began to expand. At this time, the mud was pressed against the film break to prevent the film from being lifted.
2. The optimal growth temperature of radish is above 12°C. The management of the early growth period should be based on heat preservation, appropriately increasing the temperature in the shed, and promoting the growth of rosette leaves. In case of strong cold air, cold-proof materials should be stamped. In the late growth period, when the temperature rises, it should be ventilated and cooled in time. During the day, the temperature in the shed is controlled between 20°C and 25°C. At night, the temperature inside the shed is controlled at about 15°C. The shed film and greenhouse film are gradually removed depending on the weather conditions. After the middle of April, the greenhouse film can be removed for open cultivation.
3. Generally, watering is not required during the growth of the radish, and watering is only performed when the soil in the trench is white. During the root swelling period of radish, the water requirement is larger, and it may be better to use drip irrigation when water can be soaked in soil moisture. If furrow irrigation is used, it should be carried out at noon on sunny days, and the water should be ditched and drained for 2 hours after filling.
4. The first topdressing is performed 30 days after sowing, and the second top dressing is performed about 45 days later. When composting, 25 kg of compound fertilizer per acre can be used to irrigate the root of the liquid fertilizer with a concentration of 0.5%. If the soil moisture is high, it can be applied at a depth of 10 cm from the root of the radish.
5. Pest control. The pests are mainly aphids and cabbage caterpillars. The main diseases are downy mildew and black rot, and the pests and diseases are prevented and treated in a timely manner.
6. Timely harvest. When the fleshy root diameter is more than 5 cm and the weight is about 0.5 kg, it can be harvested in batches. When harvesting petiole leaves 3 to 5 centimeters cut, cleaned after listing, if you do long-distance transportation, do not wash.
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