| 40%辛硫磷乳油在油菜和土壤中的残留及消解动态研究 |
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| 引用本文： | 马妍,李薇,仇少萍,李莉,赵建庄.40%辛硫磷乳油在油菜和土壤中的残留及消解动态研究[J].中国农学通报,2009,25(9):228-231. |
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| 作者姓名： | 马妍 李薇 仇少萍 李莉 赵建庄 |
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| 作者单位： | 1. 北京农学院,北京,102206
2. 中国科学院动物研究所,北京,100101 |
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| 基金项目： | 农业部农药登记残留试验项目 |
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| 摘 要： | 摘要：本文建立了辛硫磷在油菜和土壤中的残留分析方法，研究了40%辛硫磷乳油在油菜和土壤中的消解动态和最终残留。辛硫磷最小检出量为3.125?10-11g，最低检出浓度为0.01mg/kg。土壤中的平均回收率为95%~107%，相对标准偏差2.31%~5.96%；油菜平均回收率为88%~93%，相对标准偏差4.63%-9.90%。试验结果表明，辛硫磷在油菜和土壤中易降解，北京油菜、土壤的半衰期分别为0.4d和1.2d，山东油菜、土壤的半衰期分别为0.3d和1.7d。在油菜生长期，使用辛硫磷540和810 g a.i./hm2分别施药3次和4次，最后1次施药距采收间隔期为3 d、7 d、14 d。
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| 关 键 词： | 复合保水剂 复合保水剂 吸水倍率 腐殖酸钠 膨润土 |
| 收稿时间： | 2009-02-16 |
| 修稿时间： | 2009-03-16 |
Research on Residues and Degradation Dynamics of Phoxim 40%EC in Cole and Soils |
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| ma yan.Research on Residues and Degradation Dynamics of Phoxim 40%EC in Cole and Soils[J].Chinese Agricultural Science Bulletin,2009,25(9):228-231. |
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| Authors: | ma yan |
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| Institution: | Ma Yan, Li Wei, Qiu Shaoping, Li Li, Zhao Jianzhuang (1Beijing Agricultural College, Beijing 102206;2Institute of Zoology, Chinese Academy of Sciences, Beijing 100101) |
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| Abstract: | The analytical method of phoxim in cole and soil samples, and the dissipation residue in cole and soil were studied. The limits of quantification and detection of phoxim and 0.01 mg/kg, respectively. The recovery of soil fortified samples ranged from 95% to of 40% phoxim EC were 3.125×10^-11 g 107% with relative standard deviation of 2.31% to 5.96%, and cole fortified samples ranged from 88% to 93% with relative standard deviation of 4,63% to 9.90%. Halflife of phoxim in cole and soil was 0.3 d to 0.4 d and 1.2 d to 1.7 d, respectively. Cole was treated for 3 or 4 times with two concentrations, and at 7d, 14 d, and 21 d before harvest. |
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| Keywords: | phoxim cole soil residue degradation dynamics |
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