Cucumbers like warm, cold-resistant, and need a certain temperature difference between day and night. Fertility optimum temperature is 18-30 °C, the most suitable temperature is 24 °C; through low temperature training, short-term (in 48 hours) the minimum temperature of 1 °C began to be frost damage, less than 10 °C dysplasia; maximum temperature 45 °C withered, when higher than Respiration increased above 32°C, poor growth above 35°C, and over 40°C.
Cucumber growth period needs a certain temperature difference between day and night, under normal circumstances 25-30 °C during the day, the temperature in the middle of the night is 18-20 °C, the temperature in the latter part of the night is 12-15 °C, the temperature difference between day and night is about 10 °C. The low temperature at night helps to reduce the respiratory depletion of plants, speed up the transport of assimilation substances, suppress leggy and increase production.
The lowest temperature of cucumber seed germination is 12.7°C, the highest is 38°C, and the most suitable is 28-32°C. The growth rate below 18°C ​​is slow, and the germination rate above 35°C is reduced. The minimum temperature of the seedling stage should not be lower than 13°C, and must not be higher than 33°C. The optimum temperature for cucumber root growth was 20-22°C; the lowest temperature was 12°C, and the highest was 38°C. The roots had more respiratory depletion than 32°C; so the cucumber transplanting time in early spring should be stable above 12°C.
Cucumber growth period needs a certain temperature difference between day and night, under normal circumstances 25-30 °C during the day, the temperature in the middle of the night is 18-20 °C, the temperature in the latter part of the night is 12-15 °C, the temperature difference between day and night is about 10 °C. The low temperature at night helps to reduce the respiratory depletion of plants, speed up the transport of assimilation substances, suppress leggy and increase production.
The lowest temperature of cucumber seed germination is 12.7°C, the highest is 38°C, and the most suitable is 28-32°C. The growth rate below 18°C ​​is slow, and the germination rate above 35°C is reduced. The minimum temperature of the seedling stage should not be lower than 13°C, and must not be higher than 33°C. The optimum temperature for cucumber root growth was 20-22°C; the lowest temperature was 12°C, and the highest was 38°C. The roots had more respiratory depletion than 32°C; so the cucumber transplanting time in early spring should be stable above 12°C.
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