从不同环境中采集7份土壤样品用于芽孢杆菌的分离纯化，通过多次平板划线分离纯化得到30个菌落形态不同的菌株。
Strains of Bacillus spp. were isolated from 7 soil samples using repeated plate streaking, and 4 strains of them had rivalry ability to Fusarium oxysporum f. sp. cucumerinum.
为了进行萝卜汁乳酸发酵，从泡菜汁、酸奶及其它样品中，用MRS和BCP培养基进行乳酸菌稀释平板和划线分离。
In order to ferment radish juice, lactic bacteria is isolated with the method of serial dilutions and plate streaking in MRS and BCP medium, from yogurt, sour vegetable juice and other samples.
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.
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