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茄田和菜用大豆田烟粉虱成虫数量及空间格局动态差异

Acta Phytophylacica Sinica(2008)

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Abstract
运用随机抽样方法进行田间系统调查,并用t检验法、种群聚集强度指标及地统计学方法,对茄田和菜用大豆田烟粉虱成虫数量及空间格局差异进行研究。结果表明,7月7日至8月25日茄田烟粉虱成虫种群增长模型为y=3053e0.0053x(r=0.823*),菜用大豆田烟粉虱成虫种群增长模型为y=2356e-0.1662x(r=-0.9631**),对茄田和菜用大豆田烟粉虱成虫种群数量之间的差异性进行t检验,t值为3.3333,df=7时,t0.05=2.365,两者之间差异显著。这期间两种作物上烟粉虱成虫的田间水平分布和在茄株叶片上的垂直分布均呈聚集分布格局。
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Key words
eggplant field,adult tobacco whitefly,space pattern,population dynamics,soybean field
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