摘要
采用多个聚集度指标和回归分析法对枣大球蚧Eulecanium gigantea及其主要天敌球蚧蓝绿跳小蜂Blastothrixsericae的空间分布格局进行研究。各聚集度指标均表明:枣大球蚧及其球蚧蓝绿跳小蜂在空间上的分布格局均是聚集分布;Taylor幂法则、Iwao的回归分析法也表明:枣大球蚧及其球蚧蓝绿跳小蜂在空间上的分布格局也是聚集分布,且聚集强度随种群密度的升高而增加;这种分布形式的一致性,有力地提高了天敌对寄主的自然控制能力。
The spatial distribution patterns of Eulecanium gigantea and its natural enemies Blastothrix sericae were determined, the equations of optimal sampling were formulated based on the regression models with mul- tiple aggregation indices. The result showed that spatial distribution pattern of Eulecanium gigantea and Blas- tothrix sericae belonged to aggregative distribution. Regression analysis of Iwao and Tayler also obtained a sim ilar conclusion, Eulecanium gigantea and Blastothrix sericae belonged to aggregative distribution and with the population density increasing, aggregation index increased. The coincidence in distribution effectively in- creased the control capacity of natural enemies on their hosts. [Ch, 3 tab. 10 ref. ]
出处
《浙江农林大学学报》
CAS
CSCD
北大核心
2012年第5期799-802,共4页
Journal of Zhejiang A&F University
基金
农业部公益性行业科研专项项目(201103024)
科技部农业成果转化资金项目(2011GB2G400004)
关键词
森林保护学
枣大球蚧
球蚧蓝绿跳小蜂
空间分布型
forest protection
Eulecanium gigantea
Blastothrix sericae
spatial distribution
