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2009～2011年对辽宁省受旱灾影响的北票市和受洪涝影响的铁岭市亚洲玉米螟发生危害情况进行调研,分析干旱和洪涝灾害对亚洲玉米螟种群动态的影响。结果表明,2009年6～9月持续干旱影响,受灾当年亚洲玉米螟种群数量大幅下降,第2年亚洲玉米螟心叶期危害较轻,但穗期危害较重,第3年种群数量恢复至较高水平;2010年7月下旬洪涝灾害发生条件下,亚洲玉米螟发生危害维持在较高水平,受灾年份越冬种群数量较大,但不能直接影响第2年亚洲玉米螟的发生。
From 2009 to 2011, we conducted a survey on the occurrence of the Asian corn borer affected by drought in Beipiao, Liaoning Province and Tieling, arid affected by floods, and analyzed the impacts of drought and floods on the population dynamics of the Asian corn borer. The results showed that from June to September 2009, the drought continued. The population of Asiatic corn borer (Piricolaria indica) was significantly reduced in the year of the disaster. In the second year, the Asiatic corn borer was less susceptible at the leafy stage, but had heavier damage at the heading stage. The population in the third year recovered to Higher level. In late July 2010, the occurrence of Asian corn borer was maintained at a high level under the condition of flood disasters, and the overwintering population in the affected years was relatively large, but it could not directly affect the occurrence of Asian corn borer in the second year.