Open Access
Table 1.
Statistical indicators of grey forests heavy loam arable soils, %
| Horizon | n | max | min | M | σ | ±m | V, % | P, % |
|---|---|---|---|---|---|---|---|---|
| Humus, % | ||||||||
| P | 99 | 6.2 | 2.8 | 4.0 | 0.76 | 0.08 | 19.1 | 1.9 |
| AEL | 29 | 3.7 | 1.1 | 2.2 | 0.77 | 0.14 | 34.8 | 6.5 |
| BEL | 40 | 3.8 | 1.0 | 2.3 | 0.79 | 0.12 | 35.8 | 5.7 |
| BT1 | 86 | 2.5 | 0.1 | 0.8 | 0.32 | 0.03 | 37.5 | 4.0 |
| BT2 | 28 | 1.1 | 0.3 | 0.6 | 0.18 | 0.03 | 30.4 | 5.7 |
| The content of physical clay particles (<0.01 mm), % | ||||||||
| P | 90 | 50.6 | 37.7 | 44.3 | 3.33 | 0.35 | 7.5 | 0.8 |
| AEL | 33 | 62.8 | 38.1 | 46.7 | 6.12 | 1.07 | 13.1 | 2.3 |
| BEL | 33 | 60.6 | 36.8 | 47.1 | 6.90 | 1.20 | 14.6 | 2.5 |
| BT1 | 86 | 70.5 | 37.6 | 51.3 | 6.96 | 0.75 | 13.6 | 1.5 |
| BT2 | 62 | 69.6 | 39.2 | 54.2 | 6.03 | 0.77 | 11.1 | 1.4 |
| BC | 32 | 75.0 | 24.6 | 51.2 | 10.02 | 1.77 | 19.5 | 3.4 |
| C | 57 | 75.0 | 24.6 | 51.2 | 10.20 | 1.35 | 19.5 | 2.6 |
| Content of silt particles (<0.001 mm), % | ||||||||
| P | 90 | 25.9 | 11.8 | 19.0 | 3.38 | 0.36 | 17.8 | 1.8 |
| AEL | 33 | 37.2 | 15.7 | 23.5 | 6.20 | 1.08 | 26.4 | 4.6 |
| BEL | 33 | 38.9 | 9.9 | 21.5 | 7.30 | 1.27 | 34.0 | 5.9 |
| BT1 | 86 | 46.6 | 10.6 | 31.2 | 7.68 | 0.83 | 24.6 | 2.6 |
| BT2 | 62 | 45.6 | 20.2 | 35.4 | 5.96 | 0.76 | 16.8 | 2.4 |
| BC | 32 | 41.3 | 20.0 | 34.7 | 5.62 | 0.99 | 16.2 | 2.9 |
| C | 57 | 44.6 | 17.6 | 31.5 | 6.77 | 0.90 | 21.5 | 2.8 |
| Amount of absorbed bases, mmol/100 g of soil | ||||||||
| P | 91 | 39.2 | 17.7 | 25.4 | 4.80 | 0.50 | 7.4 | 0.8 |
| AEL | 28 | 35.1 | 14.9 | 22.6 | 4.20 | 0.79 | 18.6 | 3.5 |
| BEL | 39 | 41.8 | 16.8 | 25.1 | 6.40 | 1.03 | 25.6 | 4.1 |
| BT1 | 83 | 36.7 | 15.8 | 25.2 | 4.70 | 0.52 | 18.7 | 2.0 |
| BT2 | 34 | 38.5 | 17.0 | 26.8 | 4.10 | 0.70 | 15.3 | 2.6 |
| Hydrolytic acidity, mmol/100 g of soil | ||||||||
| P | 66 | 8.1 | 0.7 | 3.4 | 1.58 | 0.20 | 46.5 | 5.7 |
| AEL | 17 | 7.9 | 1.0 | 3.2 | 1.70 | 0.41 | 53.3 | 12.9 |
| BEL | 21 | 4.2 | 0.5 | 2.3 | 1.07 | 0.23 | 46.8 | 10.2 |
| BT1 | 40 | 4.3 | 0.7 | 2.4 | 0.94 | 0.15 | 39.7 | 6.3 |
| pH of salt and water suspension | ||||||||
| P | 97 | 6.8 | 4.4 | 5.4 | 0.52 | 0.05 | 9.5 | 1.0 |
| AEL | 27 | 6.9 | 4.5 | 5.4 | 0.62 | 0.12 | 11.6 | 2.2 |
| BEL | 31 | 6.5 | 4.9 | 5.5 | 0.54 | 0.10 | 9.7 | 1.7 |
| BT1 | 85 | 6.7 | 4.0 | 5.2 | 0.62 | 0.07 | 11.8 | 1.7 |
| BT2 | 60 | 6.3 | 3.6 | 5.0 | 0.56 | 0.07 | 11.1 | 1.4 |
| BC | 37 | 8.5 | 4.3 | 6.8 | 1.34 | 0.22 | 19.7 | 3.0 |
| C | 52 | 8.6 | 4.1 | 6.7 | 1.54 | 0.21 | 23.2 | 3.2 |
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