Research Article
Effects of Complex Fertilizers on the Properties of Grey Forest Heavy Loamy Soil
Table 4
Determination of correlation coefficient between yield of fodder beet and the amount of nitrate nitrogen in the soil.
| Experiment | Deviation from average | Squares of deviations | Sum |
| 1 | −10.25 | −42.1 | 105.0625 | 1,772.41 | 431.525 | 2 | −10.05 | −40 | 101.0025 | 1600 | 402 | 3 | −5.75 | 8.9 | 33.0625 | 79.21 | −51.175 | 4 | 7.55 | 13.3 | 57.0025 | 176.89 | 100.415 | 5 | 8.25 | 17.9 | 68.0625 | 320.41 | 147.675 | Average | — | — | 364.1925 | 3,948.92 | 1,030.44 |
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