A method for promoting the growth of *
Paeonia suffruticosa* includes the following steps: S1: Collecting,
processing, and
sowing *
Paeonia suffruticosa* seeds; S2: Establishing a natural light and ambient
temperature monitoring system to collect real-
time data on the effective
daytime illumination duration, average effective
light intensity, and average ambient temperature of the
seedling area, obtaining basic environmental parameters for the day; S3: Based on the basic environmental parameters for the day, calculating the target duration, target intensity, and
spectral ratio of nighttime light interference using a preset
dynamic coupling model, obtaining nighttime
light control parameters; S4: Performing nighttime light interference treatment on *
Paeonia suffruticosa* seedlings according to the nighttime
light control parameters; S5: Implementing dynamic water and
fertilizer management based on the
seedling growth stage and the nighttime light interference intensity. This method precisely supplements nighttime light according to the
daytime light gap, ensuring that the total effective light amount remains stable at the optimal level each day, thus promoting the growth of *Paeonia suffruticosa*.