| 摘要 |
[Objectives] This study was conducted to investigate the effects of intercropping and arbuscular mycorrhizal fungi (AMF) on the photosynthetic characteristics of ginger (Zingiber officinale Roscoe), and to analyze the correlations between photosynthetic pigments and photosynthetic parameters. [Methods] Using ‘Luoping Yellow Ginger ’ and ‘King 336’ pepper as plant materials, a two-factor pot experiment was conducted with monoculture vs. intercropping and inoculation vs. non inoculation with the arbuscular mycorrhizal fungus Funneliformis mosseae. The effects of AMF inoculation and intercropping patterns on the net photosynthetic rate (Pn), stomatal conductance (Gs), transpiration rate (Tr), intercellular CO₂ concentration (Ci), and photosynthetic pigments of ginger were analyzed. [Results] The results showed that at 60 d of growth, AMF significantly increased the net photosynthetic rate, stomatal conductance, and transpiration rate of monoculture ginger (P < 0.05). The enhancement of photosynthesis was dependent on improved stomatal opening and water use efficiency. However, no significant differences in photosynthetic pigment contents were observed. From 90 to 120 d, photosynthesis declined and intercellular CO₂ concentration increased, indicating a shift in photosynthetic limitation from stomatal to non stomatal factors. In the intercropping with AMF treatment, Pn decreased significantly. Correlation analysis indicated that AMF and intercropping weakened the association between photosynthetic pigments and photosynthetic performance. In summary, AMF inoculation and cropping patterns can regulate the photosynthetic characteristics of ginger, and this regulation depends on stomatal behavior and growth stage dynamics. [Conclusions] This study provides a theoretical reference for research on the photosynthetic characteristics of ginger. |
