In the winter, the vegetables in the front of the greenhouse are often characterized by poor growth and development, and the author has adopted the "one, one, one, and one ditch" insulation measures in front of the greenhouse to better solve this problem.
“A glimpse†means that before the shed in the afternoon, it is covered with a grass hoe and covered on the film in front of the shed, and then placed in the shed. In this way, the front face of the shed is equivalent to an additional layer of insulation material, which can effectively reduce the heat loss at night, thereby increasing the temperature of the place. After pulling the shed in the morning, don't rush to remove the grass covered on the film in front of the shed. Because the early withdrawal will cause the temperature to continue to cool down, it is recommended that you wait an hour after pulling the shed, the temperature gradually rises, and then the one is removed. It is not too late.
"One membrane" means that a two-film is placed on the inside of the front face of the greenhouse with a white mulch and a distance of about 20 cm from the shed film. The effect is also to strengthen the insulation at this place and reduce heat loss. In addition, in addition to the heat preservation effect, the two membranes can block the moisture, prevent the water droplets dripping from the membrane film from evaporating into the shed again, reduce the humidity in the shed, and control the diseases such as gray mold and downy mildew. Have a positive effect.
"One ditch" means setting a cold ditch outside the shed. The specific method is to dig a deep groove of 35 cm wide and 50 cm deep at a distance of 30 cm from the outside of the front face of the greenhouse. In the ditch, three layers of corn stalks are filled in three layers, each filling one layer and covering the soil. . By digging the cold-proof ditch, it can effectively block the heat exchange at the front face of the greenhouse, thus maintaining the effect of heat preservation.
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