摘要
本文应用聚集度指标研究了矢尖蚧蚜小蜂成虫的空间格局,结果表明,矢尖蚧蚜小蜂成虫在柑桔树内呈聚集分布,聚集的原因是由环境因素引起的。同时还利用Iwao公式的α、β参数确定了理论抽样数和序贯抽样方案。
The spatial distribution pattern of Aphytis yanonensis on the citrus was studied by means of determining aggregated indices in Huaxi, Guiyang. The results showed that the distribution pattern of adult of A. yanonensis belongs to aggregated distribution. The aggregation of adult may be the influence of some environmental factors. Meanwhile, an equation for data transformation, a suitable sampling numbers and Kuno's sequential sampling were also proposed by substitution of α and β from Iwao's regression equation.
出处
《昆虫天敌》
CSCD
1991年第4期162-166,共5页
Natural Enemies of Insects
关键词
矢尖蚧
矢尖蚧蚜小蜂
空间格局
Unaspis yanonensis, Aphytis yanonensis, Spatial distribution pattern
Sampling technique.
