|
| 各等级比例 The proportion of each grade | 土壤肥力综合指标值(IFI) Integrated fertility index | ||||||||
I (IFI ≥ 0.75) | II (0.50 ≤ IFI < 0.75) | III (0.25 ≤ IFI < 0.50) | IV (IFI < 0.25) | 平均值 Mena | 标准差 S | 最小值 Min | 最大值 Max | 变异系数 CV% | |||
2009~2010 | <1600 m | 0.00 | 32.56 | 67.44 | 0.00 | 0.47 | 0.11 | 0.27 | 0.73 | 23.40% | |
1600~1800 | 0.00 | 59.38 | 40.62 | 0.00 | 0.53 | 0.12 | 0.30 | 0.70 | 22.64% | ||
>1800 | 6.25 | 50.00 | 43.75 | 0.00 | 0.53 | 0.12 | 0.29 | 0.79 | 22.64% | ||
总体Total | 2.44 | 46.34 | 51.21 | 0.00 | 0.51 | 0.12 | 0.27 | 0.79 | 23.53% | ||
2015~2017 | <1600 m | 4.00 | 36.00 | 48.00 | 12.00 | 0.48 | 0.15 | 0.19 | 0.80 | 31.25% | |
1600~1800 | 5.26 | 84.21 | 10.52 | 0.00 | 0.64 | 0.11 | 0.37 | 0.82 | 17.19% | ||
>1800 | 0.00 | 56.67 | 41.67 | 1.66 | 0.51 | 0.11 | 0.21 | 0.74 | 21.56% | ||
总体Total | 1.92 | 56.73 | 37.50 | 3.85 | 0.52 | 0.13 | 0.19 | 0.82 | 25.00% |