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Results of saline-alkali soil improvement experiment.
| No. of scheme |
||||||
|---|---|---|---|---|---|---|
| Depth of soil sample | A | B | C | D | E | F |
| 0 | 9 | 9.1 | 9 | 9 | 9 | 8.9 |
| 10 | 8.5 | 8.5 | 8.6 | 8.5 | 8.5 | 8.5 |
| 20 | 8.3 | 8.2 | 8.2 | 8.2 | 8.3 | 8.1 |
| 30 | 8.1 | 8.1 | 8.2 | 8.1 | 8.1 | 8 |
| 40 | 7.6 | 7.5 | 7.6 | 7.6 | 7.5 | 7.4 |
| 50 | 7.4 | 7.3 | 7.5 | 7.4 | 7.4 | 7.2 |
| 70 | 7.1 | 7.1 | 7.3 | 7.1 | 7 | 7.1 |
| 100 | 7.1 | 7 | 7.2 | 7.1 | 7.1 | 7 |
