| 桃蛀螟幼虫在板栗上的空间分布型研究 |
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| 引用本文： | 陈炳旭,董易之,陆恒.桃蛀螟幼虫在板栗上的空间分布型研究[J].昆虫天敌,2008(4). |
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| 作者姓名： | 陈炳旭 董易之 陆恒 |
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| 作者单位： | 广东省农业科学院植物保护研究所; |
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| 基金项目： | 广东省农业攻关项目(2005B20501007) |
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| 摘 要： | 通过对不同板栗园桃蛀螟Dichocrocis punctiferalis Guenee幼虫的调查,用昆虫分布型的4种常用理论公式分别进行配合适度的χ2检验,再用6种空间分布型聚集度指标、Taylor幂法则及Iwao回归法对桃蛀螟幼虫的空间分布型进行测定。结果表明:桃蛀螟幼虫种群在板栗园中全部呈聚集分布,而且均符合负二项分布,其聚集原因是由该虫习性与环境因素共同造成的。此外,还利用了分布型参数确定了桃蛀螟幼虫的理论抽样数。
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| 关 键 词： | 板栗 桃蛀螟 幼虫 空间分布型 理论抽样 |
Studies on the spatial distribution pattern of Dichocrocis punctiferalis larvae in chestnut trees |
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| CHEN Bing-Xu,DONG Yi-Zhi,LU Heng.Studies on the spatial distribution pattern of Dichocrocis punctiferalis larvae in chestnut trees[J].Natural Enemies of Insects,2008(4). |
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| Authors: | CHEN Bing-Xu DONG Yi-Zhi LU Heng |
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| Institution: | CHEN Bing-Xu,DONG Yi-Zhi,LU Heng(Plant Protection Research Institute,Guangdong Academy of Agricultural Sciences,Guangzhou 510640,China) |
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| Abstract: | The spatial distribution patterns of Dichocrocis punctiferalis larvae in different chestnut orchards were surveyed and analysized by frequency distribution,aggregation indices,Taylor's power law and Iwao's regression methods.The results showed that the larvae in all orchards were in aggregation distribution pattern and fitted for negative binomial distribution tested by chi-square,which was due to the life habit of the larvae and environmental factors.In addition,the theoretical sampling number was obtained... |
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| Keywords: | chestnut trees Dichocrocis punctiferalis larvae spatial distribution pattern theoretical sampling |
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