黑龙江省中西部亚洲玉米螟的发生规律

The Occurrence Regularity of Ostrinia furnacalis in the Midwest of Heilongjiang Province

为指导黑龙江中西部地区的玉米螟综合防治,通过调查玉米秸秆垛中越冬代亚洲玉米螟的化蛹、羽化进度,田间落卵和卵的孵化进度以及幼虫发生情况,明确了黑龙江省中西部(大庆)地区亚洲玉米螟蛹和卵的始见期、始盛期、高峰期、盛末期和终见期及幼虫的发生规律。大庆地区玉米螟一年发生一代,化蛹高峰期出现在7月3日,羽化高峰期为7月11日,落卵高峰期为7月23日。

In order to direct the comprehensive prevention and control of Ostrinia furnacal in the midwest of Heilongjiang province,according to the investigation of pupation rate and eclosion progress,field oviposition,egg hatching progress and the happening of larvae of Ostrinia furnacalis,overwintering generation in the piles of maize stalks in the midwest（Daqing city）of Heilongjiang province,a conclusion was reached on the appearing stage,initial peak stage,peak stage,ending peak stage,disappearing stage and the occurrence rules of larvae during the pupation of the overwintering generation.The occurrence regularity of Ostrinia furnacalis has one generation a year in Daqing city,the pupation peak appeared in July 3rd,eclosion peak appeared in July 11thand oviposition peak appeared in July 23rd.