Characteristics of black and white film of edible fungi in vegetable greenhouses

The regulation of edible fungi on the natural environment of growth and development is relatively high. Working temperature is a key factor to harm the emergence of edible fungi. Within a certain temperature range, the metabolic activities and growth, development and breeding of edible fungi will be accelerated with the increase of temperature. When the temperature rises to a certain extent, it will just start to cause negative effects. Edible fungi black and white film greenhouse construction regulations: winter temperature, heat insulation is easy to use, low temperature above 8℃; In summer, the effect of blocking light and reducing temperature is remarkable, and the high temperature is maintained below 30℃; According to the countermeasures such as shading and natural ventilation, the daily temperature difference in the greenhouse is maintained below 10℃ except in winter.

Edible fungi are rich in nutrition, delicious, can be compared with meat, eggs, milk, and have the effect of disease prevention, often called health care products, nutritional food. Edible mushroom cultivation is a new global industry. The cultivation of edible fungi all over the world has gained a rapid development trend. At this stage, some edible fungi greenhouses use edible fungi black and white film to carry out shading and temperature reduction. Edible fungus black and white film is a special covering raw material for facilities vegetables. The two sides of the black and white film are black and white, and the white is oriented outward to reflect natural light, while the gray and black are oriented inward to provide heat insulation and insulation in the other night of shading and temperature reduction. Black and white film can also be used for sericulture greenhouse, breeding house, breeding house, potted flowers shading and temperature reduction raw materials.

The black and white film is made of opalescent PET film with high density (thickness 0.025~ 0.mm can be selected), which is coated on one side with gray-black nanomaterial grade coating, the coating frequency is generally 8~12 times, and the thickness is >0.002mm. Depends on the relative density of architectural coatings. After milky PET is coated with gray black, the coating side becomes gray black, and the other side without coating is still milky white, so it is called black and white film.

It is proposed that the imported PO agricultural mulch should be immediately covered on the planting bed or the surface of the planted crops, and the agricultural mulch should be retrieved after the temperature drops sharply, and stored for reuse. This kind of coverage is classified as temporary coverage, the time is short, and the damage to agricultural mulch is small. Black and white film applied in autumn and spring, can heat insulation for crops, wind and rain. Do a small arch shed first, and then do agricultural mulch: the plastic film is used for a small arch shed first, and then the mulch is applied after it falls down, which can be used for the planting of early maturing crops in spring. The bamboo or tree technique used to make the arch shed should be smooth and without beveling to prevent cutting the plastic film. One cover, multiple stubble: spring crops cover imported PO film, maintain detailed after summer harvest, apply again in autumn, or autumn cover winter application. Such as spring luffa, long beans covered with agricultural mulch, autumn can be used to plant cabbage, cabbage and so on. In that way, the same imported PO film can be applied in both autumn and spring seasons, which can improve the accumulated temperature and reduce the project investment. Old film cover new film, double film cover: after planting crops in early spring, the new film is covered on the plot surface, and then the old PO film is made into a small arch shed outside the new film; Or after the transplantation of crop seedlings, use the new film to break the hole as agricultural mulch film, and make a small arch shed outside to set the old film, which can improve the environmental humidity of the soil layer, promote the seed germination and the growth and development of the seedlings, so that the old film can be used twice, and the new film can be applied again.