Full-biodegradable agricultural mulching film

The invention discloses a full-biodegradable agricultural mulching film, and relates to the technical field of agricultural mulching films. The wood chips and the cotton fibers are subjected to pulping treatment, the wood chips are swelled and broomed, and hydrogen bonds exposed on the surfaces of the cotton fibers are increased along with the pulping degree, so that the binding force between the wood chips and the cotton fibers is enhanced, and the mechanical property of a matrix is enhanced; the chance of cross-linking of sodium carboxymethyl cellulose molecules is increased, so that the molecular weight of the system is increased, and a small amount of lignin in the wood chips can be filled into gaps of a cellulose membrane to improve the rigidity of a matrix, so that the matrix is tightly connected with reinforcement fibers, the number of hydroxyl groups in the matrix is reduced, the water resistance is improved, and the mechanical property is enhanced; and the full biodegradability of the mulching film i