▎ 摘　　要

NOVELTY - Alkaline-alkali soil modifying agent comprises 1-5 pts. wt. zeolite, 1-10 pts. wt. organic fertilizer, 0.1-1 part of fulvic acid, 0.01-0.1 pts. wt. aluminum sulfate, 15-30 pts. wt. traditional Chinese medicine residue biochar-based materials, and 0.001-0.01 part trace additive combination. Trace additive combination comprises 60% sodium alginate oligosaccharide, 30% rhamnolipid, and 10% graphene. USE - Alkaline-alkali soil modifying agent used for reducing soil salt content and soil pH, increasing soil organic matter content, increasing soil particle aggregation, and improving activity of saline-alkali soil microorganisms. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the alkaline-alkali soil modifying agent, which involves a method for preparing the soil conditioner for saline-alkali land, which involves taking the components, mixing the zeolite, organic fertilizer, fulvic acid, aluminum sulfate, traditional Chinese medicine residue biochar-based material, and trace additives to form a mixture, using 0.1 mol/L dilute hydrochloric acid to adjust the pH of the mixture to 6.5 and adding to a disc granulator for disc granulation and drying to obtain the soil conditioner for saline-alkali land.