Greenhouse vegetables have different requirements for temperature. The following describes the suitable temperature for several vegetables. It is for reference only:
Peppers are hot, germination temperature is 30--45 °C, room temperature is 26--30 °C during the day, 18--22 °C at night, seeds below 15 °C can not germinate, flowering can not be fertilized. The ground temperature should be kept at 20-25 ° C, below 18 ° C, poor growth.
Tomatoes prefer high temperature, germination is ideal at 25--30 °C, and the room temperature is 27 °C during the day. The limit temperature of cultivation is 10 °C, the temperature is 5 °C, the lowest temperature for root growth is 0 °C, the optimum temperature is 28 °C, and the highest is 38 °C.
Celery likes to be cold, the room temperature is 20--22 ° C during the day, 15--18 ° C during the night, and the temperature difference between day and night is 4--5 ° C. The ground temperature is between 18 and -20 ° C and the minimum temperature is not lower than 3 - 6 ° C. Late 6-8 ° C, otherwise it can not grow and develop.
Cucumber has strict temperature requirements. The suitable temperature is 24-26 °C during the day and 14-15 °C during the night. The temperature limit is 10--12 °C. The temperature stops below 10 °C, and the root activity is above 30 °C. Weak, the leaves are shrinking. Seedling stage, growth period can not be lower than 18 ° C, the most suitable ground temperature is 20--23 ° C.
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