After further purifing the isoloated bacteria , we classified and characterized them , according to their individual form , physiological and biochemical to characterize , characterize to bacteria genus . calculated the total of aerobic bacteria in soil of each senson , the total of bacteria of degrading omethoate , as well as the percentage of each degradation bacteria genus , and measured the physico chemical nature of each seasonal soil sample 将分离到的菌株进一步纯化后，按其个体形态、生理生化特征，进行分类鉴定，鉴定到菌属；计算出各季节土壤中的细菌总数、降解有机磷农药氧乐果的细菌总数以及各降解菌属的百分比，测出各季节土壤样品的物理化学性质。
