30%辛硫磷微囊悬浮剂防治花生蛴螬田间药效试验

目的]筛选适合花生防治蛴螬的30%辛硫磷微囊悬浮剂最佳田间使用量。方法]以30%毒死蜱微囊悬浮剂12 000、15 000、18 000 g/hm2为处理,以40%辛硫磷乳油15 000 g/hm2为正常对照,以清水处理为空白对照,调查花生被害情况,计算各处理防效。结果]使用30%辛硫磷微囊悬浮剂12 000~18 000 g/hm2防治花生蛴螬效果显著好于对照药剂40%辛硫磷乳油,但30%辛硫磷微囊悬浮剂处理间防效差异不显著。结论]30%辛硫磷微囊悬浮剂药效长、防效好,可在生产上推广使用。

Field Efficacy Trials of 30%Microcapsule Suspension of Phoxim against Peanut White Grub

Objective]The study aimed to select the optimal dosage of 30% microcapsule suspension of phoxim against peanut white grub in field trials.Method]The 12 000,15 000,18 000 g/hm2 dosage of 30% phoxim microcapsule suspension was designed as treatments,meanwhile 15000 g/hm2 40% phoxim E C and water were regarded as normal control and blank control,respectively.The harmfulness condition of peanut was investigated,and the control effect was calculated.Result] The control effects of 12 000-18 000 g/hm2 30% phoxim microcapsule suspension were obviously higher than 40% Phoxim E C,but no significant differences among the 30% phoxim microcapsule suspension treatments were observed.Conclusion]With the advantages of good grub control effect and long action cycle,30% microcapsule suspension of phoxim could be generalized in field.