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| samples | Al (wt %) | total K (mg/kg) | water-soluble K (wt %) | NH4Ac-soluble K (wt %) | HCl-soluble K (wt %) | insoluble K (wt %) |
|---|---|---|---|---|---|---|
| CS | 0.001 | 16531.22 | 84.61 | 5.22 | 3.21 | 6.96 |
| XL | 0.171 | 370.26 | 5.27 | 21.73 | 67.84 | 5.16 |
| DL | 0.165 | 41.31 | 8.41 | 35.16 | 30.46 | 25.97 |
