Table 4.
The correlation analysis of each index of alfalfa under different bacterial treatments
| Index | Aboveground biomass (g pot−1) | Infection rate (%) | Plant height (cm) | Stem diameter (mm) |
Crude protein content (%) | NDF (%) | ADF (%) | Chlorophyll content (mg kg−1) |
|---|---|---|---|---|---|---|---|---|
| Infection rate (%) | 0.604* | |||||||
| Plant height (cm) | 0.736** | 0.463 | ||||||
| Stem diameter (mm) | 0.529* | 0.317 | 0.542* | |||||
| Crude protein content (%) | 0.811** | 0.556* | 0.621* | 0.565* | ||||
| NDF (%) | 0.105 | 0.35 | 0.06 | 0.512* | 0.168 | |||
| ADF (%) | 0.104 | 0.225 | 0.098 | 0.554* | 0.157 | 0.718** | ||
| Chlorophyll content (mg kg−1) | 0.550* | 0.801** | 0.484 | 0.289 | 0.510* | 0.266 | 0.169 | |
| Content of soluble suger (mg kg−1) | 0.420 | − 0.850 | 0.338 | 0.205 | 0.567* | − 0.295 | − 0.381 | 0.125 |
*Significant correlation was found at the 0.05 level (bilateral), **significant correlation was found at the 0.01 level (bilateral)