【摘要】：在實(shí)驗(yàn)室條件下,研究了細(xì)菌菌株JY-2和JY-5對(duì)二甲戊靈污染土壤的修復(fù)作用及其影響因素,并采用生物法進(jìn)行驗(yàn)證。結(jié)果表明,二甲戊靈的降解率與接種量呈正相關(guān),其中,當(dāng)接種量為10%(0.6×109CFU/g)時(shí),接種后15 d菌株JY-2和JY-5對(duì)土壤中200 mg/kg二甲戊靈的降解率分別達(dá)到66.18%和65.66%,低于此接種量時(shí)降解菌的降解作用較弱;土壤溫度及含水量對(duì)菌株降解作用具有顯著影響,最適土壤溫度為30℃,最佳含水量為600 g/kg,在此條件下,菌株JY-2和JY-5對(duì)二甲戊靈的降解率分別為73.25%和67.07%;接種降解菌JY-2和JY-5可不同程度降解土壤中二甲戊靈,減輕二甲戊靈對(duì)玉米和棉花生長(zhǎng)的抑制作用,具有一定的土壤修復(fù)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，

本文編號(hào)：2178849