摘要
通过田间调查和统计分析 ,对棉铃虫Helicoverpaarmigera(H櫣ｂｎｅｒ)卵在番茄田的垂直和空间分布进行了的研究。结果表明 :棉铃虫卵在田间的垂直分布主要集中在植株的上部 ;空间分布呈聚集分布中的负二项分布。确定了棉铃虫卵在番茄田的取样以Z字型、棋盘式为最佳 。
On the basis of the investigation and analysis, We found that the spatial distribution pattern of eggs of the second generation of Helicoverpa armigera (Hübner) was negative binomial distribution in the tomato field, which belongs to an aggregation distribution pattern. The vertical distribution showed that the eggs mainly concentrated on the top of the tomato plant. The “Z' and chessboard type of sampling method are proposed for investigation of egg densities in the field.
出处
《昆虫知识》
CAS
CSCD
北大核心
2004年第2期137-140,共4页
Entomological Knowledge
基金
新疆昌吉州科技局重要科研项目 (2 0 0 1~ 2 0 0 3)
