1. More ventilation. The temperature is 20-25℃ during the day and 12-14℃ at night.
2. Water as little as possible after watering thoroughly before sowing until the seedlings grow real leaves. When the soil is dry and cracked, water less.
3. Give plenty of sunlight to prevent being injured. The ultraviolet rays in the sun can inhibit the growth of vegetable seedlings. Use sunshade nets and other measures when the sun is in summer.
4. There must be a small amount of nitrogen fertilizer in the soil, which can be applied as a late topdressing.
5. When sowing, spread as evenly as possible, with loose spacing, which can increase air flow, reduce temperature and prevent excessive growth.
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