This invention discloses a method and microbial preparation for controlling mercury accumulation in rice grains using
Metarhizium anisopliae
colonization, belonging to the field of agricultural environment and
microbiology technology. The method involves inoculating
rice plants with
Metarhizium anisopliae spores, followed by planting the rice in mercury-contaminated paddy fields; water management is implemented throughout the rice's
growth cycle until harvest. This invention establishes a complete microbial remediation
system for
mercury contamination in paddy fields, providing not only a method for the
colonization and application of
Metarhizium anisopliae in mercury-contaminated environments, but also ensuring safe rice production, offering a feasible approach to
safeguarding food security and
human health.