| 斜纹夜蛾幼虫在棉田的空间格局及抽样技术 |
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| 引用本文： | 郑福山,韩旭,杜予州,许佳君,卢艳阳,王志杰,韩阅叶.斜纹夜蛾幼虫在棉田的空间格局及抽样技术[J].扬州大学学报(农业与生命科学版),2005,26(1):85-88,93. |
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| 作者姓名： | 郑福山 韩旭 杜予州 许佳君 卢艳阳 王志杰 韩阅叶 |
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| 作者单位： | 扬州大学,应用昆虫研究所,江苏,扬州,225009;河南农业大学,植物保护学院,河南,郑州,450002 |
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| 基金项目： | 江苏省"十五"科技攻关项目(BE2001343) |
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| 摘 要： | 在斜纹夜蛾发生盛期,应用Iwao和Taylor两种回归方法及采用扩散系数C、平均拥挤度M、聚集指数I、负二项分布K值、扩散指数CA值、聚块性指标M/x、负二项分布指数L’、负二项分布扩散型指标L’／(1 x)和扩散指标I8等9个聚集度指标,对斜纹夜蛾幼虫在棉田的空间格局进行研究。结果表明：斜纹夜蛾幼虫在棉田内呈聚集分布。在空间格局的基础上提出了理论最适抽样数N=(t2／D2)(1/x 2．8042)和复合序贯抽样方案,提高了田间调查效率。
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| 关 键 词： | 棉花 斜纹夜蛾 空间格局 复合序贯抽样 |
| 文章编号： | 1671-4652(2005)01-0085-04 |
Spatial distribution pattern and sampling technique of the larvae of Prodenia litura Fabricius in cotton field |
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| L Li-lan,HAN Xu,DU Yu-zhou,XU Jia-jun,LU Yan-yang,WANG Zhi-jie,HAN Yue-ye.Spatial distribution pattern and sampling technique of the larvae of Prodenia litura Fabricius in cotton field[J].Journal of Yangzhou University:Agricultural and Life Science Edition,2005,26(1):85-88,93. |
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| Authors: | L Li-lan HAN Xu DU Yu-zhou XU Jia-jun LU Yan-yang WANG Zhi-jie HAN Yue-ye |
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| Abstract: | This paper studied the spatial distribution pattern of larva of Prodenia litura Fabricus in cotton field by Iwao method and Taylor method models and nine indices of aggregation (K, C, CA, i, Io, M' , M' /x, L' . L'/(1 + x), all indices indicated that the distribution of P. litura was of an aggregated pattern. The theoretical sampling number and the compound sequential sampling method were presented on the base of the spatial distribution pattern. |
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| Keywords: | cottons Prodenia litura Fabricius spatial distribution pattern compound sequential sampling |
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