%0 Journal Article
%T Biodegradation potentiality of metsulfuron-methyl in acclimated wheat rhizospheric soil<br>驯化小麦根际土壤中甲磺隆生物降解潜力研究
%A FANG Cheng-ran
%A HE Yong-hua
%A LONG Yu-yang
%A QIAO Hua
%A SHEN Dong-sheng
%A <br>方程冉
%A 贺永华
%A 龙於洋
%A 谯华
%A 沈东升
%J 浙江大学学报(农业与生命科学版)
%D 2008
%I Zhejiang University Press
%X The degradation of metsulfuron-methyl in different soils,including acclimated and/or original wheat soil,rhizospheric and/or non-rhizospheric soil,was investigated by determining its residual concentration with HPLC.The results show that the degradation dynamics of metsulfuron-methyl in soil fitted to the first order reaction kinetics,the degradation rate constant was about 0.037-0.020 d-1 and the half life was about 18.7-34.7 d.The soil,which had been planted wheat previously,promoted the degradation of metsulfuron-methyl significantly.The difference of degradation rate constant between the rhizospheric and non-rhizospheric soil was significant at the 0.05 probability level.The biodegradability of microbe was enhanced by domestication.On the 20th day,the removal rate of metsulfuron-methyl in the domesticated soil was higher 6 to 12 percent than that without domestication.Furthermore,the low concentration of metsulfuron-methyl was benefit for its degradation,the degradation rate constant of metsulfuron-methyl increased with its concentration reducing.The result above provides a theoretical feasibility for accelerating the degradation of the sulfonylurea herbicides in plant rhizospheric soil.
%K metsulfuron-methyl
%K rhizospheric soil
%K degradation
%K domestication<br>甲磺隆
%K 根际土壤
%K 降解
%K 驯化
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=298920A27C9BAA22346FCA384240FAA4&jid=466C05D88593309B3EB5CF34361E6426&aid=BE42A44CB2A5361F6CBF9E647A1E27CF&yid=67289AFF6305E306&vid=339D79302DF62549&iid=94C357A881DFC066&sid=CD26609C367AC9C8&eid=C7461453A367FC85&journal_id=1008-9209&journal_name=浙江大学学报(农业与生命科学版)&referenced_num=0&reference_num=14