Use the silver-black porous film with the black side down and the silver side up, which offers moisture retention, root protection, and weed control. The silver-black film, due to its high reflectivity, also repels aphids, reduces virus transmission, and lowers the incidence of crop diseases. The main function of the micropores is to allow water and air permeation, regulate low temperatures and humidity, while also serving other functions of weed control films.