Silver-black mulch can also be used as silver-gray mulch. Autumn mulching is used to drive aphids, prevent viruses, and protect moisture, as well as weeding. The light transmittance of the silver black mulch is 15%, and the reflectance is higher than 35%. The reflection contains infrared rays, which can repel aphids. Aphids are the main transmission vector of viral diseases, and pest control can play a role in preventing viral diseases. Its light transmittance is low and it has an inhibitory effect on weeds. Covering is generally tiled. Greenhouse vegetables can be hung silver-gray mulch at the vents to prevent aphids. The silver black mulch film can not only repel aphids and prevent poisons, but also reduce the temperature and weeds when the temperature is high in summer and autumn. One side is silver gray and the other side is black. When laminating, the silver gray side is facing up, and the black side is on the ground. The reflection effect of the silver and black two-sided mask makes the soil drop more obvious. The silver-gray surface has the effect of repelling aphids and preventing poisons, and the black surface can prevent the transmission of sunlight, cooling down and weeding. Because it can reflect more ultraviolet light, the silver-black two-face mask has the effect of inhibiting the growth of vegetables.