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采用扫网、目测观察和诱集调查方法对云南省昭通市北闸镇邓子村玉米田节肢动物进行了系统调查。调查结果表明:玉米田节肢动物共计11目56科101种,玉米蚜Rhopalosiphum maidis为害虫群落优势种。天敌优势种为异色瓢虫Leis axyridis、龟纹瓢虫Propylea japonica和烟蚜茧蜂Aphidius gifuensis Ashmaed。群落多样性指数、观察采集个体数和优势集中性指数在7月24日达到最高值。龟纹瓢虫种群数量的变化与玉米蚜种群数量的变化的关联性最高。天敌追随害虫的发生而发生,天敌和害虫在种群空间分布上具有同域性,可为保护利用天敌、合理防控玉米害虫提供理论依据。
The arthropods of corn field in Dengzi Village, Beizha Town, Zhaotong City, Yunnan Province, were systematically investigated by scanning, visual observation and trapping survey methods. The survey results showed that there were 101 species, 56 families and 101 species of arthropods in corn field. Rhopalosiphum maidis was the predominant pest community. The dominant species of natural enemies are Leis axyridis, Propylea japonica and Aphidius gifuensis Ashmaed. The community diversity index, the number of observed individuals and the dominant concentration index reached the highest value on July 24. The correlation between the population change of Propylaea japonica and the population change of Aphis gossypii was the highest. Natural enemies follow the occurrence of pests, and the natural enemies and pests have the same domain in the spatial distribution of populations, which may provide the theoretical basis for the protection and utilization of natural enemies and the prevention and control of corn pests.