Different foliar barrier agents (FBA) were used by foliar spraying in first season field and pot experiments to compare their effects on Cadmium (Cd) reduction in wheat grains. The best two FBA (50 µM SNP and 2 mM Na₂EDTA) can significantly reduce Cd concentration in wheat grains, and the filling period was the most effective period for FBA application. Compared with the control (H₂O), foliar spraying 50 µM SNP or 2 mM Na₂EDTA inhibited the moving of Cd from the lower tissue to upper tissue in stem and also significantly reduced the Cd accumulation in grains. Furthermore, compared with normal wheat variety (AK58), foliar spraying 50 µmol SNP or 2 mM Na₂EDTA as the best two FBA significantly reduced Cd concentration in shoots of Cd low accumulation varieties (HZB and HJBY), which can be used for the safe production of wheat in Cd-contaminated farmlands.

在第一季大田和盆栽试验中，通过叶面喷施不同的叶面阻隔剂（FBA）来比较它们对小麦籽粒中镉（Cd）降低的影响。最佳的两种FBA（50 µM SNP和2 mM Na ₂ EDTA）可以显着降低小麦籽粒中Cd浓度，灌浆期是FBA施用最有效的时期。与对照（H ₂ O）相比，叶面喷施50 µM SNP或2 mM Na ₂ EDTA抑制了Cd从茎部下部组织向上部组织的移动，并显着减少了Cd在籽粒中的积累。此外，与普通小麦品种（AK58）相比，叶面喷施 50 µmol SNP 或 2 mM Na ₂EDTA作为最佳的两种FBA显着降低了Cd低积累品种（HZB和HJBY）地上部Cd浓度，可用于Cd污染农田小麦的安全生产。