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| 杜仲梦妮夜蛾幼虫的空间分布型及抽样技术 |
| Larval spatial distribution pattern and sampling technique of Orthosia songi Chen et Zhang sp nov |
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| DOI： |
| 中文关键词: 杜仲梦妮夜蛾 幼虫 空间分布型 抽样技术 |
| 英文关键词:Orthosia songi Larva Spatial distribution pattern Sampling technique |
| 基金项目:国家林业公益性行业科研专项项目(201304406) |
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| 中文摘要: |
| 杜仲梦妮夜蛾是近年来严重危害杜仲的主要食叶害虫，幼虫专性取食杜仲叶片。本研究运用6种聚集度指标（m*/m、c、k、Iδ、I、Ca）和两种回归模型（Taylor幂法则和m*-m回归模型）研究分析了种植园中杜仲梦妮夜蛾幼虫种群的空间分布型，利用Blackith种群聚集均数λ解析幼虫种群的聚集成因。结果表明杜仲梦妮夜蛾幼虫种群呈均匀分布，而且这种空间分布型是由环境因素引起的。建立了杜仲梦妮夜蛾幼虫抽样数公式N=\[38416(0022/m-0152)\]/D2和序贯抽样模型T(n)=01n±0053〖KF(〗n〖KF)〗。本研究为杜仲梦妮夜蛾虫情调查、害虫治理决策提供参考依据。 |
| 英文摘要: |
| The Orthosia songi Chen et Zhang sp Nov is one of serious herbivorous insect pests of Eucommia ulmoides. It is oligophagous and the larva feeds on Eucommia ulmoides leaves The spatial distribution patterns of Orthosia songi larva in Eucommia plantation were studied using six spatial distribution pattern analysis methods (m*/m、c、k、Iδ、I、Ca) and two regression equations (Taylor power and m*-m), the assembling reasons were analyzed with average aggression size λ The results indicated that spatial distribution patterns of Orthosia songi larva population was uniform distribution and the distribution pattern could be explained by environmental effects The optimal sampling equation (N=\[38416(0022/m-0152)\]/D2) and sequential sampling equation (T(n)=01n±0053〖KF(〗n〖KF)〗) were established This paper may provide the base for sampling and control of Orthosia songi. |
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