Mechanical mulching-film cultivation method for sorghum

The invention belongs to the technical field of mechanical agricultural planting, and discloses a mechanical mulching-film cultivation method for sorghum. The mechanical mulching-film cultivation method for the sorghum comprises the specific steps that a mass of land is selected; land preparation before seeding is conducted, wherein the variety and quality of sorghum seeds are selected; the selected sorghum seeds are treated and sowed, and fertilization and chemical weeding are conducted; intertillage, hilling and fertilization are conducted by using an intertillage, hilling and fertilization integrated machine in the elongation stage; intertillage is conducted in wide lines through wide-narrow line planting; irrigation and drainage are conducted; pest and disease control is conducted; after grains completely ripen and leaves die back, when the water content of the grains is reduced to about 20%, mechanical harvesting is conducted by using a sorghum grain harvesting machine; when there is no special sorghum g