| 蒋立奔，须秋静，张普娟，郭成宝，田厚军，曹荣祥,2023,3种除草剂对七星瓢虫的急性毒性与初级风险评估[J].环境昆虫学报,45(1):196-203 |
| 3种除草剂对七星瓢虫的急性毒性与初级风险评估 |
| Acute toxicity and primary risk assessment of three herbicides to Coccinella septempunctata |
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| DOI： |
| 中文关键词: 除草剂 七星瓢虫 急性毒性 环境风险评估 |
| 英文关键词:Herbicide Coccinella septempunctata acute toxicity environment risk assessment |
| 基金项目:江苏现代农业（草莓）产业技术体系（JATS[2022]008）；亚夫科技服务项目（KF(20)1021） |
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| 中文摘要: |
| 为了评估除草剂对七星瓢虫Coccinella septempunctata的毒性影响和初级风险，采用药膜法进行了3种除草剂的急性接触毒性测试，并评估其初级风险。结果表明：10%噁唑酰草胺乳油、10%噁嗪草酮悬浮剂和20%异噁唑草酮悬浮剂对七星瓢虫的急性接触毒性分别为LR50＞3.61×10^2 g a.i./ha，LR50＞1.485×10^2 g a.i./ha，LR50＞3.60×10^2 g a.i./ha。10%噁唑酰草胺乳油、10%噁嗪草酮悬浮剂和20%异噁唑草酮悬浮剂的相对安全系数＜5，属于中等及以下风险农药，对七星瓢虫的农田内和农田外喷雾场景风险均可接受（危害商分别为 HQin＜0.997，HQin＜2.000，HQin＜1.000，HQin均＜5；HQoff＜0.020，HQoff＜0.020，HQoff＜0.020，HQoff均＜5）。综上所述，上述3种除草剂在田间应用时对七星瓢虫安全。 |
| 英文摘要: |
| In order to evaluate the toxic effects and risks of herbicides on Coccinella septempunctata, the acute contact toxicity tests of 10% metamifop emulsifiable concentrate (EC), 10% oxaziclomefone suspension concentrate (SC) and 20% isoxaflutole suspension concentrate (SC) to C.septempunctata were conducted by tube method. The results showed that toxicity LR50 of 10% metamifop emulsifiable concentrate (EC), 10% oxaziclomefone suspension concentrate (SC) and 20% isoxaflutole suspension concentrate (SC) to the C.septempunctatas were＞3.61×10^2 g a.i./ha, ＞1.485×10^2 g a.i./ha, ＞3.60×10^2 g a.i./ha. The relative safety factors of 10% metamifop emulsifiable concentrate (EC), 10% oxaziclomefone suspension concentrate (SC) and 20% isoxaflutole suspension concentrate (SC) were less than or equal to 5, which belonged to medium and below-risk pesticides. The risk of 10% metamifop emulsifiable concentrate (EC), 10% oxaziclomefone suspension concentrate (SC) and 20% isoxaflutole suspension concentrate (SC) to C.septempunctata were acceptable for in-field and off-field exposure scenario (hazard quotients respectively, HQin＜0.997，HQin＜2.000，HQin＜1.000，HQoff＜0.020，HQoff＜0.020，HQoff＜0.020, all HQin and HQoff＜5). In conclusion, the above three herbicides were safe for C.septempunctata when applied in the field. |
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