The accumulation of Cd and Pb in rice grains poses a potential threat to human health, which is a subject of increasing concern across the globe. We examined the effect that foliar spraying of Zn-ethylenediaminetetraacetate (Zn-EDTA) (0.3% and 0.5% w/v) during the early-grain filling stage has on rice grain yield and Cd, Pb, Zn and Fe contents in rice tissues via a field experiment. The grain yield significantly decreased with the foliar application of 0.5% Zn-EDTA. In rice grain, foliar spraying of 0.5% Zn-EDTA significantly decreased the Cd and Pb contents, but increased the Zn and Fe contents. The main reasons for the decrease in the Cd and Pb content in grain were the inhibition of Cd and Pb by roots and the increased Fe content in grain via Zn-EDTA application. The foliar spraying of Zn-EDTA decreased the grain yield and Cd and Pb contents, while increased the Zn and Fe contents in grains.

稻谷中Cd和Pb的积累对人类健康构成潜在威胁，这是全球范围内日益关注的一个问题。我们研究了早粒灌浆期叶面喷洒0.3％和0.5％w / v的Zn-EDTA（Zn-EDTA）对水稻籽粒产量以及水稻组织中Cd，Pb，Zn和Fe含量的影响通过现场实验。叶面施用0.5％Zn-EDTA时，籽粒产量显着下降。在水稻籽粒中，叶面喷洒0.5％Zn-EDTA显着降低了Cd和Pb的含量，但增加了Zn和Fe的含量。降低谷物中Cd和Pb含量的主要原因是根部对Cd和Pb的抑制作用以及通过Zn-EDTA施用增加了谷物中Fe的含量。叶面喷施Zn-EDTA降低了籽粒产量以及Cd和Pb含量，