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当前位置: 首页 > 文章 > 25%异丙威·毒死蜱乳油在稻米和土壤中的最终残留测定 河南农业科学 2015,44 (10) 104-108
Position: Home > Articles > Final Residue of 25% Isoprocarb and Chlorpyrifos EC in Rice and Soil Journal of Henan Agricultural Sciences 2015,44 (10) 104-108

25%异丙威·毒死蜱乳油在稻米和土壤中的最终残留测定

作  者：
常虹;陈妍
单  位：
商丘职业技术学院
关键词：
异丙威;毒死蜱;稻米;土壤;最终残留
摘  要：
为全面准确地评价25%异丙威·毒死蜱乳油在水稻上使用后的生态环境安全性,指导其科学合理使用,借助GC-NPD检测技术,通过田间试验研究异丙威和毒死蜱在稻米和土壤中的最终残留。2010年和2011年在贵阳、长沙和天津3地进行的田间残留试验结果表明,在水稻生长期按推荐用药剂量和1.5倍推荐剂量喷施25%异丙威·毒死蜱乳油3~4次,末次用药33 d后,异丙威在稻米中的残留量≤0.049 mg/kg,低于我国规定的最大残留限量(MRL)0.20 mg/kg,土壤中未检测到异丙威残留;毒死蜱在稻米中的残留量≤0.038 mg/kg,土壤中的残留量≤0.054 mg/kg,均低于我国规定的最大残留限量0.10 mg/kg。建议采用25%异丙威·毒死蜱乳油防治水稻二化螟时,有效成分最高用量0.27 g/m2,最多施药4次,安全间隔期为33 d。
译  名：
Final Residue of 25% Isoprocarb and Chlorpyrifos EC in Rice and Soil
作  者：
CHANG Hong;CHEN Yan;Shangqiu Polytechnic;
关键词：
isoprocarb;;chlorpyrifos;;rice;;soil;;residue
摘  要：
In order to assess the ecological environment safety of 25% isoprocarb and chlorpyrifos EC comprehensively after it was applied in paddy and to guide the use of 25% isoprocarb and chlorpyrifos EC scientifically and reasonably,this research conducted a field experiment to detect the pesticide residues of isoprocarb and chlorpyrifos in rice and soil,using the measurement technique of GC-NPD. The residues of25% isoprocarb and chlorpyrifos EC in the trials in Guiyang,Changsha and Tianjin cities were investigated in the years of 2010 and 2011. The results showed that spraying 25% isoprocarb and chlorpyrifos EC for three to four times according to the conventional dosage and high dosage( 1. 5 times the conventional dosage) in the rice growing period,after 33 d,the residues of isoprocarb were≤0. 049 mg / kg in rice and were not detected in the soil. They were both below the maximum residue limit of 0. 20 mg / kg set in China. The residues of chlorpyrifos were ≤0. 038 mg / kg in rice,and ≤0. 054 mg / kg in soil. They were both below the maximum residue limit of 0. 10 mg / kg. These suggest that 25% isoprocarb and chlorpyrifos EC could be used in rice filed safely when the dosage is below 0. 27 g / m2,and the spray frequency should not be more than four times,with the preharvest interval( PHI) of 33 d.

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