In spring, windy and dusty weather will have an adverse effect on the production of vegetable greenhouses. It is not well managed, and if the seedlings are frozen, the sheds will be torn, scaffoldings will be torn off, vegetables will be produced, and the income will be delayed in the first quarter.
In the event of a sudden gale and rainy weather, the vegetable grower can quickly lower the floating membrane and avoid the straw curtain being blown or wet by strong winds. When the wind blows, the air outlet is closed to prevent the wind from being blown into the shed from the air outlet to tear the film. Lay the grasshopper and compact the bottom. On the grass that is laid down, press the 8th wire every 1.5 meters in the horizontal direction. The wire should be firmly fixed on the wall. The grasshopper on the shed is like a belt to prevent the wind from scratching the grass. When the wind blows for a long time, when the temperature is high and no ice is formed, the straw can be sprayed with water by using a water pipe. This will increase the weight of the grasshopper. The grasshopper will not be easily damaged by the wind. When the wind stops, the grasshopper will basically dry. .
For the windproof of the arch shelter, the vegetable farmer should install a windproof membrane on each side of the east and west sides of the arch shelter. The width of the windproof membrane should be from the underground side of the arched ceiling to the uppermost air outlet, for example, when the west wind blows, the vegetable grower will be on the west side. The windproof membrane rises, which can prevent the wind from entering the shed from the air outlet on the west side of the shed and prevent the wind from scratching the shed film. If the wind exceeds level 6, the shed must open the air outlet on the leeward side so that the windproof effect is better.
The vegetable grower should pay special attention to the fact that the shed equipped with a roller shutter has a certain ability to resist wind, but its wind resistance is limited. Once the wind is too strong, when the wind blows the straw curtain, it will directly tear the fixed part of the straw curtain. The damage caused by the damage is heavier than that of a greenhouse without rolling shutters. Therefore, the farmers should not completely rely on the shutters for wind protection.
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