Under the control of greenhouse thermometer vegetable shed, infinite vitality

Plant the most exquisite temperature, light, moisture and nutrition. Among them, is the most difficult to control the temperature in the greenhouse, if temperature can not meet the plant requirements, it will stop growing and even wither. Canopy temperature variation trend within the same as the land, but the range of big temperature gap between day and night. Ample light during the day, if sealed heat temperature quickly, up to 40 ─ 50 ℃, 20 ℃ higher than the bird. Rainy day, the raising temperature effect is poor, the lowest heat loss at night temperatures generally 1 ─ 3 ℃ higher than bird. Relative stable ground temperature than the temperature, usually 10 ─ 20 ℃. Heat loss is in different position varies, greenhouses transverse distribution of high middle and low on both sides, so central greenhouses plant than on both sides of the larger plants. Greenhouses vertical distribution, has the sun during the day, the high temperature of the top and bottom is low, at night, cloudy day, on the other hand. To monitor is suitable for vegetable growth temperature, each relative place of the traditional way is a maximum and minimum thermometer, high sensitivity of mercury hg, it can measure the maximum temperature and minimum temperature inside the greenhouse, can double eaves can also make a rain and dust flap. The staff according to the change of temperature, at any time for greenhouse cooling measures, meet the conditions of vegetable growth and development, so as to obtain good quality and high yield.