利用平板划线法和乙炔还原法对羊草和冰草根际固氮菌进行分离和固氮活性的测定。
The azotobacteria in the rhizosphere of Leymus chinensis and Agropyron mongolica were separateda, nd their activities were measured by the methods of dilution-plate method and etylene reduction assay.
划线平板法是最有用的平板法。
The streaked plate is in general the most useful plating method.
划线平板法是最有用的平板法。
The streaked plate is in general the most useful plating method.
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