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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (27): 262-266.doi: 10.11924/j.issn.1000-6850.casb15040055

• 植物保护 农药 • 上一篇    下一篇

降解菌N80对土壤中氯嘧磺隆降解效果的研究

胡 月,张浩   

  1. 吉林农业大学资源与环境学院农药室,吉林农业大学资源与环境学院农药室
  • 收稿日期:2015-04-07 修回日期:2015-08-25 接受日期:2015-06-23 出版日期:2015-09-23 发布日期:2015-09-23
  • 通讯作者: 张浩
  • 基金资助:
    吉林省世行贷款农产品质量安全项目 “项目名称” (2011-Z28)； 吉林省科技厅项目 “项目名称” (20120742)。

Degradation Effect of Degrading Bacterium N80 on Chlorimuron-ethyl in Soil

  • Received:2015-04-07 Revised:2015-08-25 Accepted:2015-06-23 Online:2015-09-23 Published:2015-09-23

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摘要： 以 N80为供试菌株， 研究了 N80对草甸黑土中氯嘧磺隆的降解能力， 并测定了 N80菌株的接种量、 底物氯嘧磺隆初始量、 土壤中的水分及土壤不同类型对氯嘧磺隆的降解效果。结果表明： 当底物的浓度为 20 mg/kg 时， 在灭菌草甸黑土中添加 N80 菌株 5×1014 CFU/g， N80 对底物氯嘧磺隆的降解率由32.5%增加到 87.7%， 而在没有灭菌的土壤中添加 N80菌株后， 底物氯嘧磺隆的降解率由 47.5%提高到94.4%。同时对不同性质的棕壤土和草甸黑土接种降解菌 N80， 第 30天测定棕壤土和草甸黑土中的氯嘧磺隆降解率分别为 49%、 87.5%。底物氯嘧磺隆含量 20 mg/kg、 N80接种量为 5×1014 CFU/g、 土壤水分含量30%时， 在草甸黑土中N80对氯嘧磺隆除草剂的降解效果较好。

关键词: 水稻, 水稻, 产量, 成因, 超高产生态区

Abstract: N80 was taken as the tested strain to study the degradation effect on chlorimuron-ethyl in meadow chernozemic soil. The effects of inoculum size of N80, initial dosage of the substrate chlorimuron-ethyl, soil moisture and types on the degradation of chlorimuron-ethyl were studied. The results showed that chlorimuronethyl degradation rate increased from 32.5% to 87.7% when the substrate concentration was 20 mg/kg and N80 5 × 1014 CFU/g was added into the sterilized meadow chernozemic soil. In contrast, chlorimuron- ethyl degradation rate increased from 47.5% to 94.4% in the non-sterilized soil when N80 was added. Meanwhile, the chlorimuron- ethyl degradation rates were 49% and 87.5% respectively in brown soil and meadow chernozemic soil after N80 was inoculated for 30 days. When the substrate chlorimuron-ethyl was 20 mg/kg with N80 inoculum size of 5×1014 CFU/g and soil moisture content of 30%, N80 had the best degradation effect on chlorimuron-ethyl herbicide in meadow chernozemic soil.