Dripping water in the greenhouse is a problem that vegetable farmers often encounter in winter. Sometimes the vegetable grower's greenhouse is like a light rain. If dripped onto plants, it will cause a variety of diseases, because many pathogenic bacteria need liquid water and wounds to invade. Dripping water from the greenhouse film creates conditions for the occurrence of diseases.
In addition, condensation and dripping of water in the shed increase the humidity in the shed, which is conducive to the occurrence of most moisture-loving diseases. Especially in the continuous cloudy weather, the temperature in the shed is low, the humidity is high, and the disease is serious. The condensation of the shed film reduces the light transmittance of the shed film by 20% to 30%, and a large amount of heat in the shed is absorbed, which affects the temperature increase in the shed.
The angle of the shed surface The angle of the shed film is small, which affects the fluidity of the water droplets on the film, so that the water droplets do not flow down the film but drop directly.
External factors such as premature application of the film and improper use of the shed cover will cause poor dripping of the shed film. If the shed film is replaced prematurely, the high temperature generated in the shed and the frame of the shed will accelerate the dissipation of the anti-fogging and dripping agent added in the shed film, greatly shortening the anti-fogging and dripping period of the shed film.
Improper management. The whole shed is covered with mulch plus more watering. The evaporated water in the shed always circulates in the space between the shed film and the mulch. As the water evaporates, there will be more and more water in this space and dripping more and more. serious.
So, how can we solve the problem of dripping water from vegetable greenhouses in winter?
Use non-drip film
When some farmers are building large sheds, the quality of the shed film is not good or the old film used is prone to dripping problems. If a drip-free film is used, this situation will be greatly reduced. Therefore, it is recommended that vegetable farmers choose high-quality non-drip film. Although the one-time investment on the film increases, there is less dripping, lower humidity, less disease, less spraying, high vegetable yield, good quality, and higher income.
Spray silicone
Silicone is a kind of spreading agent, and the water on the canopy film will slide down after encountering it, and will not condense into water droplets, so that there is no raindrop. In specific applications, one bucket of water can be poured into two bags of silicone. When the weather is fine, the shed film is slightly dry, and the mixed solution is sprayed on. This effect is better, convenient and cost-saving.
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