通用调理剂对土壤PCB28降解的效果及影响因素研究

目的]明确施用通用调理剂对土壤PCB28降解的影响。方法]土壤添加2 mg/kg PCB28后,根据不同浓度通用调理剂、有机肥和含水率等设置12个处理,开展培养试验,并于培养0、14、21、28 d采集土样分析PCB28浓度。结果]施用调理剂能够促进土壤PCB28的降解,其降解率为48.6%,施用有机肥可以继续促进PCB28的降解率至59.8%,并且提高含水率能够进一步提高PCB28的降解率至67.9%。结论]施用0.4 mg/g调理剂、0.7 mg/g有机肥和提高土壤含水率能够显著提高土壤PCB28的降解率。

Effect of General Soil Conditioner on Soil PCB28 Degradation and Its Influencing Factors

Objective] Effect of soil general conditioner on soil PCB28 degradation was investigated.Method] 2 mg/kg PCB28 was added to the soil,and culture experiments were carried out with 12 treatments of different concentration of general conditioner,organic fertilizer and water content.Soil samples were collected after culturing for 0,14,21,28 days,and PCB28 concentration was analyzed.Result] Application of soil conditioner could promote soil PCB28 degradation,and the degradation rate was 48.6％,and together with application of organic fertilizer could continue to promote PCB28 degradation rate to 59.8％,and what's more,increasing soil water content could further improve PCB28 degradation rate to 67.9％.Conclusion] Application of 0.4 mg/g soil conditioner,0.7 mg/g organic fertilizer and increasing soil moisture content could significantly improve the degradation rate of soil PCB28.