Table 1. Treatments performed in controlled growth chambers that were applied to strawberry plants for nearly 6 monthsa.
| Description | Denoted |
| Increase in CO2 (720 ppm) | C |
| Increase in temperature (25°C/20°C; day temperature/night temperature) | T |
| Increase in nitrogen fertilizer input (50 ml of 0.1% NH4NO3 twice a week per plant ) | N |
| Increase in CO2, temperature and nitrogen input | CTN |
| Increase in CO2 and temperature | CT |
| Increase in CO2 and nitrogen input | CN |
| Increase in temperature and nitrogen input | TN |
| Control (360 ppm×20°C/15°C×without nitrogen input) | ck |
a
Values in round brackets indicate the detailed factors designed in the experiment.