Figure 7: An inverse proportional function describing the relationship between net water saving and planting densities in fogging treatment.
Where ∆I was saved irrigation by VPD regulation, kg plant−1; ΣWfogging was fogging water consumption per unit of area, kg m−2. This model was parameterized based on assumption that plant growth and microclimate were uniformity in the application of fogging. Since daily water loss due to transpiration (T, kg palnt−1) was counterbalanced by adding exact amounts of irrigation in present study, thus the amount of irrigation was equal to cumulative transpired water consumption (∆T = ∆I). ∆I and ΣWfogging were considered as constant parameters (3.4 kg plant−1 and 31.8 kg m−2, respectively), which was derived from experiments.
