论文部分内容阅读
2006-2009年,用稻茎浸渍法连续监测了广西南宁市、广东阳江市、湖南东安县、福建福清市、江西上高县、湖北孝感市、浙江金华市、江苏通州市和安徽和县共9个地区褐飞虱种群对吡虫啉、噻嗪酮和氟虫腈的抗性变化。结果表明:褐飞虱种群对吡虫啉的抗性仍处于高水平至极高水平抗性阶段(105.5～459.7倍),但2009年监测到东安、孝感、上高种群对吡虫啉的抗性已有下降趋势;褐飞虱种群对氟虫腈的抗性有增长趋势,2006到2009年褐飞虱种群对氟虫腈由敏感至低水平抗性(<6.9倍)发展到了中水平至高水平抗性(13.5～43.3倍);由于2005年吡虫啉在高抗地区的禁用,褐飞虱种群对噻嗪酮的抗性上升速度加快,2009年已处于低水平至中水平抗性阶段(7.0～14.4倍)。这表明在吡虫啉、氟虫腈被禁用后,大面积单一使用噻嗪酮进行防治,褐飞虱对噻嗪酮的抗性有可能加速发展。
In 2006-2009, Nanning, Guangdong Province, Yangjiang City, Guangdong Province, Dongan County, Hunan Province, Fuqing City, Shanggao County, Jiangxi Province, Xiaogan City, Hubei Province, Jinhua City, Zhejiang Province, Tongzhou City, Anhui Province and Anhui County were continuously monitored by rice stem dipping method Resistance changes of the population of BPH to imidacloprid, buprofezin and fipronil in nine areas. The results showed that the resistance of imidacloprid to the imidacloprid population was still high (105.5-459.7 times), but the resistance to imidacloprid in Dongan, Xiaogan and Shanggao populations was decreased in 2009; Population resistance to fipronil had a tendency to increase. From 2006 to 2009, the BPH population developed moderate to high level resistance (13.5-43.3-fold) to fipronil susceptibility to low level resistance (<6.9-fold) In 2005, imidacloprid was banned in high-resistance areas. The rate of resistance to buprofezin in the Nilaparvata lugens population increased at a low level to mid-level resistance (7.0 to 14.4 times) in 2009. This indicates that after imidacloprid and fipronil were banned, the use of buprofezin alone for large-scale control could increase the resistance of BPH to buprofezin.