摘要
对 8块烟田的龟纹瓢虫空间分布调查和分析结果表明 ,该虫空间分布符合负二项分布 ,均属聚集分布 ,聚集的原因主要是由环境因素所致 。
The spatial distribution of Propylaea japonica (Thunberg) in tobacco fields was studied. The results showed that the spatial distribution pattern of Propylaea japonica was aggregate and it could be illustrated by negative binomial distribution. The main reason of aggregation might result in the environmental factors. The best sampling method is shape chess board.
出处
《华东昆虫学报》
2001年第2期55-59,共5页
Entomological Journal of East China
关键词
龟纹飘虫
空间分布型
抽样技术
烟田
蚜虫天敌
Propylaea japonica (Thunberg), spatial distribution, sampling method
