| 摘要: |
| 为了明确番茄田烟粉虱的主要自然天敌种类,用逐步回归分析方法、灰色系统分析法、生态位分析法和空间格局聚集强度指标分析法对番茄烟粉虱与其几种主要天敌在数量、时间、空间格局三方面的关系进行分析。综合排序的结果表明,烟粉虱的主要天敌依次是草间小黑蛛、八斑球腹蛛、粽管巢蛛。对春-夏和秋-冬两茬番茄田烟粉虱的数量进行t检验,t值为3.3768,t>t0.01(2.86),两茬烟粉虱数量差异极显著,春-夏茬烟粉虱平均为1 086头/百株,秋-冬茬平均为14940头/百株,秋-冬茬大棚阻止了棚外天敌向棚内扩散,棚内天敌种类和数量均极少,只有4种共9头/百株,是春夏茬天敌数量的0.8%。 |
| 关键词: 番茄田 烟粉虱 天敌 灰色系统分析 生态位分析 空间格局分析 |
| DOI：10.11841/j.issn.1007-4333.2009.04.087 |
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| 基金项目:安徽省省长专项基金资助项目(y47) |
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| Temporal and spatial relationships among Bemisia tabaci and its natural enemies in tomato fields |
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| Abstract: |
| To definitude the species of main natural enemies in tomato fields,in this present work,the quality,time and spatial framework of B.tabaci and its natural enemies was further studied using stepwise regression analysis,grey system analysis,ecological niche analysis and aggregated-intensity index analysis of spatial patterns.The synthetic ranking analysis indicated that the main natural enemies of B.tabaci were Erigonidium graminicda,Therdiong octomaculatum and Clubiana japonicola.The number of B.tabaci durin... |
| Key words: tomato fields Bemisia tabaci natural enemies grey system analysis ecological niche analysis analysis of spatial pattern |
