杭白菊春蚜、秋蚜的空间格局与抽样技术研究

Studies on Spacial Pattern and Sampling Technique of Aphis in Chrysanthemum Filed

应用空间分布型统计参数Iwaom m模型中α、β及若干聚集度指标分析了菊蚜在春季、秋季的空间格局,并对抽样技术进行了探讨。结果表明:菊蚜空间格局为聚集型,依此提出了估算菊蚜在不同密度下的理论抽样数。

Spacial pattern of chrysanthemum-aphis in spring and autumn was analyzed by using αandβ,the statistical parameter of spacial distribution Iwao m~*-m model and some indexes of social degree , the sampling technique was discussed as well.The result showed that the spacial pattern of aphis in chrysanthemum filed was social.Based on this result,the theoretical sampling number of account aphis at different population density was put forward.