GB/T 43419.3-2023

This standard specifies technical requirements for applying physiological barrier materials, such as foliar inhibitors or soil amendments, to reduce the uptake and translocation of heavy metals (e.g., cadmium, arsenic) in rice plants. It is applied in agricultural management for paddy fields contaminated by heavy metals, particularly in regions of China where rice cultivation occurs on polluted soils. The standard guides farmers and remediation practitioners in implementing targeted measures during the growing season to ensure harvested rice meets food safety limits.