| 玉米螟赤眼蜂在甜玉米地寄生率和扩散规律的研究 |
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| 引用本文： | 胡学难,梁广文,庞雄飞.玉米螟赤眼蜂在甜玉米地寄生率和扩散规律的研究[J].昆虫知识,2003,40(3):224-228. |
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| 作者姓名： | 胡学难 梁广文 庞雄飞 |
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| 作者单位： | 1. 广州出入境检验检疫局植检实验室,广州,510623
2. 华南农业大学昆虫生态研究室,广州,510642 |
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| 基金项目： | 国家自然科学基金资助项目 (3 993 0 12 0 ) |
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| 摘 要： | 调查研究了玉米螟赤眼蜂Trichogramma ostriniae Pang et Chen在甜玉米地的年消长动态、日活动规律，以及对不同甜玉米品种和不同防治类型地亚洲玉米螟Ostrinia furnacalis (Guenee)卵的寄生率。玉米螟赤眼蜂田间扩散规律为：在苗期，按每点2000头的蜂量相距32m左右释放玉米螟赤眼蜂，即可达到50％以上的寄生率；在穗期，按每点2000头的蜂量相距24m左右释放玉米螟赤眼蜂，可达到80％以上的寄生率。
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| 关 键 词： | 玉米螟赤眼蜂 寄生率 甜玉米地 扩散规律 |
| 修稿时间： | 2002年7月26日 |
Parasitization by dispersion of Trichogramma ostriniae in sweet corn fields |
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| HU Xue,Nan.Parasitization by dispersion of Trichogramma ostriniae in sweet corn fields[J].Entomological Knowledge,2003,40(3):224-228. |
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| Authors: | HU Xue Nan |
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| Abstract: | The annual population dynamics and daily activity patterns of Trichogramma ostriniae were investigated. Parasitization rates differed in different varieties of sweet corn and control fields. Optimum release rate and dispersal distance were obtained by studying dispersal patterns. In the early growing period where the release rate was 2?000 wasps per site and the release sites were 32 metres apart the parasitization rate was >50%. In the later growing period where the release rate was 2?000 wasps per site and release sites were 24 metres apart the parasitization rate was >80%. |
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| Keywords: | Trichogramma ostriniae Pang et Chen rate of parasitization dispersion |
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