人工模拟降雨对吡虫啉在不结球白菜中残留量的影响

秦丽; 尚子帅; 刘菲菲; 桂文君; 朱国念

人工模拟降雨对吡虫啉在不结球白菜中残留量的影响

1.
浙江大学农药与环境毒理研究所,杭州 310029
2.
杭州市余杭区农产品质量安全检验检测站,杭州 311100

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出版历程
- 收稿日期: 2012-08-27
- 修回日期: 2012-10-17

Effect of simulated rainfall for residues of imidacloprid in Brassica rapa L.Chinensis Group

1.
Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310029, China
2.
Station for Agricultural Quality and Safety Inspection of Hangzhou City Yuhang District, Hangzhou 311100, China

摘要

摘要: 为探索露地蔬菜中残留农药降解较快的主要原因,以吡虫啉为供试农药,以不结球白菜(Brassica rapa L.Chinensis Group.,俗称小白菜)为代表作物,采用人工模拟降雨研究了不同降雨强度、降雨间隔、降雨次数及农药剂型对吡虫啉在蔬菜中残留量的影响。结果表明:吡虫啉在小白菜中的残留量随着降雨强度的增大而降低,随着降雨间隔时间的延长而升高,随着降雨次数的增多而降低,且连续降雨对吡虫啉的淋失作用大于间断降雨;降雨对小白菜上吡虫啉水分散粒剂的淋洗率高于对乳油的淋洗率。
- 模拟降雨 /
- 降雨强度 /
- 降雨间隔 /
- 吡虫啉 /
- 小白菜 /
- 残留
Abstract: In order to explore the main reason of quickly degradation for pesticides in field vegetables,the study of imidacloprid was carried out to research the differences of the residue in Brassica rapa L.Chinensis Group.under different simulated rainfall intensity,rainfall interval and different pesticide formulations of several conditions.The results showed that the residues of imidacloprid in B.rapa reduced gradually along with the increase of rainfall intensity,increased accordance with the rainfall interval,reduced with the increasing of rainfall frequency,and the effect of continuous rainfall on leaching of imidacloprid was larger than intermittent rainfall.Meanwhile,the residuesof imidacloprid were different in two different pesticide formulations,the leaching rate of rainfall for WP was higher than EC.
- simulated rainfall /
- rainfall intensity /
- rain interval /
- imidacloprid /
- Brassica rapa L.Chinensis Group /
- residue

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参考文献(12)

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