Winter greenhouse planting insulation is a key
In winter greenhouse planting, winter insulation is a key, especially in deep winter season, the outside temperature has dropped to minus zero. Once the cold wind enters the shed, it will cause great damage to the growth of crops. How can we prevent the crops from being chilled? What are the three methods that are necessary here?
One off, windshield at the door
From the buffer room to the greenhouse, it is necessary to open and close the door and the door is vulnerable to weak vegetables, low yield, and prone to frost damage. If a piece of film twice the length and 1.5-2m wide is hung on the south side of the walkway inward, and the bottom side is tight, for heavy earth wall greenhouses, the film can be placed on the interior side. Thick curtains are recommended. It can effectively alleviate the cold wind at the doorway and allow the cold wind entering the greenhouse to be buffered. Naturally, it is not so cool, and the damage to the crop is also reduced.
Two off, uptake windshield film (also called tuyere buffer film)
In the winter greenhouse, ventilation still takes place. When the upper air inlet is opened, the cold air directly enters the greenhouse. The temperature directly below the air outlet changes greatly, and the crop often encounters cold wind. It is necessary to install a windshield below the air inlet. . The method is: Set a piece of film with a length of 1.5 meters and a greenhouse equal to 1 meter below the upwind outlet. Tighten and flatten it with a steel wire to make it high in the south and low in the north, hang it on the steel pipe in the south, and fix it on the column in the north. The film winter can be wind and summer can be rain, at the same time, the drip on the membrane can flow directly to the walkway, not only preventing cold damage, but also avoiding the water droplets falling on the plants, resulting in the occurrence of disease, killing more.
Three off, front edge cold film
In winter production, the crops on the front of greenhouses have poor growth potential and are prone to disease. The main reason is that the temperature at the front edge changes greatly and the humidity is high, especially at night. If a piece of mulch film (new) is set on the front edge, the upper side is fixed to the steel wire and the lower side is draped to the ground, which can prevent the low temperature damage from the shed film, and can block the cold fog in front. The effect is obvious.
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