Study on the Growth and Degradation Characteristics of Atrazine Degradation Strain Named J2

This paper mainly studies the growth and degradation characteristics of the atrazine degradation strain J₂ isolated from the soil collected from the cornfield in northern China with a long history of atrazine application. The growth and the degradation characteristics at different pHs, temperatures and in mediums with different salinity are also studied. The results indicate that: when J₂ is inoculated 1% into the medium, it can degrade the atrazine, whose concentration in the medium is 100mg/L, completely within 72h. When the medium is cultured at 30degC with a pH of 7, the growth and the degradation ability of J₂ become best. When the salinity of the medium is increases, the growing and degrading abilities of J₂ get worse gradually, this indicates that J₂ can not endure high salinity.