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于2006-2008年采用稻茎浸渍法监测了我国主要水稻种植区大田褐飞虱种群对苯基吡唑类杀虫剂(氟虫腈)、新烟碱类及昆虫生长调节剂类杀虫剂(噻嗪酮)的抗性动态变化。结果表明,2008年褐飞虱对氟虫腈的抗性水平随其迁飞途径而出现急剧上升态势,其中,从我国南方稻区迁入长江中下游流域等6省10地种群和回迁至广东韶山、深圳两种群对氟虫腈抗性分别上升至中等水平抗性(15.0～32.5倍)和高水平抗性(66.9～73.7倍),明显高于2006年5省6地(2.6～5.8倍)和2007年9省11地(3.2～8.4倍)大田褐飞虱种群的抗性水平。上述结果预示2009年、2010年两年在全国稻区可能暴发褐飞虱对氟虫腈更高水平的抗性。自从2005年10-11月褐飞虱对新烟碱类的吡虫啉产生极高水平抗性(277～811倍)以来,近3年来抗性虽有一定程度下降,但仍处于高水平-极高水平抗性阶段,其中,2008年我国8省13地褐飞虱种群的抗性仍高达210.1～381.7倍。褐飞虱对其他的新烟碱类药剂噻虫嗪、烯啶虫胺和呋虫胺的抗性水平分别为2.0～15.8、0.7～4.8和0.6～2.8倍。褐飞虱对噻嗪酮为敏感到中等水平抗性(3.0～11.9倍)。近几年来大量、广泛使用氟虫腈防治褐飞虱和稻纵卷叶螟两类迁飞性害虫是褐飞虱对其暴发抗性的重要原因。因此,必须及时制定全国范围防治两类迁飞性害虫的交替轮换用药抗性治理对策方案,才能延缓褐飞虱抗性的再次暴发。
In 2006-2008, the rice stems immersion method was used to monitor the effects of the Nilaparvata lugens (BPH) population in the main rice planting areas on the activities of phenylpyrazole insecticides (Fipronil), neonicotinoids and insect growth regulators Aminazin). The results showed that the resistance of BPH to fipronil increased sharply with the migration of fipronil in 2008. Among them, 10 populations from 6 provinces in the middle and lower reaches of the Yangtze River migrated from the rice area in South China and migrated to Shaoshan in Guangdong Province. The fipronil resistance of the two populations in Shenzhen increased to moderate level (15.0-32.5 fold) and high level (66.9-73.7 fold) respectively, which was significantly higher than that of the six provinces (2.6-5.8 fold) in 2006 Resistance levels of brown planthopper populations in 11 provinces (3.2 ~ 8.4 times) in 9 provinces in 2007. The above results indicate that BPH may develop a higher level of resistance to fipronil in the rice paddies nationwide in 2009 and 2010. The resistance of Nilaparvata lugens to neonicotinoid imidacloprid (277-811 times) has been declining to some extent since October-November 2005, but it is still at a high level - extremely high level of resistance Sexuality stage, among them, in 2008, the resistance of the 13 BPH populations in 8 provinces in our country was as high as 210.1-381.7 times. The resistance levels of Nilaparvata lugens to other neonicotinoids thiamethoxam, nitenpyram and dinotefuran were 2.0 ~ 15.8, 0.7 ~ 4.8 and 0.6 ~ 2.8 times, respectively. Nilaparvata lugens was moderately resistant to buprofezin (3.0 to 11.9-fold). In recent years, a large number of widespread use of fipronil two kinds of migratory pests Nilaparvata lugens and rice leafroller Pest Nilaparvata liberi is an important cause of its outbreak resistance. Therefore, we must promptly formulate a nationwide program of measures for the prevention and control of two types of migratory pests with alternate rotation drug resistance measures to delay the resurgence of Nilaparvata lugens resistance.