农药学学报2013，Vol.15Issue(1)：65-72,8.DOI:10.3969/j.issn.1008-7303.2013.01.09
菌核净在植烟土壤及烟叶中的消解动态
Decline dynamics of dimetachlone in tobacco-planted soils and tobacco leaves
摘要
Abstract
In order to explore residual contamination risk of dimetachlone, the decline dynamics of dimetachlone in tobacco and soil was investigated under field-simulated condition and field using gas chromatography. The results showed that the decline rate of dimetachlone in sterilized soil was 3. 5 times slower than in unsterilized soil, indicating that microorganism was a dominant factor affecting decline of dimetachlone in soil. Some factors including soil properties, temperature, water holding capacity, addition concentrations could also affected decline of dimetachlone in soil. The decline rate of dimetachlone in five kinds of tobacco-planted soils showed the following sequence; Huaxi soil> Qiannan soil > Kaili soil > Zunyi soil > Bijie soil. The decline rate of dimetachlone in soil increased with temperature and water holding capacity,but decreased with application doses. In the field,the half-life of dimetachlone in tobacco leaves and soil was 5. 8 and 8.2 d,respectively.关键词
土壤/烟叶/菌核净/残留/消解动态/影响因子Key words
soil/tobacco leaves/dimetachlone/residue/decline dynamic/influence factors分类
化学化工引用本文复制引用
吴小毛,李荣玉,李明,龙友华,胡安龙..菌核净在植烟土壤及烟叶中的消解动态[J].农药学学报,2013,15(1):65-72,8.基金项目
贵州省烟草专卖局科技项目专项[(2007)07] （2007）
贵阳市科技局科技特派员计划项目[筑科合同(2011207)01号] （2011207）
贵州省科学技术基金项目资助[黔科合J字(2010)2074] （2010）
贵州大学博士基金项目[贵大人基合字(2011)06号]. （2011）
