Method for the production of fibrous materials, in particular fibrous web mats or fibrous web sheets, comprising a) Providing crop straw, wherein the crop straw has a residual moisture content in the range of 5 to 20% by weight and wherein the proportion of the crop straw is at or above 70% by weight, said proportion by weight of crop straw being calculated on the basis of the total weight of crop straw and of crushed bast plant material containing bast plant fibres and shives, b) Providing at least one binding agent, in particular binding fibre, c) Providing a reduced amount, relative to the amount of crop straw, of crushed bast plant material containing bast plant fibres and shives, wherein the proportion of the crushed bast plant material is in the range from 2 to 20 % by weight by weight, said proportion by weight of the crushed bast plant material being calculated on the basis of the total weight of crop straw and of crushed bast plant material containing bast plant fibres and shives, wherein the crushed bast plant material containing plant fibres and shives mainly comprises plant fibres and/or shives having an average or absolute length in the range of 2 to 15 cm, g) Mixing the crushed bast plant material containing bast plant fibres and shives according to c) with the crop straw according to a) and the at least one binding agent according to b), h) Separating dust and/or foreign particles from the resulting mixture, in particular by means of at least one cyclone separator and/or condenser, j) Discharging the mixture according to g) or h) onto a conveyor belt, forming a fibre blanket, n) optionally adding at least one, in particular particulate, binding agent to the mixture, q) Pressurizing the mixture with water vapour and/or r) Activating the binding agent and, optionally simultaneous or delayed pressurizing of the mixture, s) optionally calendering the mixture obtained according to step q) or r), t) if heat treatment has taken place in step q), r) and/or s), at least partial cooling of the mixture solidified in accordance with step q, r) and/or s) and, optionally, pressurizing, and u) Separating the solidified mixture into fibrous materials, in particular fibrous web mats or fibrous web sheets. a) Providing crop straw, wherein the crop straw has a residual moisture content in the range of 5 to 20% by weight and wherein the proportion of the crop straw is at or above 70% by weight, said proportion by weight of crop straw being calculated on the basis of the total weight of crop straw and of crushed bast plant material containing bast plant fibres and shives, b) Providing at least one binding agent, in particular binding fibre, c) Providing a reduced amount, relative to the amount of crop straw, of crushed bast plant material containing bast plant fibres and shives, wherein the proportion of the crushed bast plant material is in the range from 2 to 20 % by weight by weight, said proportion by weight of the crushed bast plant material being calculated on the basis of the total weight of crop straw and of crushed bast plant material containing bast plant fibres and shives, wherein the crushed bast plant material containing plant fibres and shives mainly comprises plant fibres and/or shives having an average or absolute length in the range of 2 to 15 cm, wherein the proportion of the crushed bast plant material is in the range from 2 to 20 % by weight by weight, said proportion by weight of the crushed bast plant material being calculated on the basis of the total weight of crop straw and of crushed bast plant material containing bast plant fibres and shives, wherein the crushed bast plant material containing plant fibres and shives mainly comprises plant fibres and/or shives having an average or absolute length in the range of 2 to 15 cm, g) Mixing the crushed bast plant material containing bast plant fibres and shives according to c) with the crop straw according to a) and the at least one binding agent according to b), h) Separating dust and/or foreign particles from the resulting mixture, in particular by means of at least one cyclone separator and/or condenser, j) Discharging the mixture according to g) or h) onto a conveyor belt, forming a fibre blanket, n) optionally adding at least one, in particular particulate, binding agent to the mixture, q) Pressurizing the mixture with water vapour and/or r) Activating the binding agent and, optionally simultaneous or delayed pressurizing of the mixture, s) optionally calendering the mixture obtained according to step q) or r), t) if heat treatment has taken place in step q), r) and/or s), at least partial cooling of the mixture solidified in accordance with step q, r) and/or s) and, optionally, pressurizing, and u) Separating the solidified mixture into fibrous materials, in particular fibrous web mats or fibrous web sheets.