| 烟田异色瓢虫幼虫空间分布型及抽样技术 |
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| 引用本文： | 任广伟,申万鹏,马剑光.烟田异色瓢虫幼虫空间分布型及抽样技术[J].昆虫知识,2000,37(3):164-165,163. |
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| 作者姓名： | 任广伟 申万鹏 马剑光 |
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| 作者单位： | 1. 中国农科院烟草研究所,山东青州,262500
2. 贵州驰宇集团烟科所,毕节,551700 |
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| 摘 要： | 异色瓢虫幼虫在烟田的空间分布型为聚集分布 ,并符合负二项分布。聚集原因由环境差异引起。通过 Taylor指数回归式参数确定了在一定精确度水平下的理论抽样数。
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| 关 键 词： | 烟田 异色瓢虫 幼虫 分布型 抽样技术 |
The spatial distribution pattern and sampling method of the larvae of Leis axyridis in tobacco fields |
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| REN Guang-Wei,SHEN Wan-Peng,MA Jian-Guang.The spatial distribution pattern and sampling method of the larvae of Leis axyridis in tobacco fields[J].Entomological Knowledge,2000,37(3):164-165,163. |
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| Authors: | REN Guang-Wei SHEN Wan-Peng MA Jian-Guang |
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| Abstract: | The spatial distribution pattern of the larvae of Leis axyridis (Pallas) was of the aggregate pattern and fitted with the negative binomial distribution. The aggregation was caused by the enviromental factors. The sample size requirements at fixed precision levels were determined using Taylor's power law regression. |
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| Keywords: | tobacco fields Leis axyridis larva spatial distribution sampling method |
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