Table 1. The soil physicochemical properties, and microbial activities and biomass carbon in different treatments.
| pH (1:5 water) | EC (1:5 water) (μS cm-1) | NH4 +-N (μg g-1) | NO3 –-N (μg g-1) | Total N (mg g-1) | Available P (μg g-1) | Available K (μg g-1) | Organic C (mg g-1) | Phosph (μg g-1) | β-gluco (μg g-1) | Aryl (μg g-1) | Urea (μg g-1) | Dehydr (μg g-1) | FDA (μg g-1) | SR (CO2 μL g-1 d-1) | MBC (μg g-1) | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Test 1 | Trial 1 | CK | 5.47±0.05b | 543±28b | 9.3±0.4c | 321±31c | 2.24±0.18ab | 96±10ab | 75±6c | 26.6±2.3c | 332±24c | 123±24b | z40±4c | 173±13c | 2.43±0.31c | 342±13c | 36.4±3.6d | 186±6d |
| O | 5.62±0.09b | 554±13b | 10.3±0.5b | 413±20b | 2.52±0.15a | 120±15a | 95±7ab | 31.4±1.0ab | 391±24ab | 145±16b | 62±5b | 237±19ab | 3.31±0.35b | 348±27c | 52.2±6.4c | 253±18c | ||
| B | 5.92±0.07a | 712±15a | 12.1±0.2a | 473±20a | 2.75±0.29a | 130±10a | 113±9a | 33.1±1.1a | 420±18a | 198±20a | 91±4a | 286±22a | 4.10±0.22a | 446±24a | 91.7±5.9a | 335±14a | ||
| Trial 2 | CK | 5.54±0.04d | 834±20c | 8.6±0.4b | 446±26c | 1.58±0.06c | 522±21c | 420±21c | 31.2±1.6c | 262±11c | 254±15c | 108±5c | 186±14c | 3.34±0.32d | 262±9c | 29.2±4.3c | 145±12c | |
| O | 5.80±0.06c | 843±32c | 9.3±0.3b | 529±13ab | 1.83±0.12b | 611±19b | 475±28b | 41.0±0.7b | 318±13b | 290±12ab | 150±14b | 241±18ab | 4.03±0.24c | 326±20b | 41.7±5.8b | 224±20b | ||
| B | 6.40±0.07a | 1048±38a | 10.4±0.4a | 562±18a | 2.15±0.04a | 729±30a | 602±30a | 42.8±1.0a | 374±13a | 340±21a | 250±21a | 290±18a | 5.67±0.22a | 395±17a | 73.9±4.6a | 313±12a | ||
| Test 2 | Trial 3 | CK | 5.52±0.06c | 655±14b | 9.7±1.1b | 207±11c | 3.72±0.17c | 723±19b | 543±14b | 41.3±1.6c | 233±30b | 127±19b | 24±2c | 182±14b | 2.76±0.40c | 93±8b | 19.6±3.1c | 79±11c |
| S | 5.99±0.12b | 640±30b | 13.4±1.0a | 254±15b | 4.19±0.12b | 809±20a | 561±13b | 44.4±1.1b | 250±14b | 134±21b | 31±2b | 180±12b | 3.84±0.28b | 87±8b | 26.3±2.0b | 124±10b | ||
| S+B | 6.24±0.04a | 900±25a | 13.7±0.5a | 332±12a | 4.59±0.15a | 816±20a | 613±14a | 53.6±2.4a | 295±15a | 178±16a | 53±4a | 231±14a | 5.77±0.21a | 169±17a | 62.6±6.3a | 248±15a | ||
| Trial 4 | CK | 5.72±0.13c | 476±13c | 10.1±0.3b | 119±17c | 3.48±0.39b | 631±17b | 440±17b | 38.8±2.9c | 303±20b | 153±17b | 48±5b | 112±4c | 2.51±0.32c | 232±18b | 27.6±4.7c | 135±5c | |
| S | 6.12±0.09b | 550±23b | 13.4±1.7a | 169±10b | 3.87±0.45b | 743±20a | 457±20b | 42.8±3.9b | 301±14b | 162±9b | 54±9b | 140±8b | 4.15±0.41b | 240±12b | 42.5±6.4b | 181±5b | ||
| S+B | 6.40±0.12a | 735±32a | 13.7±0.8a | 203±11a | 4.66±0.10a | 754±37a | 734±30a | 49.4±1.5a | 345±12a | 248±13a | 112±6a | 196±10a | 6.09±0.40a | 397±19a | 71.8±5.3a | 352±18a |
Data were expressed as mean ± standard error (n = 4). The data within a column of each trial with a same letter did not differ significantly at Fisher’s least significant difference test (LSD) and Duncan’s significance level 0.05. Phosph, phosphomonoesterase activity; Aryl, arylsulfatase activity; β-gluco, β-D-glucosidase activity; Dehydr, dehydrogenase activity; Urea, urease activity; FDA, fluorescein diacetate hydrolase activity; SR, soil respiration; MBC, microbial biomass carbon. CK: NPK fertilizer; O: NPK fertilizer + organic fertilizer; B: NPK fertilizer + bioorganic fertilizer; S: NPK fertilizer + soil disinfection; S+B: soil disinfection + NPK fertilizer + bioorganic fertilizer.