越冬代亚洲玉米螟成虫发生动态及其与温度关系初探——以通辽市开鲁县为例

为明确亚洲玉米螟越冬代成虫发生动态及其与温度的关系,于2007-2016年利用频振式杀虫灯结合当地气象数据进行系统调查与分析。结果表明,自然条件下内蒙古通辽地区越冬代玉米螟成虫始见期在6月初(6月5日左右),高峰期在6月下旬(6月26日左右),终见期为7月中旬(7月14日左右),整个成虫期有效温度累积范围在150.0℃~750.0℃之间,高峰期集中在350.0℃~450.0℃的范围内。总的来看,越冬代成虫始见期与高峰期与吉林省中部地区大体相同,终见期稍晚于吉林中部地区但早于黑龙江哈尔滨地区。通辽与吉林中部地区越冬代成虫期(均40 d左右)约比黑龙江哈尔滨地区短10 d。可见,各地越冬代玉米螟成虫发生期的早晚和持续时间长短因地而异,同一地区受年份间的气温变化其也会出现差异。

Preliminary study on the occurrence dynamics of overwintering adults of Ostrinia furnacalis and its relations with temperature——Taking Kailu County of Tongliao City as an example

In order to clarify the occurrence dynamics of the overwintering adults of Asian corn borer(ACB), Ostrinia furnacalis(Guenée), and its relationship with temperature, systematic investigation and analysis were carried out in 2007-2016 using frequency-vibration pest-killing lamp combined with local meteorological data. The results showed that the initial period of overwintering adults of ACB was at the beginning of June(about June 5th);the peak period was at the end of June(around June 26th);the final period was in the middle of July(about July 14th) in Tongliao, Inner Mongolia under natural conditions. The range of accumulative effective temperature for overwintering generation adults of ACB was between 150.0℃ and 750.0℃ during the whole occurrence period. And it was mostly between 350.0℃ and 450.0℃ during the peak period. Overall, the initial and peak periods of ACB overwintering adults were basically the same as those in the central part of Jilin Province;and the final period was later than that in the central part of Jilin Province but earlier than that in Harbin area of Heilongjiang Province. The occurrence of ACB overwintering adult period was about 40 days in Tongliao and central Jilin, which was shorter about 10 days than that in Harbin area. So, that the sooner or later and period of occurrence of the ACB overwintering generation adults were varied from place to place. Even in the same place, they also changed due to changes of temperatures in different years.