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| 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） |
| Author Name | Affiliation | | JIANG Li-Ben, XU Qiu-Jing, ZHANG Pu-Juan, GUO Cheng-Bao, TIAN Hou-Jun, CAO Rong-Xiang | 1. Nanjing Institute of Agricultural Sciences in Jiangsu Hilly Area, Nanjing 210046, China
2. Institute of Plant Protection, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China
3. China Agricultural Biosecurity Science Center East China Sub-Center, Fuzhou 350013, China |
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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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