Table 4. Microbial alpha diversity as affected by fertilization and irrigation in 2018.
| Microbe | Treatment | Coverage (%) | Richness | Diversity | ||
|---|---|---|---|---|---|---|
| ACE | Chao 1 | H′ | D (×10−3) | |||
| Bacteria | T0 | 98.71±0.07a(b) | 1789±61a(a) | 1812±37b(a) | 6.23±0.15a(a) | 5.57±0.78a(a) |
| T1 | 98.77±0.02a(b) | 1885±23a(a) | 1892±26a(a) | 6.41±0.11a(a) | 4.62±1.16a(b) | |
| T2 | 98.72±0.05a(b) | 1841±47a(a) | 1858±48ab(a) | 6.33±0.11a(a) | 5.53±2.06a(b) | |
| Fungi | T0 | 99.97±0.00a(a) | 166±32a(b) | 167±34b(b) | 3.00±0.48a(b) | 137.13±95.62a(a) |
| T1 | 99.96±0.00a(a) | 171±14a(b) | 173±18a(b) | 3.20±0.36a(b) | 86.43±43.58a(a) | |
| T2 | 99.95±0.00a(a) | 199±8a(b) | 201±6ab(b) | 3.15±0.23a(b) | 95.38±51.71a(a) | |
Notes: T0 = Traditional irrigation; T1 = Traditional irrigation and fertilization practice; T2 = Water-saving irrigation and optimizing fertilization. Operational taxonomic units (OTUs); Abundance-based coverage estimators (ACE); H′: Shannon-Wiener index; D: Simpson’s index. Values (means ± SD) with different lower-case letters inside and outside the parentheses in a column are significantly different between soil microbes or fertilizer treatments at P < 0.05 according to the Duncan test.