How to Increase Greenhouse Film Light Transmittance?
During the use of the film in the greenhouse, due to pollution, water droplets and dust, the light transmission capacity of the period will be greatly reduced. The photosynthesis of the crop will be seriously affected, which is extremely unfavorable for the growth of the crop. Therefore, it is necessary to use a light transmittance tester to detect the light transmittance of the agricultural film. Farmers take measures to increase the light transmittance of shed film, so what should be done? Let's take a look
1. How to improve the transmittance of agricultural film?
In order to improve the light transmittance of the shed film, in addition to designing the lighting angle and promoting the use of non-drip film during the construction, it should be cleaned every other week during use. So the dust and broken grass on the shed film can be cleaned up.
(2) Dry fine soil or gypsum powder
During the cultivation process in the greenhouse, there is no high humidity in the greenhouse. Any water droplets will adhere to the greenhouse film, which will also affect the light transmittance of the greenhouse film. Before laying, you can sprinkle fine soil or gypsum powder on the shed film. Then wipe it with a towel or cloth repeatedly for several times, then wipe it clean. Treat the treated side inward, which can reduce the adhesion of the shed film water droplets.
(3) Spray soybean powder
Drying fine soil or gypsum powder can only be maintained for a period of time, after which there will still be water droplets attached, then you can grind the soybean into a fine powder. Use 7.5-10 grams of soybean powder per square meter of greenhouse film, 150 grams of water, soak After 2 hours, filter with fine gauze, remove the scum, and spray the water droplets on the shed film with a sprayer. In this way, the water droplets can fall quickly and it can be kept for about half a month without forming new water droplets.
(4) Turn over the greenhouse film
You can choose a no-wind, sunny noon, remove the film and turn it over, so that the original upward side is facing down and then fix it. This can also reduce the adhesion of water drops and greatly improve the light transmittance.
2. Dust removal skill
Rinsing with water at high temperature and humidity will cause little damage to the shed film, but if it is washed with water in the low temperature season, it is very easy to freeze and it is difficult to implement. If manual wiping is used, it is inevitable that the shed film will be scratched. And it will make the shed film dirty, resulting in a decrease in light transmission performance. Although these two methods are available. But it takes time and effort. A cloth strip with a film width of 0.5 to 0.7 meters long can be placed on the shed film every 1.2 meters. The two ends are tied to the steel wire, so that the wind can be used to swing the cloth strip to remove dust.
The above is an introduction on how to improve the light transmittance of the agricultural film in the greenhouse. For more related knowledge and light transmittance testers, you can view more details in Linshang official website.
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