%0 Journal Article %T Degradation of Carbendazim in Paddy Soil and the Influencing Factors
多菌灵在农田土壤中的降解及其影响因子研究 %A XIAO Wen-dan %A YANG Xiao-e %A LI Ting-qiang %A
肖文丹 %A 杨肖娥 %A 李廷强 %J 环境科学 %D 2012 %I %X The influences of microorganism, soil moisture and cadmium (Cd) on degradation of carbendazim in paddy soil were investigated with laboratory microcosm experiments. The results showed that the half-life of carbendazim (5.0 mg·kg-1and 10.0 mg·kg-1) in sterilized soils was 12.6-13.8 times of those in non-sterilized soils. The half-life of carbendazim was decreased by 32.1%-37.1% when the soils were inoculated with carbendazim-degrading strains. When the soil moisture was increased from 40% to 60% or 80% of water holding capacity, the half life of carbendazim was decreased by 46.2% or 74.0%, respectively. Low level of Cd (5 mg·kg-1) enhanced the degradation of carbendazim in soils with half-life time decreased by 32.1%-52.4%, but high level of Cd (50 mg·kg-1) inhibited the degradation of carbendazim in soils with half-life time increased by 92.6%-103.0%. For the soils inoculated with carbendazim-degrading strains, the half life of carbendazim was decreased by 34.0%-34.4% with the addition of low level of Cd (5.0 mg·kg-1), while the half life time was increased by 74.4%-109.4% with the addition of high level of Cd (50 mg·kg-1). The results demonstrate that indigenous microorganisms is a critical factor that influences carbendazim degradation in soils, and that carbendazim-degrading strains, high soil moisture and low Cd level enhance the degradation of carbendazim. %K carbendazim %K degradation %K carbendazim degrading bacteria %K soil moisture %K cadmium
多菌灵 %K 降解动态 %K 多菌灵降解菌 %K 土壤含水量 %K Cd %U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=4A820C74CDA0F61529CA1EB968F9685C&yid=99E9153A83D4CB11&vid=27746BCEEE58E9DC&iid=708DD6B15D2464E8&sid=91C272A55A90CFA7&eid=90F19EF8CC3416AF&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=33