Three kinds of greenhouse covering materials help my countrys new facility agriculture development

Which of the three covering materials on the top of the greenhouse will have more development trends in the future? We all know that at present, the proportion of facility agriculture in the cultivation of vegetables, flowers and fruits in our country is increasing. The promotion and upgrading of facility greenhouses will inevitably become the future development trend, because many facilities in our country have developed countries as reference standards. Today we take the top cover material of the multi-span greenhouse as an example. The top cover material mainly includes glass, sunlight board, and film.

1. Greenhouse glass

Glass is a kind of transparent material made from ore raw materials with stable chemical properties and high light transmittance as a covering material. The advantage of glass is that the service life is more than ten years, and the light transmittance is more than 91%. The disadvantage is that it is heavy. The weight of one square meter is 12.5kg. In fact, the performance of heat preservation and heat insulation is poor, especially in the northern area in winter on the top of the glass is easy to form dew drops. The price of 5mm single-layer tempered glass is about 30 yuan, and the price of chemically treated high-transmitting diffuse reflection glass is about 45 yuan per square meter.

Second, the sun board

Sunshine board is a product made of transparent plastic, which generally adopts a double-layer hollow structure with two thicknesses of 8mm and 10mm. The advantages of the sun board are good heat preservation and heat insulation, light weight, a square meter weighs 1.5kg, and its internal surface is not easy to form dew drops. The disadvantage is that the sunshine board has a service life, and the service life designed by the general manufacturer is 10 years. Long-term use also has the problem of decreased light transmittance. The price of domestic solar panels is about 35 yuan per square meter, and the price of imported panels is about 45 yuan per square meter.

Three, film

Film is one of the most economical covering materials in agricultural production, and it is also a plastic product. The cost of film products is one-tenth that of glass and solar panels, but with the advancement of film technology, the service life of the film with a thickness of 15 filaments is up to five years, and its cost performance is very high. At the same time, the film is divided into 4 filaments, 8 filaments, 10 filaments, and 12 filaments according to the thickness. There are po and pe in the types of films.

Different greenhouse structures have different styles, and the materials that can be selected are also different. At the same time, the choice of covering materials should be selected according to the crops grown inside the greenhouse. The design and construction of the greenhouse is a complicated project. I hope everyone can build a more practical greenhouse.