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对美洲斑潜蝇LiriomyzasativaeBlanchard危害豇豆造成的产量损失及虫情指数进行了分析．结果表明，虫情指数超高，产量损失越多，两者是极显著正相关．虫情指数达8－12时为防治指标．
The yield loss and insect index caused by Liriomyzasativae Blanchard on the cowpea were analyzed. The results showed that the worm index was extremely high and the yield loss was more and the two were extremely significant positive correlations. Insect index up to 8-12 when the control indicators.