高效氯氟氰菊酯与烯啶虫胺增效混配剂的筛选及其对小麦蚜虫的田间防治效果  

Screening of synergistic mixture of lambda-cyhalothrin and nitenpyram and its field control efficacy on wheat aphid

作　　者：杨恒力 李红宝 董文阳 王翠翠 史雪岩 梁沛 YANG Hengli;LI Hongbao;DONG Wenyang;WANG Cuicui;SHI Xueyan;LIANG Pei(College of Plant Protection,China Agricultural University,Beijing 100193,China)

机构地区：[1]中国农业大学植物保护学院,北京100193

出　　处：《植物保护》2024年第2期332-337,共6页Plant Protection

基　　金：国家大麦青稞产业技术体系(CARS-05-03A-16)。

摘　　要：为了延缓麦蚜抗药性和降低杀虫剂使用量,本研究筛选了具有增效作用的高效氯氟氰菊酯和烯啶虫胺的复配比例,并研究了增效复配剂对麦蚜的田间防治效果。浸叶法测定结果表明,高效氯氟氰菊酯对麦蚜的LC_(50)为25.01 mg/L,烯啶虫胺对麦蚜的LC_(50)为28.21 mg/L。通过最佳增效配比的筛选,发现高效氯氟氰菊酯和烯啶虫胺的有效成分比为1.3∶1、1∶1.1、1∶1.7、1∶10.2时,对麦蚜的毒效比分别为1.28、1.49、1.64、1.50,表现为增效作用。深入研究发现高效氯氟氰菊酯和烯啶虫胺的有效成分为1∶4.5、1∶7.5和1∶10.2的混配组合的共毒系数均显示了显著增效作用,其中,当高效氯氟氰菊酯与烯啶虫胺有效成分比为1∶7.5时,混配剂的LC_(50)为5.22 mg/L,共毒系数达到532.61。按有效成分比1∶7.5,将10%高效氯氟氰菊酯水乳剂与20%烯啶虫胺可溶液剂混用后,进行田间试验,结果表明,在药后1、3 d和7 d,混配剂的防效与高效氯氟氰菊酯单剂的防效无显著性差异,在药后1 d,混配剂的防效高于烯啶虫胺单剂的防效,在药后3 d及7 d,混剂与烯啶虫胺单剂的防效没有显著差异。混配剂的防效在药后7 d内不断上升,其中药后7 d防效达到92.98%。混配剂的使用可以达到对高效氯氟氰菊酯减量的目的,同时保证了对麦蚜的防效。In order to delay insecticides resistance and reduce the usage of insecticides during wheat aphid control,this study screened out the synergistic mixing ratio of lambda-cyhalothrin and nitenpyram against wheat aphid,and further examined the field control efficacies of the mixture against wheat aphid.The results of leaf dipping method showed that the LC_(50) value of lambda-cyhalothrin to wheat aphid was 25.01 mg/L,and the that of nitenpyram was 28.21 mg/L.Synergistic mixing ratio tests showed that the mixtures of lambda-cyhalothrin and nitenpyram with ratio of 1.3∶1,1∶1.1,1∶1.7 and 1∶10.2 exhibited the synergistic effects on wheat aphid with toxicity ratio of 1.28,1.49,1.64 and 1.50,respectively.Further study showed that the active ingredients combination of lambda-cyhalothrin and nitenpyram at ratio of 1∶4.5,1∶7.5 and 1∶10.2 exhibited significant synergistic effects with high co-toxicity coefficient.When the active ingredient ratio of lambda-cyhalothrin and nitenpyram at 1∶7.5,the LC_(50) value of the combination was 5.22 mg/L,and the co-toxicity coefficient reached 532.61.Field test was carried out with the combination of lambda-cyhalothrin 10%EW and nitenpyram 20%SL at an active ingredient ratio of 1∶7.5.There was no significant difference in the control efficacies of the mixture against wheat aphids with the lambda-cyhalothrin.One day after treatment,the control efficacy of the mixture was higher than that of the nitenpyram,while three days and seven days after treatments,there was no difference in the control efficacies of the mixture and nitenpyram.After treatment,the control efficacies of the mixture increased within seven days,while it reached 92.98% at the 7th day,which ensures the control efficacies to wheat aphid with achieving the purpose of reduction the usage of lambda-cyhalothrin.

关 键 词：高效氯氟氰菊酯 烯啶虫胺 混配 麦蚜 防治效果 

分 类 号：S435.122.2[农业科学—农业昆虫与害虫防治]