Second, the paper repair method, the agricultural film is slightly damaged, and the paper piece is dipped in water and pasted on the damaged place while wet, which can generally be used for about 10 days.

Third, paste supplement method, use white flour and water to make paste, and then add red enamel equivalent to 1/3 of the weight of dry flour, and it can be used to replenish the film after a little heating. The film after shedding should be repaired. If a thicker film is broken, it can be covered with a film of the same texture and connected with a thin thread.

Fourth, the hot repair method, wash the damaged place, cover the hole with a slightly larger film, and then cover 2-3 layers of newspaper, gently iron along the interface with an electric iron, the two films will be heated and kept, and they will stick together after cooling.

Fifth, glue repair method, wash the holes around the hole, use a brush dipped in special glue to apply, after 3-5 minutes, take a film with the same texture and paste it on it, and the glue can be firmly attached after drying. The hot repair method and the glue repair method have good film repair effect, but the sewing repair method not only leaks, but also is easy to pull open, and is not used for films with a thick texture.