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对危害孝顺竹Bambusa multiplex的居竹伪角蚜Pseudoregma bambusicola及其3种主要天敌的空间分布进行调查,聚集度指标表明竹蚜在竹林间为聚集分布,其种群密度在一定时间内较为稳定。天敌蚜灰蝶Taraka hamada、赤星瓢虫Lemnia saucia和食蚜虻Asilidae sp.在竹林中主要符合负二项式分布和P-E核心分布,为不均匀的聚集分布,存在由点片向四周扩散的现象,频次分析和聚集度指标的分析结果基本一致,其中瓢虫的聚集程度不及另外2种天敌的明显。对竹蚜和天敌的相关关系分析表明,仅食蚜虻的分布与竹蚜之间表现为负相关(r=-0.6341),食蚜虻的活动受蚜群分布的影响最大,而其余2种天敌的取食范围不受限制。
The spatial distribution of Pseudoregma bambusicola and its three main natural enemies of Bambusa multiplex, which infects bamboo Bambusa multiplex, was investigated. The clustering index indicated that the bamboo aphid was aggregated in the bamboo forest, and its population density was stable within a certain period of time. Natural enemies Aphididae, Taraka hamada, Lemnia saucia, and Asilidae sp., Mainly meet the negative binomial distribution and PE core distribution in bamboo forest, which are unevenly distributed and distributed from spots to the periphery. Frequency analysis and clustering index analysis results are basically the same, the ladybug aggregation less than the other two kinds of natural enemies obvious. The correlation analysis between bamboo aphid and natural enemies showed that there was a negative correlation (r = -0.6341) between the distribution of herbivorous aphid and bamboo aphid (R = -0.6341), the distribution of aphid population was the most affected, while the other two Natural enemies of the feeding range is not limited.