耕地受多效唑农药污染后的再生修复技术

通过循环富集法筛得多效唑高效降解菌—假单胞杆菌和芽孢杆菌 ;通过研究环境条件对降解菌降解效果的影响发现 :在液体无菌培养基中振荡 35d多效唑自然降解率达98.7%。在液体有菌培养基中振荡 35d多效唑降解率达 99.8%。混合菌群能彻底降解多效唑产生CO2 。建立了受多效唑污染土壤的再生修复技术 :投放降解菌、勤松土少积水、多光照多通气 ,35d土壤中多效唑的降解效果达 86.2 % ,土壤中微生物含量恢复到正常值的 89%。

THE REPARATIVE REGENERATION TECHNOLOGY OF SOIL THAT WAS CONTAMINATED BY PACLOUTRAZOL

The high efficiency degrading bacteria ?Pseudomonas ?and ?Bacillus? were obtained by circulation culture. The conditions that influence degradative efficiency were studied. 98.7%?1/4HT?1/2 of pacloutrazol can be degraded naturally in sterile medium under vibration condition 99.8%?1/4HT?1/2 of pacloutrazol can be degraded by degrading bacteria. Pacloutrazol can be degraded down to CO 2 by mixed degrading bacteria. If plenty of oxygen and light are adsorbed by soil, after 35d about 86.2%?1/4HT?1/2 of pacloutrazol can be degraded and biomass can reach 89%?1/4HT?1/2 of general level in soil.