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田间药效试验结果表明,30%甲维·毒死蜱水乳剂不同剂量对稻飞虱达到防治指标、2~3龄若虫盛期进行防治速效性好,持效期长,药后3~7 d防效达96%~100%,药后10 d对稻飞虱的控制效果仍有88.5%~98.83%,极显著优于对照农药77.5%敌敌畏乳油、20%叶蝉散乳油。30%甲维·毒死蜱水乳剂推荐用量为50 m L/667 m2(制剂用量),防治适期达到防治指标、2~3龄若虫盛期前。
The results of the field efficacy test showed that 30% carbaryl chlorpyrifos aqueous emulsion reached the control index for rice planthopper, and the control effect of 2 ~ 3 instar nymphs was rapid and long-lasting. After 3 to 7 days of treatment, Effective 96% ~ 100%, 10d after the control of planthopper control effect is still 88.5% ~ 98.83%, very significantly better than the control pesticide 77.5% dichlorvos EC, 20% leaf cicada scattered EC. The recommended dosage of 30% carbaryl chlorpyrifos was 50 m L / 667 m2 (preparation dosage). The control index was reached in the control period and before the 2nd to 3rd instar nymphs.