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稻纵卷叶螟在青阳县通常一年发生4代,其中以三代最重,二代次之,少数年份在双晚上也发生较重。主要阐述了稻纵卷叶螟在青阳县发生情况,根据青阳县2004~2009年稻纵卷叶螟的调查资料,分析了2004~2009年连续6年稻纵卷叶螟发生为害的原因是大量迁入的虫源、优质而丰富的食料、化学农药施用不当、气候条件、耕作制度及农田生态平衡遭到破坏等方面,且指出了青阳县在稻纵卷叶螟防治对策中所使用的一些方法。
Cnaphalocrocis medinalis usually takes place in Qingyang County for 4 generations a year, of which the third generation is the heaviest, the second generation is second, followed by a few years in double nights. The paper mainly describes the occurrence of Cnaphalocrocis medinalis in Qingyang County. According to the survey data of Cnaphalocrocis medinalis from 2004 to 2009 in Qingyang County, the reasons for the occurrence of Cnaphalocrocis medinalis in successive 6 years from 2004 to 2009 were analyzed Is a large number of migratory insects, high-quality and abundant foodstuffs, improper application of chemical pesticides, climatic conditions, tillage system and ecological balance of farmland has been destroyed and so on, and pointed out that Qingyang County in the rice leafroller prevention and control measures in the Some methods to use.