International Journal of Agronomy / 2017 / Article / Tab 2

Research Article

Sewage Sludge Amendment Combined with Green Manuring to a Coastal Mudflat Salt-Soil in Eastern China: Effects on Soil Physicochemical Properties and Maize Yield

Table 2

Effects of sewage sludge amendment (SSA) combined with green manuring on the size composition of soil water-stable aggregates at 0–20 cm and 20–40 cm depths of coastal mudflat salt-soil.

YearSSA (t ha−1)Water-stable aggregates (%)
0–20 cm depth20–40 cm depth
>0.25 mm0.106–0.25 mm<0.106 mm>0.25 mm0.106–0.25 mm<0.106 mm

201303.33 ± 1.420.98 ± 0.1695.71 ± 1.920.61 ± 0.350.59 ± 0.0698.80 ± 0.29
303.58 ± 1.501.33 ± 0.6095.11 ± 3.092.98 ± 2.810.77 ± 0.3296.25 ± 3.13
754.32 ± 2.351.09 ± 0.4594.60 ± 2.801.02 ± 0.610.52 ± 0.0398.46 ± 0.58
1507.38 ± 2.581.75 ± 0.4790.87 ± 3.042.31 ± 0.960.81 ± 0.1996.88 ± 1.15
30011.58 ± 2.692.97 ± 0.9885.46 ± 4.171.20 ± 0.100.50 ± 0.0698.30 ± 0.16
-value7.775.595.801.441.071.05

2014013.00 ± 2.173.18 ± 0.9583.83 ± 1.460.99 ± 0.190.50 ± 0.0698.51 ± 0.13
3016.26 ± 7.233.41 ± 0.3880.34 ± 7.570.68 ± 0.450.59 ± 0.0698.73 ± 0.38
7525.49 ± 7.585.11 ± 2.0869.40 ± 9.621.97 ± 1.950.77 ± 0.3297.26 ± 2.27
15026.72 ± 2.435.12 ± 0.4668.16 ± 2.412.22 ± 1.090.72 ± 0.3297.06 ± 1.41
30031.65 ± 2.936.84 ± 4.4561.51 ± 7.271.45 ± 0.260.61 ± 0.1097.94 ± 0.35
-value6.985.726.040.780.5410.73

Values are mean ± SD of three replicates. Different letters in each column indicate significant difference at by LSD’s multiple range test. Values of are the test in ANOVA; ; ; .

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