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Greenhouse vegetable temperature requirements
The use of greenhouse vegetables, different varieties have different requirements for temperature, do a good job with varieties and temperature regulation and management is the key to a good greenhouse vegetables. One, pepper. Hi-temperature, germination temperature is 30-45 °C, suitable temperature for growth during the day is 26-30 °C, 18-22 °C at night, temperature below 15 °C, the seeds can not germinate, flowering can not be fertilized. In cultivation, greenhouse temperature must be maintained at 20-25 °C, below 18 °C can not grow normally. Second, tomatoes. Hi-temperature, 25-30 °C is the best germination temperature. The suitable temperature for growth is 27°C during the day and 17°C during the night. The minimum ground temperature during the cultivation period is 10°C, the minimum temperature based on the growth is 5°C, the most suitable temperature is 28°C, and the maximum temperature may not exceed 38°C. Third, celery. Celery likes cold, the required growth temperature is 20-22°C during the day and 15-18°C during the night, and the temperature difference between day and night is 4-5°C. Ground temperature requirements 18-20 °C, the minimum can not be lower than 3-6 °C. The late period is not lower than 6-8 °C, otherwise it cannot grow and develop normally. Fourth, cucumber. The temperature is more stringent, the suitable temperature is 24-26°C during the day and 14-15°C during the night, the lower limit of the low temperature is 10-12°C, the growth is stopped when the temperature is below 10°C, and the root activity is weak above 30°C. Shrinking. Seedling growth period can not be less than 18 °C, the minimum temperature of 20-23 °C.