河北省科学院微生物研究所进行的小麦根系联合固氮微生物研究,已取得显著成果。这项成果在国内外均居领先地位。该所通过五年多的研究,先从小麦根系分离到三株固氮菌,又经过三年小麦接种试验,每亩平均增产50—70斤,增产率10—20%。应用时,把菌剂 Hebei Academy of Sciences Institute of Microbiology of wheat root nitrogen fixation microorganisms, has achieved remarkable results. The result is a leading position both at home and abroad. After more than five years of research, the institute first isolated three nitrogen-fixing bacteria from the wheat root system. After three years of wheat inoculation test, the average yield per acre was 50-70 kg and the rate of increase was 10-20%. Application, the bacteria agent