The use of a membrane multi-purpose technology to increase the number of agricultural membranes used can reduce production costs and increase economic efficiency. Once covered, more than one species. The spring crops are covered with plastic film, and they remain intact during the summer harvest and continue to be used in autumn. Or cover in autumn and reuse in winter. After sowing of the crop, the dirt on the mulching film is removed, wet holes are used to block the holes, or a new film that is 2-3 times larger than the holes is soaked and covered. It is best to sow or plant in the original planting hole. For example, a mulch film covering cultivated cucumbers and green beans can be used in spring to grow white flowers, cabbage, and the like. First use a small shed film, then make a film. Applicable to early spring crops. For example, early corn, first take a small arch shed after transplanting, the temperature rises after falling film, broken holes for the use of film. Film cover, more use. In the spring, the mulching film covers the surface of the crop or the surface of the crop. After the temperature rises, the mulching film is stored. It is required that the noodles be finely chopped and smooth and free of debris, and that the covering be tight after four weeks. Film cover is short and damage is small. It is mainly used for heat preservation, wind protection and rain protection. Old film cover new, double film coverage. After the early spring crop is sown, the new membrane is placed on the surface of the lotus root, and then the old membrane is placed over the new membrane with a small arch. This will not only help improve the soil temperature, promote seed germination and seedling growth, but also protect the new membrane so that the new membrane can continue to be used. Gully cover, multiple use. On a sorghum 15-20 cm high and 60-70 cm wide, open two grooves 15-20 cm wide and 20 cm deep. Sowing or planting in the ditch, the film is covered flatly on the surface of the seedlings. When the seedlings come into contact with the film, the film is taken back for storage and used next time. With the increase of time and frequency of use, the light transmission and heat insulation of the film will be reduced. Therefore, it is generally used 2-3 times to replace the new membrane.