Juncao pulp for spinning and preparation method and use thereof

A method for preparing a Juncao pulp for spinning, comprising:

• placing a Juncao raw material in a solution prepared from a lye, a catalyst, and an auxiliary agent and cooking to obtain a cooked mixture;
• and
• then subjecting the cooked mixture to pulping to obtain the Juncao pulp for spinning;
• wherein the catalyst is a metal chloride salt, and the auxiliary agent is a polyether water-soluble organic matter and a bicarbonate;
• the metal chloride salt is at least one selected from the group consisting of cobalt chloride, calcium chloride, ferric chloride, ferrous chloride, and nickel chloride;
• the polyether water-soluble organic matter is polyethylene oxide;
• the Juncao raw material is calculated based on a dry Juncao;
• the polyether water-soluble organic matter is calculated based on an active ingredient;
• an additive amount of the catalyst is in a range of 0.01 wt % to 0.3 wt % of the Juncao raw material;
• an additive amount of the bicarbonate is in a range of 0.01 wt % to 0.1 wt % of the Juncao raw material;
• and a volume/mass ratio of the polyether water-soluble organic matter to the Juncao raw material is in a range of (1-12)/(2-3) mL/kg.