Table 6.17 Characteristic of the rubble-extracted soil
Sample
pH (H
2 O)
EC dS m
−1
CEC (cmol(+)
kg
−1
)
Exchangeable base mg kg
−1
Phosphate absorption
coefficient
Available
phosphate mg kg
−1
Free ion
oxide g kg
−1
T–
C g kg
−1
T–
N g kg
−1
Calcium (CaO)
Magnesium (MgO)
Potassium (K
2 O)
Sodium (Na
2 O)
Extracted soil (dry classification*)
7.5
0.42
14.3
852
35.6
11.0
3.0
320
355
12.0
26.4
1.44
Extracted soil (wet
classification**)
8.0
0.32
9.2
853
23.6
8.6
2.6
250
206
8.6
15.1
0.64
【control】Kitakami paddy soil
5.4
0.06
21.1
114
27.7
19.8
1.0
1710
74
32.6
34.2
2.11
Reference 1: mountain soil A (for
mixing)
6.7
0.15
14.7
280
58.4
5.6
1.9
520
71
14.4
7.4
0.45
Reference 2: mountain soil B (for
mixing)
6.3
0.02
7.8
39
5.1
2.0
1.5
160
116
6.5
2.5
0.12
*Dry classification
**Wet classification
(Reference) Two kinds of mountain climate mixed in sorting soil
6 Tohoku Region
229
Sample
pH (H
2 O)
EC dS m
−1
CEC (cmol(+)
kg
−1
)
Exchangeable base mg kg
−1
Phosphate absorption
coefficient
Available
phosphate mg kg
−1
Free ion
oxide g kg
−1
T–
C g kg
−1
T–
N g kg
−1
Calcium (CaO)
Magnesium (MgO)
Potassium (K
2 O)
Sodium (Na
2 O)
Extracted soil (dry classification*)
7.5
0.42
14.3
852
35.6
11.0
3.0
320
355
12.0
26.4
1.44
Extracted soil (wet
classification**)
8.0
0.32
9.2
853
23.6
8.6
2.6
250
206
8.6
15.1
0.64
【control】Kitakami paddy soil
5.4
0.06
21.1
114
27.7
19.8
1.0
1710
74
32.6
34.2
2.11
Reference 1: mountain soil A (for
mixing)
6.7
0.15
14.7
280
58.4
5.6
1.9
520
71
14.4
7.4
0.45
Reference 2: mountain soil B (for
mixing)
6.3
0.02
7.8
39
5.1
2.0
1.5
160
116
6.5
2.5
0.12
*Dry classification
**Wet classification
(Reference) Two kinds of mountain climate mixed in sorting soil
6 Tohoku Region
229