3种不同药剂及其混配组合对梨园梨木虱的防效  

Field Efficacy of Three Pesticides and Their Mixtures on Psylla chinensis

作　　者：杜恩强[1] 封云涛[1] 郭晓君[1] 张润祥[1] 庾琴[1] DU En-qiang;FENG Yun-tao;GUO Xiao-jun;ZHANG Run-xiang;YU Qin(Institute of Plant Protection,Shanxi Academy of Agricultural Sciences,Shanxi Key Laboratory of Integrated Pest Management in Agriculture,Taiyuan 030031,China)

机构地区：[1]山西省农业科学院植物保护研究所农业有害生物综合治理山西省重点实验室

出　　处：《农药》2019年第12期932-933,936,共3页Agrochemicals

基　　金：山西省重点研发计划项目(201803D221015-2);国家重点研发计划项目(2016YFD0200505);山西省农科院特色农业技术攻关项目(YGG17109)

摘　　要：[目的]为筛选出对梨园梨木虱防治效果好的药剂及其混配组合。[方法]采用田间小区试验的方法,测定试验3种药剂及其混配组合对梨木虱的田间防效。[结果]单剂中,22.4%螺虫乙酯悬浮剂44.8~74.7 mg/L处理7 d时的校正防效为56.98%~85.81%,20~35 d时的防效为92.77%~100%,产卵抑制率65.50%~85.91%;5%阿维菌素微乳剂25.0 mg/L、7 d时的校正防效98.68%,20~35 d防效显著下降至52.42%~59.44%,抑制产卵率为64.78%;20%呋虫胺可溶粒剂防效和产卵抑制率显著低于22.4%螺虫乙酯悬浮剂和5%阿维菌素微乳剂。阿维菌素与螺虫乙酯复配后,显著提高对梨木虱的产卵抑制率;5%阿维菌素微乳剂与20%呋虫胺可溶粒剂复配后,校正防效显著增加,持效期由7 d增至35 d,产卵抑制率显著增加至83.70%以上。[结论]防治梨园梨木虱时,可使用螺虫乙酯单剂、阿维菌素+螺虫乙酯或阿维菌素+呋虫胺混配组合。[Aims] This study aims to select pesticides and their mixtures with high control effect. [Methods] Field trails were carried out with three pesticides and their mixtures to evaluate the control effects in pear tree. [Results] Among these three pesticides, the revised control effect of spirotetramat 22.4% SC 44.8-74.7 mg/L was 56.98-85.81% in 7 d and 92.77-100% in 20-35 d, and with 65.50-85.91% inhibition egg-laying of Psylla chinensis, respectively. The revised control effect of avermectin 5% ME 25.0 mg/L was 98.68% in 7 d and 52.42-59.44% in 20-35 d, and with 64.78%inhibition egg-laying rate, respectively. The control effect and inhibition rate of dinotefuran 20% SG was significantly lower than that of 5% avermectin ME and spirotetramat 22.4% SC. The inhibition egg-laying rate increased significantly when avermectin and spirotetramat were mixed. The efficacy increased significantly and lasting time increased from 7 to 35 d with 83.70% inhibition egg-laying rate when avermectin 5% ME and dinotefuran 20% SG were mixed. [Conclusions] Spirotetramat 22.4% SC, avermectin+spirotetramat or avermectin+dinotefuran could be used to prevent P. chinensis effectively in pear tree.

关 键 词：梨木虱 杀虫剂 田间防效 

分 类 号：S482.3[农业科学—农药学]