不同品种农药在小麦灌浆期防治蚜虫对籽粒残留的影响

Effect of Controlling Aphids on Grain Residues inWheat with Different Pesticide Varieties During Grain-filling Period

为了明确不同农药品种防治蚜虫对小麦籽粒的残留量,2017年—2019年在山西临汾采用大区对比法,开展了不同农药品种小麦灌浆期防治蚜虫对籽粒残留的影响研究,结果表明:灌浆期防治蚜虫,10%吡虫啉、6%联苯菊脂·啶虫脒、40%联苯菊酯、22%噻虫嗪在小麦籽粒中均有残留;而2.5%高效氯氟氰菊酯具有较好的降低残留效果,其在2个试验年度均未检出。该项研究可为绿色防控选择农药品种提供技术支撑。

In order to determine the residues of aphids controlled by different pesticide varieties on wheat grains,a regional comparison method is used to study the effects of aphids controlled by different pesticide varieties on wheat grain residues during wheat filling period from 2017 to 2019 in Linfen City.The results shows that:At the grain filling stage,10%imidacloprid,6%biphenthrin·acetamiprid,40%biphenthrin and 22%thiamethoxam are found in wheat grains.However,2.5%beta-cyhalothrin had a better residue reduction effect,which is not detected in the two experimental years.This study can provide technical support for the selection of pesticide varieties for green prevention and control.