劳氏粘虫幼虫在玉米田的空间分布及抽样技术研究

Spatial distribution patterns and sampling techniques of larvae of Leucania loreyi duponchel in corn fields

运用频次分布、聚集度指标法等方法对劳氏粘虫的空间分布型进行了研究 .结果表明 ,劳氏粘虫幼虫在玉米田呈聚集分布 ,同时符合负二项分布 .

Studies were conducted to determine the spatial distribution of larvae of grain armyworm, Leucania loreyi using the methods of frequency distribution and index of aggregation, etc. Results show that the larvae of grain armyworm accord with aggregated distribution, and meanwhile, accord with negative binomial distribution in the corn fields. The theoretical sampling number was advanced based on the study on spatial distribution pattern.