浙江农业学报

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桑天牛越冬幼虫的空间分布与抽样技术

  

  1. (云南省农业科学院 蚕桑蜜蜂研究所,云南 蒙自 661101)
  • 出版日期:2016-02-25 发布日期:2016-03-10

Spatial distribution pattern and sampling technique of overwintering larvae of Apriona germari Hope

  1. ( Institute of Sericulture and Apiculture, Yunnan Academy of Agricultural Sciences, Mengzi 661101, China)
  • Online:2016-02-25 Published:2016-03-10

摘要: 为明确桑天牛(Apriona germari Hope)越冬幼虫的空间分布,采用6种聚集度指标(m*/m,C,k,Iδ,I,CA)和2种回归模型(Taylor的幂法则和m*-m)测定其空间分布,并利用Blackith种群聚集均数λ解析该幼虫种群的聚集成因。结果表明,其呈均匀分布,建立了桑天牛越冬幼虫抽样数公式(N=t2(1.0097m-0.1971)/D2)和序贯抽样模型(T(n)=0.2n± 0.4405),该模型可为桑天牛的预测预报及防治提供理论依据。

关键词: 桑天牛, 越冬幼虫, 空间分布, 抽样技术

Abstract: The spatial distribution patterns of overwintering larvae of Apriona germari larva in Morus alba 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 Apriona germari larva population was in uniform distribution. The optimal sampling equation(N=t2(1.0097m-0.1971)/D2) and sequential sampling equation(T(n)=0.2n±0.4405) were established. This paper may provide the basis for prediction and control of Apriona germari.

Key words: Apriona germari Hope, overwintering larvae, spatial distribution pattern, sampling techniques