| 摘要 |
[Objectives] To investigate the effects of three foliar fertilizers on photosynthetic characteristics, fruit quality and yield of hawthorn. [Methods] Taking hawthorn foliar fertilization as the reference, the photosynthetic rate, transpiration rate, intercellular CO2 concentration, stomatal conductance and single fruit weight of hawthorn leaves were measured under different concentrations of foliar fertilizer. [Results] The results showed that the photosynthetic rate, transpiration rate and stomatal conductance of hawthorn leaves increased significantly, while the intercellular CO2 concentration decreased. Specifically, the fish protein peptide foliar fertilizer performed best, with net photosynthetic rate and transpiration rate increased by 57.22% and 57.51%, respectively. All the three foliar fertilizers significantly reduced the intercellular CO2 concentration. In addition, fertilization significantly increased the single fruit weight of hawthorn, and the effect of fermented fulvic acid foliar fertilizer was the most significant, with the highest growth rate of 68.49%. [Conclusions] Spraying foliar fertilizer significantly increased the content of Vc, titratable acid, anthocyanin and soluble solids of hawthorn fruit, among which fermented fulvic acid foliar fertilizer had the optimal effect. |
