Cucumber cultivation without greenhouse thermometer

Cucumber cultivation without greenhouse thermometer. Cucumber is fond of warm, not resistant to cold, growth and development needs certain temperature difference between day and night. Bearing warm to 18 The optimum temperature 24 ℃ to 30 ℃,; By low temperature exercise, short time ( Within 48 hours) Minimum temperature 1 ℃ started cold, below 10 ℃ dysplasia; The highest temperature 45 ℃ water, breathing increase when higher than 32 ℃ above, more than 35 ℃ growth stunted growth, more than 40 ℃ the fallen petal, fruit. Cucumber growth period needs a certain temperature difference between day and night, normally 25 - during the day 30 ℃,'s temperature is 18 Temperature 20 ℃, late for a 12 - About 15 ℃, 10 ℃ temperature gap between day and night for the best. Low temperature at night is helpful to reduce plant respiration consumption, accelerate the assimilation of material transportation, moderate growth, inhibition of increased production. Minimum temperature of 12 cucumber seed germination. 7 ℃, the highest 38 ℃, 28 - the most appropriate 32 ℃, below 18 ℃ development is slow, more than 35 ℃ lower germination percentage; Seedling period shall not be less than 13 ℃, minimum temperature shall not be higher than 33 ℃. Cucumber root growth of optimum temperature of 20 - 22℃； Minimum ground temperature 12 ℃, the highest for 38 ℃ began to rot, more than 32 ℃ root respiration consumption increase; So early spring cucumber transplanting time should be stable ground temperature reaches more than 12 ℃. Planting cucumber leave the greenhouse thermometer, instrument to introduce you to a greenhouse thermometer: MMG - 3 a maximum and minimum thermometer, the product name: maximum and minimum thermometer, thermometer, greenhouse thermometer use areas: greenhouses, the meteorological department, specifications, such as description: models: MMG - Three types: structural style of the maximum and minimum thermometer: can flip eaves, circular button material: beige ABS shell temperature range: - 40 - 50 c, red and black single calibration accuracy: + / - Packing: 1 c 100 shipping/box, 50 / box only four express, product features: maximum and minimum thermometer is used to record in a certain period of time the maximum temperature and minimum temperature in the air. Five, the maintenance notice: when using, transportation and storage should be upright, not from vibration of the use of so as not to cause the mercury out of line. With this type of greenhouse thermometer, planting cucumbers don't have to worry about temperature control.