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通过多点试验，筛选出９０％杀虫单可湿性粉剂防治美洲斑潜蝇的最佳用药量为４０ｇ／６６７ｍ２，最佳用药期在成虫羽化高峰期和幼虫处于１～２龄时，最佳施药时间在上午９∶００前１次施药，可达到８５％以上的防治效果。
According to the multi-point test, the optimal dosage of 90% insecticidal WP was 40g / 667m2, the optimum dosage was at the peak of adult emergence and the larvae were at the first to second instar Application time in the morning before 9:00 spraying, up to 85% of the control effect.