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所谓四段变温管理,就是根据蔬菜(黄瓜、番茄等)本身在一昼夜中生理活动中心变化规律,分成四个阶段来调节温度,使其更多地制造光合产物,尽可能地减少呼吸消耗,以期达到增产、节能的目的。据试验,黄瓜(特别在盛果期)应用此技术。较昼温28℃、夜温14℃的恒温管理,增产20％。 一、6—12时为促进光合强度段。即在日出后,迅速提高温度,黄瓜达到30℃、番茄达到
The so-called four sections of temperature management, is based on vegetables (cucumber, tomato, etc.) in a day and night changes in physiological activity center, divided into four stages to regulate the temperature, make it more to produce photosynthetic products, as much as possible to reduce respiratory consumption, To increase production, energy-saving purposes. According to the experiment, cucumber (especially in the full fruit period) the application of this technology. More daytime temperature 28 ℃, night temperature 14 ℃ thermostatic management, an increase of 20%. A, 6-12 to promote the photosynthetic intensity section. That is, after sunrise, the temperature rises rapidly, the cucumber reaches 30 ° C, and the tomato reaches