Table 3 The chemical properties of pig manure at different sampling stage.
Sampling time | pH | OM3 (%) | HA4 (%) | C/N | C (%) | N (%) | P (%) | K (%) | Ca (%) | Mg (%) | Mn (mg/kg) | Fe (mg/kg) | Cu (mg/kg) | Zn (mg/kg) | Na (mg/kg) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
W02 | 7.2 ± 0.2a1 | 88.8 ± 5.8a | 0.7 ± 0.4c | 26.3 ± 0.4 | 61.2 ± 1.6a | 2.33 ± 0.12a | 0.32 ± 0.07b | 0.16 ± 0.03b | 10,842 ± 1035b | 1604 ± 166c | 113 ± 61b | 217 ± 96d | 152 ± 49c | 434 ± 123c | 596 ± 93b |
W2 | 7.1 ± 0.3a | 85.9 ± 3.2a | 1.4 ± 0.4b | 26.0 ± 0.3a | 58.1 ± 1.2a | 2.23 ± 0.11a | 0.47 ± 0.18ab | 0.32 ± 0.04a | 16,817 ± 988b | 2751 ± 889bc | 202 ± 32b | 423 ± 175c | 261 ± 56b | 743 ± 139ab | 1111 ± 166a |
W4 | 6.8 ± 0.3a | 78.1 ± 4.9a | 1.6 ± 0.3a | 24.1 ± 0.2a | 54.9 ± 1.1a | 2.28 ± 0.13a | 0.68 ± 0.18a | 0.35 ± 0.03a | 25,773 ± 1125ab | 3374 ± 955b | 261 ± 18b | 428 ± 236c | 282 ± 58b | 998 ± 83b | 1427 ± 123a |
W6 | 7.0 ± 0.1a | 72.6 ± 5.8b | 2.1 ± 0.3a | 21.9 ± 0.2ab | 51.9 ± 1.5ab | 2.37 ± 0.12a | 0.86 ± 0.16a | 0.39 ± 0.04a | 25,560 ± 1023ab | 4914 ± 744b | 308 ± 39a | 1412 ± 1124b | 278 ± 80b | 1048 ± 90b | 1203 ± 163a |
W8 | 7.0 ± 0.2a | 61.1 ± 5.4b | 2.5 ± 0.5a | 19.8 ± 0.4b | 48.6 ± 2.4b | 2.45 ± 0.14a | 0.79 ± 0.15 | 0.32 ± 0.04a | 38,424 ± 1321a | 7361 ± 856a | 406 ± 63a | 4167 ± 1056a | 568 ± 78a | 2067 ± 89a | 1057 ± 134a |