摘要
[目的]了解氯虫苯甲酰胺在水稻植株中的内吸传导特性,为其在田间科学合理用药提供参考。[方法]通过水培法、灌根法和喷雾法处理水稻植株后,使用超高效液相色谱串联高分辨质谱(UPLC-HRMS)分别测定3种不同处理方式下氯虫苯甲酰胺在根、茎、叶中的含量,以期探明其在水稻植株各部位的分布情况。[结果]采用水培法处理植株根部时,6 h后即可在植株各部位检测到目标药剂,并且植株各部位的含量随着采样时间的延长而不断增加。灌根法处理植株根部时,6 h后也在各部位检测到氯虫苯甲酰胺,其中茎部和叶部的含量也随着采样时间的延长总体呈现增长趋势。而喷雾法处理植株叶片时,在根部均未检测出目标药剂,并且茎部的总体含量较水培法和灌根法小。[结论]试验结果表明氯虫苯甲酰胺在水稻植株中具有较好的向上吸收传导性能,该项研究有助于指导氯虫苯甲酰胺在防治水稻害虫方面的科学合理用药。
[Aims] The purpose of this study was to explore the systemic properties of chlorantraniliprole in rice plant and to provide a reference for the rational use of chlorantraniliprole in the field. [Methods] After the rice plants were treated by hydroponics, root-irrigating and spraying, respectively, and the contents of chlorantraniliprole in root, stem and leaf were measured by UPLC-HRMS to detect the distribution of chlorantraniliprole in various parts of rice plant. [Results] Chlorantraniliprole was detected in the stem and leaf of the plant after 6 h of the roots were treated by hydroponics, and the content in each part of plant increased with the extension of sampling time. Chlorantraniliprole was detected in all parts of plant after 6 h of the plants were treated by root-irrigating, and the contents in stems and leaves were also found to present the overall growth trend with the increase of sampling time. After the leaves were treated by spraying, chlorantraniliprole was not detected in the roots, and the total contents in the stem were smaller than that of experiments treated by hydroponics and root-irrigating. [Conclusions] The results showed chlorantraniliprole has outstanding upward transmission properties in rice plants, which is helpful to guide a reference for the rational use of chlorantraniliprole in the field.
出处
《农药》
CAS
CSCD
北大核心
2017年第3期176-179,共4页
Agrochemicals
基金
国家自然科学基金项目(21367007)
贵州大学研究生创新基金资助项目(研理工2016073)
