摘要
在牛蒡长管蚜为害盛期调查了其在7个品种牛蒡田的种群密度,并采用聚集度指标法和线性回归法测定了牛蒡长管蚜在牛蒡田的空间分布型。结果表明:牛蒡长管蚜在"东北理想"田的种群密度最大,在"地皇早生"田的种群密度最小;牛蒡长管蚜在牛蒡田呈聚集分布,分布的基本成分是个体群,聚集度随着种群密度升高而增大。
The population density of Uroleucon gobonis in the field of 7 burdock varieties was investigated during its occurrence peak, and the spatial distribution pattern of Uroleucon gobonis in burdock field was analyzed by using some aggregation indexes and finear regressive equations. The results showed that the highest population density was found in the field of variety ＂Dongheilixiang＂, and the lowest population density was found in the field of variety ＂Dihuangzaosheng＂. The spatial distribution pattern of Uroleucon gobonis belonged to aggregative distribution, the basic component of its spatial distribution was colony, and the aggregative degree increased along with the rising of the population density.
出处
《江西农业学报》
CAS
2010年第1期89-90,94,共3页
Acta Agriculturae Jiangxi
关键词
牛蒡长管蚜
空间分布型
牛蒡田
Uroleucon gobonis
Spatial distribution pattem
Burdock field
