草业科学2012，Vol.29Issue(8)：1313-1316,4.
蓟马在苜蓿上的空间分布格局研究
Spatial distribution pattern of thrips on alfalfa
摘要
Abstract
In order to explore the spatial distribution pattern of thrips on alfalfa （Medicago sativa）, aggregation indexes and Iwao regression methods were used in this study. The results showed that the distribu- tion of thrips on alfalfa behaved as the clustered colonies and the aggregation intensity decreased with the increasing of cutting times. The aggregation was affected by environmental factors and thrips habits. Based on the parameters fitted by the Iwao model, the equation of optimal sampling number was proposed.关键词
蓟马/苜蓿/空间分布型/抽样技术Key words
thrips/alfalfa/distribution pattern/sampling technique分类
农业科技引用本文复制引用
吴永斌,魏敏,刘长仲..蓟马在苜蓿上的空间分布格局研究[J].草业科学,2012,29(8):1313-1316,4.基金项目
公益性行业（农业）科研专项 （）
草业生态系统教育部省部共建重点实验室项目 （）
