几种杀虫剂对水稻二化螟的防效比较

The Control Effects of Some Chemical Insecticides on Chilo suppressalis

对10%四氯虫酰胺SC、20%氯虫苯甲酰胺SC、30%茚虫威WG等10种药剂配方对1代二化螟的防效进行研究,结果表明:10%四氯虫酰胺SC40mL/667m^2、20%氯虫苯甲酰胺SC10mL/667m^2、6%阿维氯苯酰SC50mL/667m^2这3种药剂处理对水稻1代二化螟的防效都很好,且10%四氯虫酰胺SC的成本最低,是最优选择。3%阿维氟铃脲EC100mL/667m^2、3%阿维菌素ME60mL/667m^2这2个单剂防效均不理想,虽减量后和45%毒死蜱EC复配均提高了防效,但仍远不及10%四氯虫酰胺SC、20%氯虫苯甲酰胺SC、6%阿维氯苯酰SC这3种药剂处理。

We selected a number of chemical insecticides to test their control effects on Chilo suppressalis (Walker).The results showed that 10% SYP-9080 SC 40 mL/667 m^2,20% chlorantraniliprole SC 10 mL/667 m^2,and the mixture of abamectin and 6% chlorantraniliprole SC 50 mL/667 m^2 all achieved high efficacy in controlling Chilo suppressalis (Walker).In terms of cost-effectiveness of these chemical agents,10% SYP-9080 SC was shown to be the optimal choice.The efficacy of the mixture of 45% dursban EC and 3% hexaflumuron EC at a reduced application rate in controlling Chilo suppressalis (Walker) was higher than that of 3% hexaflumuron EC 100 mL/667 m^2 applied alone at a higher rate;similarly,the mixture of 45% dursban EC and 3% abamectin ME at a reduced application rate was more effective than 3% abamectin ME 60 mL/667 m^2 applied alone at a higher rate.On the other hand,48% dursban EC and 30% indoxacarb WG both showed low efficacy,so they are not recommended for use in controlling Chilo suppressalis (Walker).