The invention relates to the technical field of
soil remediation, and discloses an environment-friendly soil improvement remediation agent and a preparation method thereof. The
fertilizer is prepared from 30-50 parts of
biochar, 15-25 parts of
humic acid, 2-3 parts of modified attapulgite, 1-1.5 parts of
citric acid grafted
ramie fibers, 5-10 parts of a compound
microbial agent, 8-15 parts of an organic slow release
fertilizer, 5-10 parts of
zeolite powder, 3-8 parts of a
plant source chelating agent and 2-5 parts of a pH
regulator. The preparation process comprises the steps of
raw material pretreatment, primary mixing, compound mixing,
granulation drying and the like, and stable product performance is ensured by accurately controlling the crushing
granularity, the mixing rotating speed, the
drying temperature and the like. The remediation agent integrates the functions of heavy
metal passivation, salt and alkali
neutralization, soil loosening and
nutrient supplement, the preparation process is green and free of
pollution, the remediation effect is lasting, secondary
pollution is avoided, the physical and chemical properties of soil can be effectively improved, the
soil fertility is improved, and agricultural
sustainable development and
ecological environment improvement are promoted.