| 精甲霜灵在西红柿上的降解残留研究 |
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| 引用本文： | 韩丙军,汤建彪,彭黎旭,谢德芳,刘洪升.精甲霜灵在西红柿上的降解残留研究[J].热带农业科学,2009,29(1). |
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| 作者姓名： | 韩丙军 汤建彪 彭黎旭 谢德芳 刘洪升 |
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| 作者单位： | 中国热带农业科学院分析测试中心,海南海口,571101 |
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| 基金项目： | 海南省自然科学基金，海口市科技局项目 |
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| 摘 要： | 采用气相色谱法(氮磷检测器)测定精甲霜灵在西红柿果实上的残留量。结果表明,精甲霜灵在西红柿植株上施用以后降解较快;在西红柿果实上的消解遵循指数型降解规律,半衰期为1.74d;残留量与精甲霜灵施药量相关,残留浓度随着施药量增多而增高;施药4次处理与施药5次处理间无显著差异。以2倍试验农药厂家在西红柿上的推荐使用剂量(2248g/hm2)作施药处理,施药次数为5次,于最后1次施药2d后,精甲霜灵在西红柿果肉中的残留量为0.074mg/kg的分析结果表明,试验农药厂家推荐精甲霜灵在西红柿上施用的安全间隔期为3d是合适的。
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| 关 键 词： | 精甲霜灵 西红柿 气相色谱法 残留 降解 |
Residue and Degradation of Metalaxyl-M in Tomato |
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| HAN Bingjun,TANG dianbiao,PENG Lixu,XIE Defang,LIU Hongsheng.Residue and Degradation of Metalaxyl-M in Tomato[J].Chinese Journal of Tropical Agriculture,2009,29(1). |
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| Authors: | HAN Bingjun TANG dianbiao PENG Lixu XIE Defang LIU Hongsheng |
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| Institution: | Analysis and Testing Center;CATAS;Haikou;Hainan;China;571101 |
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| Abstract: | Field experiments were conducted to study residue and degradation of metalaxyl-M in tomato. Metalaxyl-M residues were quantified by GC-NPD. In Trial I,the metalaxyl-M degradation was detected after tomato was treated at the recommended dose level. In Trial II,effects of application rate and application times on the metalaxyl-M degradation in tomato. Metalaxyl-M degraded rapidly from tomato pulp after applied to the tomato plants,and its half-life was 1.74 d. When tomato plants were sprayed 5 times with the ... |
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| Keywords: | metalaxyl-M tomato gas chromatogram residue degradation |
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