Nitrogen fixation of faba bean interacting with a non legume in two contrasting

Nitrogen fixation of faba bean interacting with a non-legume in two contrasting intercropping systems，范分良，余常兵，A field experiment was carried out to quantify biological nitrogen fixation (BNF) using the 15N isotope natural abundance method in maize (Zea mays L.) / faba bean (Vicia faba L.)