摘要
采用系统调查的方法对香蕉弄蝶(ErionotatorusEvans)卵在香蕉园的空间分布格局进行了研究.结果表明,香蕉弄蝶卵在香蕉园呈聚集分布,建立了Iwaom m回归模型和Taylor幂模型分别为m =1 528+0 873m、log(s2)=0 324+0 821log(m).丛生指数、聚块性指数随着卵密度增大而逐渐减小,且趋于稳定.建立了最适理论抽样数公式为N=22 563×(2 528÷m-0 127),并给出了不同密度、不同准确度要求下的最适抽样株数,为该虫的田间卵密度调查提供了依据.
The spatial pattern of the banana skipper (Erionota torus Evans) eggs was studied with a systemic method. The spatial distribution of the eggs was aggregative in the banana plantation. The regressing models of Iwao m~*-m and Taylor model were m~*=1.528+0.873 m and log(s^2)=0.324+0.821 log(m) respectively. In addition, the most suitable sampling quantity for different density of eggs and accuracy could be obtained from the formaula: N=22.563×(2.528÷m-0.127).
出处
《仲恺农业技术学院学报》
CAS
2003年第4期17-20,共4页
Journal of Zhongkai Agrotechnical College
基金
广东省重点科技攻关和国际合作项目(980135)资助.
