Appropriate temperature for the germination period of bean seedlings was 20-25°C and 12-18°C at night. After the cotyledon has fully developed, it is 15-20°C during the day and 10-15°C during the night to prevent leggy. After the emergence of true leaves, with 20-25 °C during the day and 15-20 °C at night is appropriate. Gradually reduce the temperature before planting, exercise, so that the seedlings can withstand the low temperature of 5-10°C during the night before planting. The suitable seedling age is 25-30 days.
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