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大棚蔬菜的生长,是在人为的小气候条件下进行的。在管理上要维持其营养生长与生殖生长趋于平衡。促使早开花、多结果,才能达到高产、优质之目的。但往往因疯长而造成减产,所以,在棚菜生产当中,要严格控制疯长。具体措施必须把住以下四道关:1.控温关不管棚内是那种蔬菜,都要把温室控制在适宜温度内。如西红柿最适温为20～25℃,夜间温度控制在15℃左右;黄瓜生长适宜温度为25～30℃,夜间温度控制在18℃左右为好。不管那种蔬菜,低于适温生长缓慢,高于适温造成疯长。因此,必须严格把住控温关。2.降湿关如果某种蔬菜的湿度不适宜,
The growth of greenhouse vegetables is carried out in man-made microclimate conditions. In the management to maintain its vegetative and reproductive growth tends to balance. Promote early flowering, more results, in order to achieve high yield, high quality purposes. However, often due to the madness caused by the cut, so, in the production of greenhouse vegetables, we must strictly control the soaring. Specific measures must live in the following four customs: 1. Temperature control regardless of shed is the kind of vegetables, the greenhouse should be controlled within the appropriate temperature. Such as tomato optimum temperature is 20 ~ 25 ℃, night temperature control at about 15 ℃; cucumber growth suitable temperature 25 ~ 30 ℃, night temperature control at about 18 ℃ as well. No matter what kind of vegetables, slow growth below the appropriate temperature, over-temperature caused by too long. Therefore, we must strictly control the temperature control. 2. Dehumidification off If the humidity of some vegetables is not appropriate,