摘要
运用5种聚集度指标与2种回归分析方法对红梨园梨二叉蚜(Schizaphis piricola Matsumura)种群空间格局进行了研究。结果表明,在整个调查期间内,红梨园梨二叉蚜均呈聚集分布,且种群处于扩散和聚集交替进行的动态过程中。利用Iwao法确定了红梨园梨二叉蚜不同种群密度下的田间理论抽样数。
The spatial pattern of Schizaphis piricola Matsumura in red pear plantation was analyzed by using five indices of aggregation and two regression models.The results showed that the spatial pattern of Schizaphis piricola was aggregated distribution and its population alternatively presented aggregation and dispersion during the whole investigation.The theoretical sampling numbers of Schizaphis piricola in red pear plantation were also determined by Iwao principle.
出处
《安徽农业科学》
CAS
北大核心
2010年第15期7931-7932,8005,共3页
Journal of Anhui Agricultural Sciences
基金
云南省森林灾害预警与控制重点实验室资助项目(ZK09-A103)
关键词
梨二叉蚜
红梨
空间格局
抽样技术
Schizaphis piricola Matsumura
Red pear
Spatial pattern
Sampling technique
