4种杀虫剂对甘草胭珠蚧的防治效果  

Control effects of four insecticides against Porphyrophora sophorae

作　　者：张皓[1] 李培贵 李生彬 吕志强[1] 胡小平[1] Zhang Hao Li Peigui Li Shengbin Lv Zhiqiang Hu Xiaoping(Key Laboratory of Integrated Pest Management on Crop in Northwestern Loess Plateau, Ministry of Agriculture, P. R. China College of Plant Protection , Northwest A ＆ F University , Yangling 712100, China 2. Agro-Technical Extension Station of Ningxia , Yinchuan 750001, China Science and Technology Bureau of Yanchi County, Ningxia 751500, China)

机构地区：[1]农业部西北黄土高原作物有害生物综合治理重点实验室西北农林科技大学植物保护学院,杨凌712100 [2]宁夏农业技术推广总站,银川750001 [3]宁夏回族自治区盐池县科学技术局,盐池751500

出　　处：《植物保护》2017年第1期214-217,共4页Plant Protection

基　　金：宁陕科技合作项目(080807)

摘　　要：甘草胭珠蚧Porphyrophora sophorae(Arch.)是人工栽培甘草的主要害虫。采用灌根、土壤处理法研究了35%吡虫啉悬浮剂、70%噻虫嗪水分散粒剂、48%毒死蜱乳油和5%毒死蜱颗粒剂4种杀虫剂对甘草胭珠蚧的防治效果。结果表明,8月中旬施药各药剂的防治效果均低于50%,但可有效降低翌年春季田间的虫口密度;6月中旬采用35%吡虫啉悬浮剂和70%噻虫嗪水分散粒剂灌根的防效可达80%以上。建议生产中可在6月中旬或之前采用灌溉后进行35%吡虫啉悬浮剂1 500倍或70%噻虫嗪水分散粒剂7 500倍液300mL/株灌根的措施防治甘草胭珠蚧。Porphyrophora sophorae （Arch.） is one of the key pests of cultivated liquorice, Glycyrrhiza uralensis Fisch. The control effect of four insecticides, including imidacloprid 35% SC , thiamethoxam 70% WG, chlor- pyrifos 48% EC, and chlorpyrifos 5% GR through root-irrigation or soil treatment against the pest were investiga- ted. The results showed that no control efficacy of any insecticides reached 50%, but the densities of the nymphs reduced in the following spring when the insecticides were applied in mid August. However, the efficacies of imid- acloprid 35% SC and thiamethoxam 70% WG by irrigating root were over 80% when they were applied in mid June. Therefore root-irrigation using imidacloprid 35% SC （1500× ） or thiamethoxam 70% WG （7 500× ） with a dosage of 300 mL per plant were recommended for the control of P. sophorae in mid June or before.

关 键 词：甘草 甘草胭珠蚧 土壤处理 灌根 防治效果 

分 类 号：S482.3[农业科学—农药学]