| 油助剂和淀粉源助剂对噻嗪酮和烯啶虫胺在水稻上残留的影响 |
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| 引用本文： | 沈燕,朱宏,余向阳,刘贤金,张志勇.油助剂和淀粉源助剂对噻嗪酮和烯啶虫胺在水稻上残留的影响[J].农药学学报,2020,22(2):370-377. |
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| 作者姓名： | 沈燕 朱宏 余向阳 刘贤金 张志勇 |
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| 作者单位： | 江苏省食品质量安全重点实验室——省部共建国家重点实验室培育基地,南京 210014;农业农村部农产品质量安全控制技术与标准重点实验室,南京 210014;农业农村部农产品质量安全风险评估实验室 (南京),南京 210014;农业农村部农产品质量安全风险评估实验室 (南京),南京 210014;农业农村部农产品质量安全控制技术与标准重点实验室,南京 210014 |
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| 基金项目： | 国家重点研发计划重点项目 (2017YFD0200302)；国家自然科学基金项目 (31772198) |
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| 摘 要： | 为探究油助剂和淀粉源助剂对噻嗪酮和烯啶虫胺降解规律的影响,以水稻为试材,建立了噻嗪酮和烯啶虫胺在水稻不同部位残留的高效液相色谱-三重四极杆串联质谱测定方法,并采用该方法研究了两种农药在水稻不同部位的残留量变化和最终残留量。结果表明:在0.01(0.02)~0.5 mg/kg添加水平下,噻嗪酮在水稻穗部、植株、籽粒和稻壳中的平均回收率在89%~100%之间,相对标准偏差(RSD)为2.5%~7.2%;烯啶虫胺在水稻穗部、植株、籽粒和稻壳中的平均回收率在88%~99%之间,RSD为2.5%~13%。两种农药的定量限均为0.01~0.02 mg/kg。以70%烯啶·噻嗪酮水分散粒剂为供试药剂的残留消解动态试验结果表明,噻嗪酮和烯啶虫胺的残留量与施药后的间隔时间呈指数关系,消解动态符合一级反应动力学方程。在未添加助剂和添加淀粉源助剂及油助剂的3个处理中,噻嗪酮在水稻穗部的原始沉积量由大到小的顺序为:添加油助剂>添加淀粉源助剂>未添加助剂;半衰期长短顺序为:添加油助剂>添加淀粉源助剂>未添加助剂。至水稻收获时,在水稻籽粒和稻壳中均未检出噻嗪酮和烯啶虫胺,在水稻植株中噻嗪酮和烯啶虫胺的残留量均为<0.02~0.05 mg/kg。田间试验结果显示:施用70%烯啶·噻嗪酮水分散粒剂后14 d,添加油助剂或淀粉源助剂的处理对稻田灰飞虱Laodelphax striatellus的防治效果显著高于未添加助剂的。研究结果表明,添加助剂能不同程度地延长农药有效成分在水稻上的持留时间,从而有利于农药药效的持续发挥,而其最终残留量并不高,表明添加助剂在增加农药药效的同时,其残留的农药并不会对农产品造成污染。在供试的两种助剂中油助剂的增效效果好于淀粉源助剂。
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| 关 键 词： | 油助剂 淀粉源助剂 噻嗪酮 烯啶虫胺 水稻 农药残留 减施增效 |
| 收稿时间： | 2019-11-26 |
Effect of oil adjuvant and starch adjuvant on residues of buprofezin and nitenpyram in rice |
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| SHEN Yan,ZHU Hong,YU Xiangyang,LIU Xianjin,ZHANG Zhiyong.Effect of oil adjuvant and starch adjuvant on residues of buprofezin and nitenpyram in rice[J].Chinese Journal of Pesticide Science,2020,22(2):370-377. |
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| Authors: | SHEN Yan ZHU Hong YU Xiangyang LIU Xianjin ZHANG Zhiyong |
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| Institution: | 1.Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, China2.Key Laboratory of Control Technology and Standard for Agro-Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China3.Key Lab of Agro-Product Safety Risk Evaluation (Nanjing), Ministry of Agriculture and Rural Affairs, Nanjing 210014, China |
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| Abstract: | In order to investigate the effects of oil adjuvant and starch adjuvant,the residues of buprofezin and nitenpyram were studied using rice as the model plant.A QuEChERS-high performance liquid chromatography-tandem mass spectrometry(HPLC-MS/MS)method was developed to determine their dynamic contents in different parts of rice.Results showed that the recoveries of buprofezin in spike,plant,grain and hull of rice were in the range of 89%-100%,the relative standard deviation(RSD)ranged from 2.5%-7.2%and the quantitative limit(LOQ)ranged from 0.01 to 0.02 mg/kg.The recoveries of nitenpyram in spike,plant,grain and hull of rice were in the range of 88%-99%,the RSD ranged from 2.5%-13%and the quantitative limit(LOQ)ranged from 0.01 to 0.02 mg/kg.The degradation of buprofezin and nitenpyram in different parts of rice was fitted to a first-order reaction kinetic model.In terms of no addition of adjuvant,starch adjuvant,oil adjuvant treatments,the order of the initial deposit residues of buprofezin in spikes of rice were oil adjuvant>starch adjuvant>no adjuvant addition group and that in the half-life were oil adjuvant>starch adjuvant>no adjuvant addition group.In the harvest time of rice,the terminal residues of buprofezin and nitenpyram in grain and hull were undetected.The residue of buprofezin in plant was in the range of<0.02-0.05 mg/kg and that of nitenpyram was in the range of<0.02-0.05 mg/kg.The results of field tests of 70%buprofezin+nitenpyram WG against Laodelphax striatellus showed that the control effect of pesticides added with starch adjuvant or oil adjuvant were significantly higher than that with no adjuvant addition 14 days after treatments.The results showed that the adjuvant treatments could extend residue time of the active ingredient of pesticide in rice,which would benefit the lasting of the effect of pesticide.Meanwhile,the terminal residue was low.The effect of oil adjuvant was better than that of the starch adjuvant. |
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| Keywords: | oil adjuvant starch adjuvant buprofezin nitenpyram rice pesticide residue reducing application and improving efficiency |
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