机构地区:[1]北京市农林科学院植物保护研究所·农业农村部北方果蔬有害生物绿色防控重点实验室(部省共建)·北方果树病虫害绿色防控北京市重点实验室,北京100097 [2]山东省诸城市农业技术推广中心,山东诸城262200
出 处:《果树学报》2024年第9期1836-1845,共10页Journal of Fruit Science
基 金:国家桃产业技术体系(CARS-30);国家重点研发计划(2022YFD2000100)。
摘 要:【目的】评估桃蚜Myzus persicae和桃粉蚜Hyalopterus amygdali种群对两种常用杀虫剂吡虫啉和双丙环虫酯的敏感性。【方法】2022年和2023年在我国不同桃产区桃园采集桃蚜和桃粉蚜种群,利用玻璃管药膜法测定了两种蚜虫的毒力水平。【结果】2022年监测结果表明,浙江省嘉兴市的桃蚜种群对吡虫啉最敏感,LC50为0.222 mg·L^(-1),相比之下,河北省秦皇岛市、陕西省西安市和甘肃省兰州市的桃蚜种群表现出较低敏感性。2023年,浙江省杭州市的桃蚜种群对吡虫啉最敏感,LC50为1.574 mg·L^(-1)。对比两年的监测数据发现,山东省青岛市桃蚜对吡虫啉的敏感度变化不大,陕西省咸阳市桃蚜种群显示出对吡虫啉的敏感度降低的趋势。对于双丙环虫酯,2022年河北省秦皇岛市的桃蚜种群对双丙环虫酯最敏感,LC50为0.011 mg·L^(-1)。2023年,浙江省杭州市的桃蚜种群对双丙环虫酯最敏感,LC50为0.159 mg·L^(-1)。对比分析发现,甘肃省兰州市的桃蚜种群对双丙环虫酯的敏感度呈增加趋势。桃粉蚜的监测结果表明:云南省昆明市的桃粉蚜种群对吡虫啉和双丙环虫酯均表现出最高的敏感度,然而,河北省秦皇岛市和安徽省宿州市的桃粉蚜种群对吡虫啉的敏感度显著降低。【结论】不同地区和年份的桃蚜和桃粉蚜种群对吡虫啉表现出显著的敏感度差异。两种蚜虫对双丙环虫酯的敏感度差异不显著,均处于敏感水平。【Objective】Green peach aphid and peach mealy aphid are pests causing significant harm to peach trees and other crops worldwide.They primarily feed by sucking plant sap,resulting in leaf damage that affects the growth,development,and photosynthesis of peach trees.Simultaneously,they pose a threat to the health and yield of peach trees and other crops by transmitting viruses.Control of the peach aphids has traditionally relied on chemical methods.However,due to characteristics such as large population sizes,short life cycles,high reproduction rates,and strong migratory capabilities,these aphids have developed varying degrees of resistance to many commonly used insecticides.Therefore,monitoring the sensitivity of the peach aphids to common insecticides is particularly important.This not only helps in assessing the actual effectiveness of the pesticides but also enables timely adjustments in control strategies based on the degree of resistance development.By doing so,the emergence of resistance can be delayed or avoided,leading to more precise pest management measures and thus achieving sustainability in agriculture.The populations of Myzus persica and Hyalopterus amygdali were collected from peach orchards in different peach-producing areas in China during 2022 and 2023 to monitor the sensitivity to imidacloprid and afidopyropen.【Methods】The toxicity levels of these aphids to the insecticides were determined using the glass tube film methods.The active pharmaceutical ingredient of imidacloprid and afidopyropen were diluted with acetone to prepare a master stock solution for subsequent experimentation.An aliquot of 250μL insecticide-acetone solution was applied to each tube(length:7.5 cm;diameter:1.2 cm,internal surface area:27.51 cm2),and they were immediately rotated using a micro-rotator(American Wheaton Company)until solutions were dried.These peach aphids were treated for each concentration with three replicates,while controls were treated with acetone only.The tubes were then placed under laboratory co
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