Table 2.
Analysis of variance (ANOVA) for the effects of fungal inoculation (Fungi) and nitrogen addition treatment (N) on growth and physiological parameters and microbial composition in the rhizosphere soil of Pinus tabulaeformis.
| Fungi | N | Fungi × N | ||||
|---|---|---|---|---|---|---|
| F | p | F | p | F | p | |
| Fungi colonization rate | 45.881 | <0.001 | 120.735 | <0.001 | 79.895 | <0.001 |
| Plant height | 19.885 | <0.001 | 62.675 | <0.001 | 6.060 | <0.001 |
| Ground diameter | 8.220 | <0.001 | 89.460 | <0.001 | 1.975 | 0.084 |
| Shoot dry weight | 1.712 | 0.173 | 46.127 | <0.001 | 2.140 | 0.063 |
| Root dry weight | 6.979 | <0.001 | 115.226 | <0.001 | 32.099 | <0.001 |
| Total dry weight | 4.193 | <0.001 | 96.866 | <0.001 | 8.461 | <0.001 |
| Mycorrhizal growth response | 5.561 | 0.005 | 179.965 | <0.001 | 3.537 | 0.012 |
| Total root length | 21.519 | <0.001 | 304.060 | <0.001 | 4.048 | 0.002 |
| Root surface area | 41.821 | <0.001 | 98.026 | <0.001 | 17.421 | <0.001 |
| Root volume | 27.442 | <0.001 | 405.086 | <0.001 | 45.573 | <0.001 |
| Average root diameter | 12.492 | <0.001 | 35.555 | <0.001 | 28.349 | <0.001 |
| Shoot N concentration | 3.311 | 0.023 | 170.377 | <0.001 | 3.087 | 0.012 |
| Shoot P concentration | 20.156 | <0.001 | 215.700 | <0.001 | 3.746 | 0.004 |
| Shoot K concentration | 16.939 | <0.001 | 251.842 | <0.001 | 3.019 | 0.013 |
| Root N concentration | 20.005 | <0.001 | 93.647 | <0.001 | 2.359 | 0.042 |
| Root P concentration | 30.805 | <0.001 | 210.569 | <0.001 | 15.254 | <0.001 |
| Root K concentration | 23.139 | <0.001 | 463.239 | <0.001 | 34.561 | <0.001 |
| Gram-positive bacteria | 5.266 | 0.002 | 25.013 | <0.001 | 1.919 | 0.094 |
| Gram-negative bacteria | 19.857 | <0.001 | 45.345 | <0.001 | 0.961 | 0.484 |
| Fungi | 3.807 | 0.013 | 21.142 | <0.001 | 0.406 | 0.908 |
| Actinomycetes | 5.802 | 0.001 | 86.796 | <0.001 | 3.114 | 0.011 |
| Total PLFAs | 29.905 | <0.001 | 152.590 | <0.001 | 2.528 | 0.031 |
| Shannon–Weaver index | 1.349 | 0.275 | 20.992 | <0.001 | 3.203 | 0.009 |
Significant p values are in bold.