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Official Journal of the Asia Oceania Geosciences Society (AOGS)

Table 2 Effect of soil amendments on WEOC:WEON ratio in low-salinity and high-salinity soils

From: Effects of amendments on carbon and nitrogen fractions in agricultural soils of Yellow River Delta

Treatments

Low-salinity soil

High-salinity soil

0–20 cm

20–40 cm

0–20 cm

20–40 cm

Initial

3.83 ± 0.01b

8.57 ± 0.37a

6.23 ± 0.08a

6.80 ± 0.75a

CK

1.71 ± 0.11 fg

1.87 ± 0.22f

2.62 ± 0.22ef

2.74 ± 0.17de

G1

1.71 ± 0.15 fg

2.17 ± 0.15ef

2.59 ± 0.20ef

1.90 ± 0.06e

G2

1.56 ± 0.05 g

2.26 ± 0.35ef

2.14 ± 0.12f

2.71 ± 0.29de

Ca1

2.08 ± 0.06ef

2.80 ± 0.19ef

3.32 ± 0.24de

3.25 ± 0.22de

Ca2

2.07 ± 0.06ef

2.28 ± 0.07ef

2.81 ± 0.35def

2.78 ± 0.18de

B1

3.35 ± 0.29bc

3.93 ± 0.38c

3.55 ± 0.24 cd

4.12 ± 0.45 cd

B2

4.53 ± 0.33a

5.21 ± 0.56b

4.76 ± 0.48b

5.83 ± 0.75ab

S1

2.69 ± 0.19d

2.97 ± 0.03de

4.72 ± 0.43b

3.93 ± 0.48 cd

S2

2.62 ± 0.11d

2.76 ± 0.37e

3.47 ± 0.14 cd

3.69 ± 0.29 cd

S1G1

2.52 ± 0.13de

2.96 ± 0.28de

4.62 ± 0.58b

4.97 ± 0.47bc

S2G2

2.98 ± 0.16 cd

3.85 ± 0.31 cd

4.24 ± 0.19bc

5.02 ± 0.38bc

  1. Values followed by different letters indicate significant differences among treatments (p < 0.05) according to LSD