@article{Bai Ke-zhi:, author = {Bai Ke-zhi, Yu Sai-ling and Shi Ding-ji}, title = {A Simple Method for the in Situ Nitrogen Fixation Measurement of Azolla imbricata}, publisher = {J Integr Plant Biol}, year = {1979}, journal = {Journal of Integrative Plant Biology}, volume = {21}, number = {2}, eid = {}, numpages = {0}, pages = {}, keywords = {}, url = {https://www.jipb.net/EN/abstract/article_24619.shtml}, doi = {} }