Try this method in the winter greenhouse
In the winter, when you open the door and close the door, the vegetables at the door are the most vulnerable to the weak and cold. A film with a length of 2 times the height of the door and a width of 1.5 meters is hung in the south side of the walkway, and the lower side is pressed tightly (for a thick-walled greenhouse, the film can be placed on the side of the room, a thick curtain is recommended), which is effective. Relieve the cold wind at the doorway, so that the cold wind entering the greenhouse is buffered to minimize the damage to the crop. As shown on the right: Second, the upper air outlet plus windshield In the winter greenhouse, the greenhouse should still be ventilated. When the upper vent is opened, the cold air directly enters the shed. The temperature below the vent is greatly changed. It is necessary to set a windshield under the upper vent. The method is: set a film with the length of the greenhouse and a width of 1.5 meters at a distance of 1 meter below the upper air outlet, and tighten it with a steel wire to flatten it to a south high and a low north state. The south side is hung on the steel pipe, and the north side is fixed on the vertical column. . The film can keep out the wind in summer and prevent rain. At the same time, the dripping water on the air film can directly flow to the aisle, which prevents cold damage and prevents the water from falling on the plant. Third, the front edge plus cold film The difference in crop growth at the front of the greenhouse in winter is mainly due to the large temperature changes and high humidity, especially at night. If a mulch (new) is placed on the front edge of the shed, the upper side is fixed to the steel wire, and the lower side is hanged to the ground, which can prevent the low temperature damage from being near the shed film, and can block the cold fog in front, and the effect is obvious. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Blackout greenhouse ,Light dep greenhouse ,Auto light deprivation greenhouse,Blackout green house,film greenhouse JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.engreenhouse.com