▎ 摘　　要

NOVELTY - Soil improvement material comprises 60-70 pts. wt. waste ammonia adsorbent, 10-20 pts. wt. plant gum, 0-20 pts. wt. biochar and 3-10 pts. wt. adhesive, where the waste ammonia adsorbent is a waste adsorbent produced by industrial ammonia adsorption treatment, and the adsorption matrix comprises activated carbon, molecular sieve, zeolite, silica gel and/or graphene oxide. USE - The soil improvement material is used for improving the acidic soil in copper mines. ADVANTAGE - The soil improvement material utilizes the waste ammonia adsorbent in industrial production to improve the acidic soil in copper mines, and solves the problems of land occupation and environmental pollution caused by the waste adsorbent disposal, where through the coating effect of the plant glue, the soil improvement material has good slow-release performance and improves the survival rate of plants. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of the soil improvement material involving when the adsorption matrix of the waste ammonia adsorbent contains activated carbon, mixing the plant glue and the adhesive to form a colloidal solution and covering the waste ammonia adsorbent to obtain the soil improvement materials; or when the adsorption matrix of the waste ammonia adsorbent does not contain activated carbon, mixing the plant glue and the adhesive to form a colloidal solution, mixing the waste ammonia adsorbent with the biochar, granulating repeatedly and covering with a film to obtain the soil improvement material.