Responses of Planting Modes to Photosynthetic Characteristics and Fluorescence Parameters of Fokienia hodginsii Seedlings in a Heterogeneous Nutrient Environment

Fokienia hodginsii seedlings tend to vary significantly in response differences the surrounding environment, especially when nutrient environment is heterogeneous and neighboring plants are competition. Plant physiological occur not only root system, but also photosynthetic characteristics fluorescence parameters of leaves. Therefore, this experiment, three planting modes (single planting, pure F. mixed Cunninghamia lanceolata) were set up simulate different competition patterns. Three environments (N, P, K environment) planted homogeneous used as controls determine characteristics, interaction environmental factors on each index environments. The interactions with various indicators measured. In addition, all treatment combinations evaluated ranked by principal components analysis. results showed that net rate (Pn) was average 28.8% 22.3% higher under monoculture compared environment. Transpiration (Tr) stomatal conductance (Gs) lowest mode, overall mean Tr 27.2% 5.5% lower than respectively, Gs 36.5% 14.7% lower, respectively. Intercellular CO2 concentration (Ci) mode monoculture, their increments significant. Pn, values N P patches those patches, whereas slightly patches. leaf Fo, Fv/Fm qP patch single most actual photochemical efficiency (yield), electron transfer (ETR) NPQ differed due Most Planting patterns heterogeneity significant effects Gs, Yield, ETR, NPQ. highest scores for