The invention provides a remediation method for soil in a semi-
arid region, and belongs to the technical field of
soil remediation. According to the remediation method for the soil in the semi-
arid region, the
physical structure of the soil is optimized through deep ploughing and rainwater collection, a
straw matrix, the chemical environment is regulated and controlled through a composite conditioner, the biological function is enhanced through mixed
sowing of local pioneer plants and a composite
microbial agent, and a multi-dimensional synergistic remediation
system is formed; local pioneer plants are selected, so that the invasion risk of
alien species is avoided; natural materials such as degradable
starch mulching film, decomposed
straw and
organic fertilizer are adopted and matched with the compound
microbial agent, no
chemical residue exists, local microbial
community optimization can be promoted, and the stability of a soil ecological
system can be improved;
straw, cattle and sheep
manure and other agricultural wastes are used for preparing a matrix and an
organic fertilizer, and the
raw material cost is reduced; the design of the rainwater collecting ditches is combined with natural rainwater resources, the manual
irrigation cost is reduced, the soil
ecosystem can be autonomously kept stable after remediation is completed, and secondary degradation is effectively avoided.