Large-scale field trials by Chinese scholars to evaluate the safe use of cadmium-contaminated farmland

The prevention and control of heavy metal pollution in farmland soils in China brooks no delay

Recently, in response to questions such as which strategies and technical models are applicable to cadmium-contaminated farmland in northern areas, which candidate technologies are scalable, and what are the technical standards that can be promoted, the theory and experiments of Li Xiaofang, a researcher at the Agricultural Resources Research Center of the Chinese Academy of Sciences, in the past few years On the basis of laboratory technology research, large-scale field experiments and technology promotion were carried out in a typical sewage irrigation area in the northern plains.

According to reports, due to the non-degradability of heavy metals, there are only two options for pollution control strategies, passivation or transfer

"First of all, farmland pollution is mostly light pollution, and heavy pollution is often included in the scope of site pollution control

"In short, the prevention and control of heavy metal pollution in farmland needs to strictly rely on top-level design, rather than a problem that can be solved by a single technology research and development

The experiment was carried out in a historical sewage irrigation area in northern China

Through experiments, researchers found that there are significant differences in the accumulation capacity of heavy metal cadmium (Cd) between wheat varieties.

The research was funded by the National Key Research and Development Program and Hebei Outstanding Youth Fund

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