2株降解菌对土壤中二甲戊灵的降解效果
发布时间：2018-08-12 11:01
【摘要】：在实验室条件下,研究了细菌菌株JY-2和JY-5对二甲戊灵污染土壤的修复作用及其影响因素,并采用生物法进行验证。结果表明,二甲戊灵的降解率与接种量呈正相关,其中,当接种量为10%(0.6×109CFU/g)时,接种后15 d菌株JY-2和JY-5对土壤中200 mg/kg二甲戊灵的降解率分别达到66.18%和65.66%,低于此接种量时降解菌的降解作用较弱;土壤温度及含水量对菌株降解作用具有显著影响,最适土壤温度为30℃,最佳含水量为600 g/kg,在此条件下,菌株JY-2和JY-5对二甲戊灵的降解率分别为73.25%和67.07%;接种降解菌JY-2和JY-5可不同程度降解土壤中二甲戊灵,减轻二甲戊灵对玉米和棉花生长的抑制作用,具有一定的土壤修复作用。
[Abstract]:The effects of bacterial strains JY-2 and JY-5 on soil remediation of dimethylpentalin contaminated soil and its influencing factors were studied under laboratory conditions and were verified by biological method. The results showed that the degradation rate of dimethylpentalin was positively correlated with the inoculation amount, and when the inoculation amount was 10% (0. 6 脳 109CFU/g), 15 days after inoculation, the degradation rates of 200 mg/kg dimethyl pentyl in soil by JY-2 and JY-5 reached 66.18% and 65.66%, respectively, which were lower than that of the inoculation, and the degradation rate of the bacteria was weak when the inoculation amount was lower, and the soil temperature and water content had a significant effect on the degradation of the strain. The optimum soil temperature was 30 鈩，
本文编号：2178849
[Abstract]:The effects of bacterial strains JY-2 and JY-5 on soil remediation of dimethylpentalin contaminated soil and its influencing factors were studied under laboratory conditions and were verified by biological method. The results showed that the degradation rate of dimethylpentalin was positively correlated with the inoculation amount, and when the inoculation amount was 10% (0. 6 脳 109CFU/g), 15 days after inoculation, the degradation rates of 200 mg/kg dimethyl pentyl in soil by JY-2 and JY-5 reached 66.18% and 65.66%, respectively, which were lower than that of the inoculation, and the degradation rate of the bacteria was weak when the inoculation amount was lower, and the soil temperature and water content had a significant effect on the degradation of the strain. The optimum soil temperature was 30 鈩，
本文编号：2178849
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