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【目的】为了明确麦长管蚜Sitobion avenae(Fabricius)在时间和空间上的迁飞活动规律以及南北地区间的虫源关系。【方法】我们采用了一种新型的监测小型迁飞性害虫的工具——吸虫塔(Suction trap),对麦长管蚜的迁飞活动进行自动、实时监测。【结果】监测及分析结果表明,在小麦返青到成熟期间,吸虫塔中麦长管蚜的数量有多个高峰,但是有两个相对集中的时间段,即主要的迁入时期和迁出时期。在廊坊地区,每年4月末至5月初(抽穗到扬花期)迁入廊坊,5月下旬至6月初(小麦乳熟期)大量迁出廊坊。麦长管蚜的迁飞(或飞翔)活动具有昼夜节律,清晨、上午和傍晚是麦长管蚜迁飞活动的主要时间段,而在夜间其飞翔活动显著减少。利用HYSPLIT模型对麦长管蚜迁飞轨迹的分析结果显示,纬度低的地区蚜量高峰期早于纬度高的地区,其蚜量高峰日期具有明显的南北衔接特点。【结论】吸虫塔的监测证明了麦长管蚜在我国东部地区由南向北迁飞。
【Objective】 In order to clarify the temporal and spatial migration rules of Sitobion avenae (Fabricius) and the relationship between the northern and southern regions. [Method] We used a new type of Suction trap, a tool to monitor small migratory pests, for automatic and real-time monitoring of migratory aphid movements. 【Result】 The results of monitoring and analysis showed that there were several peaks in the number of T. gonorrhoeae during the period of returning to maturity in wheat, but there were two relatively concentrated periods of time, namely, the main period of moving in and the period of moving out . In Langfang, Langfang was relocated to Langfang from the end of April to the beginning of May each year (heading to flowering stage), and Langfang was relocated from late May to early June (milky stage of wheat). Aphis gossypii had a circadian rhythm of its fly (or fly) activity. Early morning, early morning and evening were the main periods for the migration of Aphis gossypii, while its flight activity was significantly reduced at night. Using HYSPLIT model to analyze the migration trajectory of Aphis gossypii, we found that the peak of aphids in the low latitude area is earlier than that in the high latitude area, and the date of aphid population peak has the obvious feature of north-south convergence. 【Conclusion】 The monitoring of the trematode tower proved that the aphid in the eastern part of our country migrated from south to north.