机译:The effects of para-hydroxybenzoic acid treatment on photosynthetic parameters of Populus x euramericana "Neva"
Shandong Agr Univ, Coll Forestry, Shandong Prov Key Lab Soil Eros & Ecol Restorat, Key Lab Agr Ecol & Environm, Tai An 271018, Shandong, Peoples R China;
Linyi Univ, Coll Life Sci, Linyi 276000, Peoples R China;
chlorophyll fluorescence; cropping obstacle; gas exchange; plant allelopathy; poplar;