|
| 氯虫苯甲酰胺和毒死蜱在水稻中的分布降解研究 |
| Distribution and degradation of chlorantraniliprole and chlorpyrifos in rice |
| 投稿时间：2017-12-14 |
| DOI：10.13254/j.jare.2017.0323 |
| 中文关键词: 水稻，农药，残留，分布，LS-MS |
| 英文关键词: rice, pesticide, residue, distribution, LC-MS |
| 基金项目:国家农产品质量安全风险评估项目（GJFP2016001001）；中央级公益性科研院所基本科研业务费专项资金项目（2014RG006）；国家水稻产业技术体系（CARS-01-47） |
| 作者 | 单位 | E-mail | | 杨欢 | 中国水稻研究所农业部稻米及制品质量监督检验测试中心, 农业部稻米产品质量安全风险评估实验室, 杭州 310006 | | | 马有宁 | 中国水稻研究所农业部稻米及制品质量监督检验测试中心, 农业部稻米产品质量安全风险评估实验室, 杭州 310006 | | | 秦美玲 | 中国水稻研究所农业部稻米及制品质量监督检验测试中心, 农业部稻米产品质量安全风险评估实验室, 杭州 310006 | | | 柴爽爽 | 中国水稻研究所农业部稻米及制品质量监督检验测试中心, 农业部稻米产品质量安全风险评估实验室, 杭州 310006 | | | 何巧 | 中国水稻研究所农业部稻米及制品质量监督检验测试中心, 农业部稻米产品质量安全风险评估实验室, 杭州 310006 | | | 张涵彤 | 中国水稻研究所农业部稻米及制品质量监督检验测试中心, 农业部稻米产品质量安全风险评估实验室, 杭州 310006 | | | 陈铭学 | 中国水稻研究所农业部稻米及制品质量监督检验测试中心, 农业部稻米产品质量安全风险评估实验室, 杭州 310006 | cmingxue@163.com |
|
| 摘要点击次数: 2113 |
| 全文下载次数: 1749 |
| 中文摘要: |
| 本研究采用LC-MS检测技术，系统研究了氯虫苯甲酰胺和毒死蜱及其代谢物（3，5，6-TCP）在两种水稻各器官的动态消解规律与分布特征，旨在为两种农药的科学合理使用及后期稻米安全风险评估提供科学依据。在穗期施药后定期分析水稻各器官中农药及代谢物的残留量，结果表明两种农药及代谢物在水稻甬优各器官中的残留量高于中浙优，在水稻中的残留量均呈叶 > 籽粒 > 茎 > 根的分布规律，根中呈先上升后下降的变化趋势，茎、叶和籽粒中的残留量随施药时间的延长逐渐减小；毒死蜱在水稻各器官降解速率较快，在施药后14 d降解率达99%以上；稻壳和糠承载90%左右农药及代谢物残留；高剂量施药使两种农药及代谢物在籽粒各部位的含量增高，但对其分布特征无影响。研究表明选择种植水稻品种中浙优的同时降低施药剂量既可达到防治效果也能降低稻米食用风险。 |
| 英文摘要: |
| In order to provide scientific basis for scientific and rational use of the two pesticides and the rice risk assessment in the later period, the dynamic digestion and distribution of chlorantraniliprole and chlorpyrifos and metabolite(3,5,6-TCP) in different organs of the rice by LC-MS were systematically studied. The residues of pesticides and metabolite in rice organs were determined periodically after application treatments at heading date. The results showed that the residues of two pesticides and metabolite in Yongyou were higher than that of Zhongzheyou, the distribution of two pesticides and metabolite in rice organs were leaf > grain > stem > root, and the residual amount in roots increased firstly and then decreased, while gradually reduced in the stem, leaf and grain prolonged with the time. The degradation rate of chlorpyrifos in rice organs was faster than that of chlorantraniliprole, with the rate more than 99% after 14 d application. The rice hull and bran were carrying about 90% two pesticides and metabolite residues, high doses of pesticides made the two pesticides and metabolite significantly increased in parts of the grain, but had no effect on the distribution characteristics of the two pesticides in the grain. Therefore, planting Zhongzheyou rice varieties with reducing application dose could achieve control effect and reduce rice consumption risk as well. |
| HTML
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
