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Treatments of different concentrations of EFX and Cu (mmol per kg dry soil) in soils.
| Series | Treatments | EFX | Concentration (mmol/kg) | Cu2+ | Concentration (mmol/kg) | Mol Ratio (EFX: Cu2+) |
|---|---|---|---|---|---|---|
| Series 1 | CK | − | 0 | − | 0 | − |
| EFX0.05 | + | 0.05 | − | 0 | − | |
| EFX0.20 | + | 0.20 | − | 0 | − | |
| EFX0.80 | + | 0.80 | − | 0 | − | |
| Series 2 | Cu | − | 0 | + | 1.6 | − |
| EFX0.05_Cu | + | 0.05 | + | 1.6 | 1:32 | |
| EFX0.20_Cu | + | 0.20 | + | 1.6 | 1:8 | |
| EFX0.80_Cu | + | 0.80 | + | 1.6 | 1:2 |
