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【目的】为了明确吸虫塔对麦长管蚜Sitobion avenae(Fabricius)迁飞活动监测效果的影响因素。【方法】采用回归分析和通径分析等方法,分析田间麦长管蚜数量与吸虫塔吸捕量的相关性,分析不同气象因素对吸虫塔中麦蚜吸捕数量的影响程度。【结果】结果显示,吸虫塔的有翅蚜吸捕量与田间麦长管蚜种群密度及有翅蚜数量存在显著的相关性,即田间麦长管蚜有翅成蚜数量对吸虫塔的吸捕量具有直接影响,而吸虫塔中麦长管蚜的吸捕量也直接反映田间有翅成蚜及种群动态的实际情况。另外,在廊坊地区,吸虫塔初期监测到的有翅麦长管蚜要比小麦田间发生的早几天。通过对吸虫塔中麦长管蚜有翅成蚜吸捕量与气象因素灰色关联度分析的结果表明,降雨天气对麦长管蚜的迁飞和种群动态具有突出的影响作用,可以造成麦长管蚜有翅成蚜迁入的“突增”和种群的“骤降”;同时温度和湿度是两个影响麦长管蚜迁飞的重要因素;在麦长管蚜的迁入初期,温度对其迁飞影响最大;在大风天气,风速也会对麦长管蚜的迁入或飞翔活动产生较大影响。【结论】田间麦长管蚜发生数量与吸虫塔的吸捕量存在正相关;降雨、温度和风速是影响麦长管蚜迁飞活动的主要气象因素。
【Objective】 The objective of this study was to determine the influencing factors of monitoring results on the migration of Sitobion avenae (Fabricius). 【Method】 The correlation between the number of Aphis gossypii and the amount of trapped snakehead was analyzed by regression analysis and path analysis. The influence of different meteorological factors on the amount of trapped wheat aphid was analyzed. 【Result】 The results showed that there was a significant correlation between the population of winged aphids and the population density of winged aphid in the field and the number of winged aphids. The amount of catches has a direct impact, and the absorption of wheat aphid in the worm tower also directly reflects the actual situation of the winged aphids and the population dynamics in the field. In addition, in the Langfang area, the worm-trapped aphids detected earlier in the worm-trap tower were a few days earlier than the wheat fields. The results of gray relational analysis between the amount of captured aphid winged aphid and the meteorological factors in the worm tower showed that the rainfall weather had a prominent effect on the migration and population dynamics of the aphid, In addition, the temperature and the humidity are two important factors that affect the migration of wheat aphids; the migration of aphids in wheat In the initial stage, the temperature has the greatest impact on its migration; in windy days, the wind speed will also have a significant impact on the migration or flight activities of the wheat aphid. 【Conclusion】 There is a positive correlation between the occurrence of Aphis gossypii and the amount of trapped snakehead in the field. Rainfall, temperature and wind speed are the main meteorological factors that affect the migration of Aphis gossypii.