EFFECTS OF Azotobacter chroococcum BEIJERINCK ON YIELD AND
FERTILIZER N USE EFFICIENCY OF SPRING WHEAT
LEI Bing-Lin, WANG Wen-Li, LI , JUAN , CHE Zong-Xian
J4 . 2010, (3): 599 -604 .  DOI: 10.11869/hnxb.2010.03.0599