| 48%毒死蜱乳油在杭白菊和土壤中的消解动态 |
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| 引用本文： | 崔旭,赵静,吴加伦,闻玉田.48%毒死蜱乳油在杭白菊和土壤中的消解动态[J].农药学学报,2014,16(2):159-164. |
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| 作者姓名： | 崔旭 赵静 吴加伦 闻玉田 |
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| 作者单位： | 1.农业部植物病原及昆虫分子生物学重点实验室/浙江大学 农药与环境毒理研究所, 杭州 310058 |
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| 摘 要： | 通过田间植株直接施药-定期采样-样品提取净化-气相色谱分析的方法,研究了48%毒死蜱乳油中毒死蜱在杭白菊胎菊和土壤中的消解动态,并在室内探讨了不同温度对干胎菊中毒死蜱消解的影响。结果表明:在有效成分0.48和0.72 kg/hm22个施药剂量下,毒死蜱在杭白菊土壤和鲜胎菊中的消解半衰期分别为9.24~10.82 d和2.94~4.22 d;不同温度下,干胎菊中毒死蜱的半衰期在12.64~27.39 d之间,存在显著性差异(P0.05),其消解速率随温度升高而加快;在杭白菊上分别以有效成分0.48 kg/hm2(推荐高剂量)和0.72 kg/hm2(1.5倍推荐高剂量)的剂量喷雾施药2次,距末次施药后21 d时,毒死蜱在干胎菊中的残留量分别为0.58和0.89 mg/kg,均低于我国制定的毒死蜱在茶叶中的最大残留限量(MRL)标准(1 mg/kg)。
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| 关 键 词： | 毒死蜱 杭白菊 胎菊 土壤 残留 消解动态 |
| 收稿时间： | 1/3/2014 12:00:00 AM |
| 修稿时间： | 3/1/2014 12:00:00 AM |
Residual dissipation behavior of chlorpyrifos 480 EC in chrysanthemum flower and soil |
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| CUI Xu,ZHAO Jing,WU Jialun and WEN Yutian.Residual dissipation behavior of chlorpyrifos 480 EC in chrysanthemum flower and soil[J].Chinese Journal of Pesticide Science,2014,16(2):159-164. |
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| Authors: | CUI Xu ZHAO Jing WU Jialun and WEN Yutian |
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| Institution: | 1.Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310058, China2.The Agricultural Economy Service Center of Fengming Street, Jiaxing 314505, Zhejiang Province, China |
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| Abstract: | The residue decline dynamics were investigated in field at two different application concentrations by spraying chlorpyrifos 480 EC in Chrysanthemum morifolium and soil.The impact of different temperature on chlorpyrifos decline in dry chrysanthemum bud was studied. The results showed that when sprayed at the concentration of 0.48 and 0.72 kg/hm2, the half-lives were 9.24-10.82 days in soil and 2.94-4.22 days in bud. There were significant differences between different temperatures in half-lives in dried chrysanthemums. When 0.48 kg/hm2 and 0.72 kg/hm2 chlorpyrifos were sprayed twice a season, the final residues of chlopyrifos at 21 days after last application in dry chrysanthemum bud were 0.58 and 0.89 mg/kg, which were below the national MRL of chlorpyrifos on tea (1 mg/kg). |
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| Keywords: | chlopyrifos Chrysanthemum morifolium chrysanthemum bud soil residue decline dynamics |
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