As the weather turns cold, the light intensity weakens and most of the vegetable farmers are prepared to change membranes. However, many vegetable farmers in the replacement of the film some improper practices, reducing the life of the film, planting greenhouses hidden dangers.
First of all, when installing the east-west squeeze film wire at the upper and lower air outlets of the film, some vegetable farmers directly press the steel wire on the shed film at the gable. When the tight wire machine is used to squeeze the film wire, it is easy to cover the gable. The film was broken. It is recommended that vegetable growers can use scrap tires or bad soles on the bottom of the gables at the outer edges of the gables to expand the stress area of ​​the steel wire laminations, thereby avoiding the lamination of the shed film by the laminating steel wire to prevent the leakage of the shed film and damage to the gables. The soil causes flushing.
Secondly, the film rope is pressed directly on the front face of the greenhouse. When the vegetable farmer pulls the straw curtain or the wind, it will cause the film rope to oscillate. It is easy to wear out the film and only the shed film can breathe, reducing the film thickness. The insulation performance, when it encounters rain, the rainwater enters the shed from the breach and drops on the vegetables, which has an adverse effect on the growth of the vegetables. Therefore, vegetable growers must avoid the use of film ropes to break the film, and vegetable growers can use rags, rubber hoses, PVC pipes, etc. in the shed at the transition between the shed and the front face to avoid contact between the film rope and the shed film. The wear of the shed film ensures the insulation performance of the shed film.
Once again, after the shed film is covered, we must timely cover the waste straw curtains on the shed membranes on the two sill walls and press them well with bricks before we can walk to prevent the vegetable sheds from smashing the shed film when coming and going, and at the same time preventing rain and snow. Days slipped.
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