有效微生物群(EM)对绿磺隆降解的研究

Study on degradation of chlorsulfuron by EM

采用生物测定的方法,测定了有效微生物群(EM)对土壤和水中绿磺隆的降解效果。结果表明,不同初始浓度的绿磺隆降解曲线在第10天以前都表现出较大的斜率,说明降解速度较快;土壤中添加EM的降解作用随着绿磺隆初始浓度的提高而增强,绿磺隆初始浓度由低到高的不同处理,其第35天的残留浓度依次比对照低0.017,0.808,3.769μg·kg^(-1);在绿磺隆初始浓度相同的处理中,加大EM的剂量,也会使绿磺隆的降解率有所提高。此外,EM对水中绿磺隆的降解规律与土壤中的相似。

Effect of EM（Effective microorganism） on degradation of chlorsulfuron in soil and in water was measured by bioassay method. The slopes of degradation curves were very steep in the first 10 days. This indicated that the chlorsulfuron of different initial concentrations could be degraded quickly by EM. Thirty-five days after the treatment, the degradation tended to increase with the increase of the initial concentrations of chlorsulfuron, the concentrations of residual chlorsulfuron were 0.017, 0.808, 3.769 μg·kg^-1 lower than the respective control from low initial concentrations to high. The degradating effect of chlorsulfuron rose significantly by adding more EM under the same concentration of chlorsulfuron. Moreover, EM had the similar effect on chlorsulfuron degradation in water when compared with the measurements in soil.