| 温室大棚如何应对大风天气 |
| 添加时间:2017/10/24 17:16:12 浏览次数: |
近日,多处遭遇了大风强对流天气,遇到大风降温天气及降温幅度达10℃以上时,本人根据施工经验及温室使用者反应,总结以下防范措施:
In recent years, many places have encountered strong winds and severe convective weather. When encountering gale, cooling weather and cooling range of over 10 degrees, according to the construction experience and the response of greenhouse users, the following preventive measures are summarized:
1-压实覆盖物。
1- compacted mulch.
检查大棚设施。多层覆盖确保大棚保温性能,并压紧棚膜。前提是依据风向而定,如遇西风只需将浮膜西侧压好即可,东侧不压,这样即使有少量风吹入浮膜底部形成气包,气包中的空气也会很快被赶出,使浮膜紧贴在保温被上,以免大风吹起浮膜,吹翻保温被;当遇到偏东风,东风时则采取相反的压膜方式。
Inspection of greenhouse facilities. To ensure that the greenhouse multi-layer insulation performance, and compact films. The premise is based on the direction of the wind, such as the case of westerly just floating film on the west side to side pressure, no pressure, so that even if there is a small amount of bottom blown into floating film forming air bag, air bag will soon be driven out of the floating mask tightly on insulation, lest the wind blows floating film. Blown insulation is; when the East, have taken the opposite way to the East film.
2-两侧添加防风膜。
Add windproof film on both sides of 2-.
对于蔬菜温室大棚的防风,可在拱棚的东西两侧底部各设置一块防风膜,其宽度要从拱棚一侧的地下到最上部的放风口为宜。
For the windbreak of vegetable greenhouse, a windbreak film can be set at the bottom of the East and west sides of the arch shed, and its width should be from the bottom of the arch shed to the uppermost part of the air outlet.
3-设置压膜绳。
3- film pressing rope.
当蔬菜温室大棚边有较高物体时一定要多设置压膜绳,这是经验之谈。如果拱棚附近存在较高的物体,例如房屋、树木等等,大风会因为这些物体的阻挡而形成气旋,尤其是这些物体在拱棚的正南方时,回旋的气流被阻挡后下降,通过棚南侧缝隙较多的进出口进入棚内,就会造成棚内气压不一致,很可能会将大棚膜鼓破,所以遇到此类情况应增加压膜绳的数量,把拱棚出入口封堵严密,以免气流进入。
When there is a high object greenhouse vegetable side must set film rope, this is wise remark of an experienced person. If there is a high arch shed near objects, such as houses, trees and so on, because these objects will wind barrier formed cyclone, especially these objects in the south of the shed, the airflow is blocked after cyclotron decreased by more into the shed shed south of import and export will cause cracks, shed pressure inconsistent. It may be a greenhouse film drum break, so the face of such a situation should increase the number of pressing rope, the arch shed entrance of tight sealing, so as to avoid the airflow into the.
4-在大风到来前,把棚顶和棚前面的覆盖塑料膜的保温被加固牢靠,及时堵住通风口,防止掀开保温被和吹棚。夜晚把保温被压好,必要时,在棚顶及棚脚用其它辅助物,如木棒、砖块等帮助压实、压好。否则,轻者秧苗极易受冻;重者,损毁温棚。
4- before the arrival of the wind, the roof and roof of the front cover plastic film insulation is strengthened firmly, timely blocking vents, to prevent the opening of the insulation quilt and blowing shed. In the night, the insulation is pressed well. If necessary, the roof and shed foot can be compacted and pressed with other auxiliary materials, such as sticks and bricks. Otherwise, light weight, easy to seedling cold greenhouses damaged. |
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