Fecha de publicación: 23/08/2022 Fuente: WIPO "hemp" The invention belongs to the technical field of agricultural application, and discloses a whole flax straw biological matrix paper mulching film, a cow dung-based paper mulching film and a preparation method thereof.The flax straw with the hemp fiber content being 40% serves as a raw material, and the flax straw with the hemp fiber content being 40% is pretreated; pulping the pretreated flax straws by using a Valley pulping machine, and determining the pulping degree of the flax straws by using a pulping degree determinator; quantifying the pulped flax straws according to absolute dry pulp, performing fiber defibering on the absolute dry pulp in a standard defibering device, and performing papermaking to obtain a paper mulching film sample. The all-flax straw biological matrix paper mulching film with better mechanical property is manufactured by taking cheap agricultural and pastoral waste flax straw as a raw material, the process is simple, the operation is simple and convenient, and the all-flax straw biological matrix paper mulching film has the advantages of low cost, strong repeatability, high yield, large yield, degradability, no pollution, good air permeability, easiness in pilot scale production and the like.