
玉米田蚜虫种群的空间动态
Spatial dynamics of aphids in corn fields
白树雄** 张 聪 闫占峰 何康来 王振营***
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DOI:
作者单位:中国农业科学院植物保护研究所,植物病虫害生物学国家重点实验室,北京 100193
中文关键词:玉米蚜虫,玉米,空间分布型,聚集指标
英文关键词:corn aphids, maize, spatial distribution pattern, aggregation indices
中文摘要:
【目的】 明确我国黄淮海地区玉米蚜虫种类及其空间分布,掌握玉米蚜虫田间发生规律。【方法】 采用系统调查法于2009—2010年在河北廊坊对春玉米、夏玉米上玉米蚜虫种群的发生动态进行了研究。【结果】 结果表明,该地区取食为害玉米的蚜虫有5种;玉米蚜Rhopalosiphum maidis (Fitch)和禾谷缢管蚜R. padi (L.)混合发生,为玉米田蚜虫的优势种群。【结论】 几种蚜虫的混合种群在玉米田间的动态分布始终呈聚集分布;二项分布k和聚集型指标m*/判断表明,随着玉米的生长发育,玉米蚜虫表现扩散-聚集-再扩散-再聚集的趋势。
英文摘要: [Objectives] To clarify the species of corn aphids and their spatial dynamics in north Chinacornfields. [Methods] Systematic investigations of aphid population dynamics and spatial distribution patterns were carried out in cornfields in 2009-2010 inLangfang,HebeiProvince. [Results] Five species of aphids occurred in the cornfields; of which Rhopalosiphum maidis (Fitch) and R. padi (L) co-occurred and were the predominant species. [Conclution] Mixed aphid populations generally had an aggregated distribution on the corn plants but the degree of aggregation varied seasonally.