| 摘要: |
| 调查结果表明，肚倍蚜（Kuburagia rhusicola Takagi）越冬种群在自然气候室内不同层次、方向的越冬寄主上的分布无本质差异，空间格局符合“复合波松”等理论分布型，由三重疏松个体群组成，个体群面积分别为28，20个和12cm2，个体群平均有虫3.8453头，在此基础上建立了理论抽样模型。抽样方法比较结果以五点取样，每点在相邻两层冬寄主上取样10个（×4cm2）代表性最好。 |
| 关键词: 肚倍蚜，种群分布，空间格局，抽样技术 |
| DOI： |
| 分类号:S433.3 |
| 基金项目:陕西省自然科学基金 |
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| Spatial Distribution Pattern and Sampling Techniques of Gallnut Aphid (Kuburagia rhusicola Takagi) Overwintering Population |
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| Abstract: |
| This paper deals with the spatial distribution pattern and sampling techniques of the gallnut aphid,Kuburagia rhusicola Takagi overwintering population.The investigatory and experimental results show that the average densities of the population
at different layers and orientations have no statistical difference in the natural climatic laboratory.The spatial distribution pattern is in agreement with complex Poisson distribution.The distribution consists of three individual groups.The areas of large,medium and small groups average 28,20,and 12cm2 respectively with the average aphid member of 3.8453 in each group,on which the theoretical sampling model is set up.The result of the comparasion among the sampling methods shows that the 5 plot sampling method,taking 10 (4cm2)samples from winter hosts at two adjacent layers at each spot,has the best representation for the population. |
| Key words: Kuburagia rhusicola Takagi,population distribution,spatial distribution pattern,sampling method |
