桉树枝瘿姬小蜂幼虫空间分布型研究

桉树枝瘿姬小蜂是桉树的重要害虫,本文利用频次分布等各种指标以及Taylor幂法则、Iwao m*-m模型对其幼虫空间分布型进行了研究,结果表明:桉树枝瘿姬小蜂幼虫属于均匀分布,其Taylor幂法则回归方程为lgS2=-0.456+0.987lgx,Iwao m*-m回归方程为:m*=-0.644+0.999m,并对其最适理论抽样数公式进行了预测。为桉树枝瘿姬小蜂调查取样和防治工作提供了科学依据。

Leptocybe invasa is a main pest attacking eucalypts in the world, The paper was to study the spatial distribution of larvae of Leptocybe invasa, the spatial distribution was ca]culate- ed by using aggregated Index and other Index. The results are as follows： the spatial distribution of larvae was mainly uniform distribution, and the regression equation of Tayior＇s power law waslgS2=--0.456＋0.9871gx, the regression equation of Iwao m＊-m law was m＊=-0.644＋ 0.999m, the theoretical sampling number was ascertained. The result provided scientific basis for sampling and control of Leptocybe invasa.