生物固氮作用(Biological nitrogen fixation)
生物固氮作用(Biological nitrogen fixation)
相关考题:
单选题The three basic elements necessary for any fire are ().Aheat, gas, and flamesBfuel, heat, and oxygenCheat, nitrogen, and fuelDfuel oil, nitrogen, and oxygen
问答题何谓氨化作用、硝化作用、反硝化作用、固氮作用?它们各由哪些微生物起作用?