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期 刊 ：植物保护学报 1994年

关键词：再生稻；二化螟；通径分析；防治指标；

Keywords:regenerate rice rice striped borer path analysis action threshold,

摘 要 ：在福建省,二化螟是再生稻的重要害虫。作者对第二代二化螟为害前季稻造成的产量损失结构进行了通径分析。通过田间调查和小区试验,建立了再生稻二化螟防治指标模型: ET=(100C·F-P·E(0.0037N_1 0.1207N_2))/(P·E(0.0123N_1 0.0098N_2)) (卵块密度) ET=(100C·F-P·E(0.0097N_1 0.1258N_2))/(P·E(0.7077N_1 0.5601N_2)) (枯鞘株率) 按照防治指标模型,制定出不同产量水平的防治指标。

Abstract:Rice striped borer (Chilo suppressalis Walker)is a major pest on regenerate rice in Fujian Province. In this paper, the structure of rice yield losses caused by second generation C. suppressalis in first crop rice were analysed with path analysis method.

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