Cheng Ling
2009
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Journal
Journal of Anhui Agricultural Sciences
Abstract
[Objective] The research aimed to study the residue dynamics of bensulfuron-methyl in soil of waterlogged-land area in Jianghan Plain,provide theoretical instruction for reasonable application of bensulfuron-methyl and pollution abatement in the environment and scientific basis for correct evaluation on the monitoring and transfer of bensulfuron-methyl in the environment and the soil remediation.[Method] The residue of bensulfuron-methyl in soil of waterlogged-land area in Jianghan Plain was determined by using HPLC.[Result] The results showed that the degradation of bensulfuron-methyl in 6 typical soil series of waterlogged land in Jianghan Plain showed certain change laws.In the soil of Jianghan series without water-logging disaster and Wanquan series with the most serious water-logging disaster,the degradation half-life time was higher than 4 other soil series.In the rice field soil of the 6 soil series,the degradation halflife time respective was 37 d in Jianghan series,16.5 d in Gaochang series,14.9 d in Four-lake series,17.8 d in Henggouxiang series,19.7 d in Guangyindang series,and 42 d in Wanquan series.[Conclusion] The increase of organic matter in soil,the increase of water content,the temperature increase and acid soil are beneficial to the degradation of bensulfuron-methyl.The physical and chemical prosperities were the main causes.