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田间试验结果表明:在小菜蛾低龄幼虫高峰期,40%路路灵乳油750、1000倍液对小菜蛾药后3天的防效分别为95.7%、88.4%,药后7天为88.8%、83.9%。该药剂田间使用以750～1000倍为宜,显著好于辛硫磷与氯氰菊酯。为了明确路路灵防治小菜蛾的田间防治效果、使用剂量,筛选蔬菜生产中急需解决的抗性害虫小菜蛾的有效药种,我们于1997年小菜蛾发生高峰期进行药效试验,现将结果报告如下。
The results of field experiments showed that at the peak of young larvae of diamondback moth, the control efficacy of 750,1000 times 40% linden EC on the three days after drug administration was 95.7% and 88.4% respectively, 88.8% after 7 days, 83.9%. The agent used in the field to 750 to 1000 times is appropriate, significantly better than phoxim and cypermethrin. In order to clarify the field control effect of rillund against Plutella xylostella and to select the effective dose of the resistant insects diamondback moth, Plutella xylostella, which is urgently needed to be solved in vegetable production, we conducted the efficacy test at the peak of diamondback moth in 1997. The report is as follows.