为明确5种阿维菌素·氟吡菌酰胺复配制剂以及2种单剂阿维菌素和氟吡菌酰胺对温室黄瓜根结线虫的防治潜力,本文采用春季温室黄瓜灌根方式施用7种杀线虫剂单因素随机区组试验,研究了施药后30 d和60 d的黄瓜根结线虫发病株率、病情指...为明确5种阿维菌素·氟吡菌酰胺复配制剂以及2种单剂阿维菌素和氟吡菌酰胺对温室黄瓜根结线虫的防治潜力,本文采用春季温室黄瓜灌根方式施用7种杀线虫剂单因素随机区组试验,研究了施药后30 d和60 d的黄瓜根结线虫发病株率、病情指数、防效以及收获的黄瓜总产量。结果表明:与空白对照相比,7种杀线虫剂对黄瓜根结线虫均有较好的防效,药后30 d的防效为67.00%~81.08%,药后60 d的防效为70.94%~88.66%,增产率为29.42%~54.68%。本试验为5种阿维菌素·氟吡菌酰胺复配制剂在施药时间、施药方式、剂型等方面防控根结线虫提供了理论支撑。In order to determine the control potential of five compound formulations of abamectin and fluopyram and two single nematicides of abamectin and fluopyram against green-house cucumber root-knot nematodes, this paper used a single-factor randomized block experiment to study the diseased plant rate, disease index and control effect, as well as the harvested total cucumber yield of seven nematicides on the green-house cucumbers after the root irrigation of 30 d and 60 d in spring. The results showed that compared with the blank control, seven nematicides had a good control effect on cucumber root-knot nematode and the control effects of the root irrigation of 30 d and 60 d were 67.00%~81.08% and 70.94%~88.66%, respectively. And the total yield increase rate was 29.42%~54.68%. This study provides atheoretical support for five compound formulations of abamectin and fluopyram to control root-knot nematode in terms of application time, application method and dosage form.展开更多
该研究建立了一种QuEChERS净化结合超高效液相色谱串联质谱法(ultra performance liquid chromatography tandem mass spectrometry,UPLC-MS/MS)快速测定动物源性食品中溴虫氟苯双酰胺残留量的分析方法。样品使用QuEChERS吸附净化,经含0...该研究建立了一种QuEChERS净化结合超高效液相色谱串联质谱法(ultra performance liquid chromatography tandem mass spectrometry,UPLC-MS/MS)快速测定动物源性食品中溴虫氟苯双酰胺残留量的分析方法。样品使用QuEChERS吸附净化,经含0.1%(体积分数)甲酸的乙腈提取,MgSO_(4)、C18及N-丙基乙二胺净化,净化液离心后过膜上机测定。UPLC-MS/MS法以乙腈和5 mmol/L乙酸铵(含体积分数0.1%甲酸)水溶液为流动相,以0.300 mL/min的流速进行梯度洗脱,使用ACQUITY UPLC BEH C18色谱柱进行分离,电喷雾离子源正离子模式电离,多反应监测模式检测,基质匹配标准曲线外标法定量。结果表明:溴虫氟苯双酰胺在0.200~100μg/L范围内呈良好线性,相关系数(R^(2))均大于0.999,方法的定量限为0.5~1.0μg/kg;以动物源性食品为基质,在低中高(2.0、10.0和50.0μg/kg)添加水平下,溴虫氟苯双酰胺的平均加标回收率为93.9%~102%,相对标准偏差为2.25%~5.86%。该方法便于操作,实验过程短,检测准确性高,可以填补动物源性食品中溴虫氟苯双酰胺的检测方法的空白,并可为动物源性食品中溴虫氟苯双酰胺农药残留限量值的制定提供技术支撑。展开更多
文摘为明确5种阿维菌素·氟吡菌酰胺复配制剂以及2种单剂阿维菌素和氟吡菌酰胺对温室黄瓜根结线虫的防治潜力,本文采用春季温室黄瓜灌根方式施用7种杀线虫剂单因素随机区组试验,研究了施药后30 d和60 d的黄瓜根结线虫发病株率、病情指数、防效以及收获的黄瓜总产量。结果表明:与空白对照相比,7种杀线虫剂对黄瓜根结线虫均有较好的防效,药后30 d的防效为67.00%~81.08%,药后60 d的防效为70.94%~88.66%,增产率为29.42%~54.68%。本试验为5种阿维菌素·氟吡菌酰胺复配制剂在施药时间、施药方式、剂型等方面防控根结线虫提供了理论支撑。In order to determine the control potential of five compound formulations of abamectin and fluopyram and two single nematicides of abamectin and fluopyram against green-house cucumber root-knot nematodes, this paper used a single-factor randomized block experiment to study the diseased plant rate, disease index and control effect, as well as the harvested total cucumber yield of seven nematicides on the green-house cucumbers after the root irrigation of 30 d and 60 d in spring. The results showed that compared with the blank control, seven nematicides had a good control effect on cucumber root-knot nematode and the control effects of the root irrigation of 30 d and 60 d were 67.00%~81.08% and 70.94%~88.66%, respectively. And the total yield increase rate was 29.42%~54.68%. This study provides atheoretical support for five compound formulations of abamectin and fluopyram to control root-knot nematode in terms of application time, application method and dosage form.