铜色花椒跳甲幼虫空间分布型及抽样技术  

Spatial distribution pattern and sampling technique of Podagricomela cuprealarvae

作　　者：刘萍 沈平 吴建华 朱惠英 杨学毅 刘志强 

机构地区：[1]甘肃省临夏回族自治州森林病虫害防治检疫站,甘肃临夏731100 [2]甘肃省临夏回族自治州农业学校,甘肃临夏731100

出　　处：《甘肃农业大学学报》2013年第4期40-43,48,共5页Journal of Gansu Agricultural University

基　　金：甘肃省临夏州科技计划项目(2010-L-3-04)

摘　　要：应用6种分布型指数法分析判定了铜色花椒跳甲幼虫在花椒上的空间分布型,利用Taylor幂法则和Iwao回归方程分析聚集原因.结果表明:铜色花椒跳甲幼虫在花椒上呈聚集分布,公共kc值为3.588 1,且符合负二项分布,其种群聚集是由于昆虫本身行为习性所致.在此基础上,应用Iwao的最适理论抽样数模型建立了铜色花椒跳甲幼虫的田间最适抽样数公式:N=(t/D)2(1.631 2/m-0.226 1);根据Gerrard零频率模型建立了估计该种群平均密度的零频率公式x=1.436 6(-lnP0)0.764 1.The spatial distribution patterns of P. cuprea larvae in Zanthoxylum bungeanum field were studied using six spatial distribution pattern analysis methods and the assembling reasons were analyzed with Taylor power law and lwaoregression equation. Results indicated that the aggregated distribution of the P. cuprea larvae in field fited the negative binomial series;the reason for aggregated was due to the in- sect natural habit. Based on the distribution pattern, the formula of optimal sampling number N--（t/D） （1. 631 2 m-0. 226 1） was calculated based on Iwao＇s optimal theoretical sampling number model. The zero frequency model for P. cuprea larvae mean density estimation was established based on Gerrard＇s method as：x=1. 436 6（--ln P0）^0.764

关 键 词：铜色花椒跳甲 空间分布型 抽样技术 

分 类 号：Q969.512.4[生物学—昆虫学] S431[农业科学—农业昆虫与害虫防治]