Research Article

County-Scale Spatial Variability of Macronutrient Availability Ratios in Paddy Soils

Table 1

Summary statistics for macronutrient elements and other selected properties of paddy soils .

RangeMinimumMaximumMeanS.D.SkewnessKurtosisC.V. (%)

N availability ratio (%)14.13 3.38 17.50 9.43 1.33 1.09 5.45 14.07
P availability ratio (%)31.88 0.12 32.00 2.45 3.08 4.76 31.11 125.36
K availability ratio (%)4.51 0.13 4.64 0.56 0.35 3.97 33.08 61.81
TN (g/kg) 1.87 0.48 2.35 1.44 0.31 0.14 21.69
AN (mg/kg)181.00 45.00 226.00 134.64 28.15 0.18 20.91
TP (g/kg)15.65 0.15 15.80 0.74 0.66 18.75 426.86 88.73
ln TP4.66 2.76 0.46 4.07
AP (mg/kg)93.00 2.00 95.00 14.03 11.21 2.55 9.73 79.89
ln AP3.86 0.69 4.55 2.39 0.71 29.54
TK (g/kg)28.36 7.33 35.69 19.96 3.41 0.91 1.87 17.07
ln TK 1.58 1.99 3.57 2.98 0.17 3.00 5.61
AK (mg/kg)400.00 25.00 425.00 111.11 64.66 1.87 4.43 58.20
ln AK2.83 3.22 6.05 4.57 0.53 0.01 0.34 11.60
SOM (g/kg)35.65 4.89 40.54 23.11 5.31 0.07 22.97
pH3.00 5.10 8.10 6.61 0.67 0.76 10.08
CEC (cmol (+)/kg)30.42 1.08 31.50 12.78 4.19 0.04 0.83 32.79
AB (mg/kg)5.04 0.10 5.14 0.64 0.55 3.59 18.16 86.73
ACu (mg/kg)5.28 0.61 5.89 2.70 0.89 0.45 33.08
AZn (mg/kg)8.39 0.12 8.51 1.38 0.73 2.40 15.20 52.58
AMn (mg/kg)545.41 5.79 551.20 33.08 25.79 12.92 256.27 77.96
AFe (mg/kg)349.74 6.03 355.77 118.78 89.18 0.67 75.08
AS (mg/kg)182.65 7.85 190.50 41.25 21.99 1.42 4.58 53.30