利用沙-土试管试验评价了产脲节杆菌Dn L1-1分别与小麦及苜蓿协同作用下对阿特拉津的降解。结果表明,菌株接种植物种子后能保护植物免受阿特拉津药害。该菌分别与小麦及苜蓿联合作用,30 d内对施加的阿特拉津的降解率分别达到99.7%~99.8%和70.2%~75.8%。试验结果表明,产脲节杆菌Dn L1-1与植物联合对阿特拉津有较强的降解能力。该菌通过拌种的方式施加到污染土壤中,是一种有前景的方法。 Sand-soil tube test was used to evaluate the degradation of atrazine by Drosophila ureas Dn L1-1 and wheat and alfalfa, respectively. The results showed that the inoculation of plant seeds can protect plants from atrazine toxicity. The bacteria were combined with wheat and alfalfa respectively, and the degradation rate of atrazine was 99.7% -99.8% and 70.2% -75.8% respectively within 30 days. The experimental results showed that the combination of Dn L1-1 with plant produces strong degradation ability to atrazine. The bacteria is applied by seed dressing to contaminated soil and is a promising method.