LI Xian-xian,MA Xiao-dan,XUE Ming,et al.Toxicity of Insecticides to Bradysia odoriphaga at Different Temperatures and Their Control Effect in the Fields[J].Northern Horticulture,2014,38(09):125-128.
不同药剂对韭菜迟眼蕈蚊致毒的温度效应及田间药效
- Title:
- Toxicity of Insecticides to Bradysia odoriphaga at Different Temperatures and Their Control Effect in the Fields
- 文章编号:
- 1001-0009(2014)09-0125-04
- 分类号:
- S 633.3
- 文献标志码:
- A
- 摘要:
- 以5种杀虫剂为供试药剂，以韭菜迟眼蕈蚊为供试虫源，采用定量滴加法，在8、16、24℃条件下测定了5种药剂对韭菜迟眼蕈蚊幼虫毒力的温度效应，并进行了盆栽和田间的药效试验。结果表明：5种药剂均表现为正温度效应，其中吡虫啉的正温度效应最明显，24℃时的毒力是8℃时的4.66倍；其次为辛硫磷、噻虫胺和噻虫嗪，三者温度效应基本一致；而甲维盐温度效应最小；盆栽药效试验结果表明，在50 mg/L的处理剂量下，噻虫胺处理的幼虫校正死亡率为75.2％，防效最高，分别比同剂量处理的辛硫磷、吡虫啉和噻虫嗪处理高14.5％、24.8％和28.2％；田间药效试验表明，噻虫胺以100 mg/L和50 mg/L灌根处理最好，处理25 d后的防效达100%和95.2%，显著优于200 mg/L辛硫磷的防效（84.2%）；吡虫啉100 mg/L、噻虫嗪100 mg/L的处理，防效分别达93.7%和96.9%，均优于辛硫磷200 mg/L和100 mg/L的处理；3种新烟碱类杀虫剂对韭蛆防效高，其中以噻虫胺表现优异，对韭菜迟眼蕈蚊的幼虫持续控制作用大，环境友好，十分适合田间防治韭蛆推广应用。
- Abstract:
- Taking 5 kinds of pesticide as test drug and Bradysia odoriphaga as test pest,the effect of temperature on toxicity of seclected insecticides on Bradysia odoriphaga was evaluated,the toxicities of 5 insecticides in 8、16、24℃ were studied with dripping ration liquid method,and their control efficiency in the field were also studied.The results showed that the toxicities of 5 insecticides showed positive temperature effect.Among these insecticides,Imidacloprid showed the most obvious positive temperature effect,toxicity of Imidacloprid in 24℃ was 4.66 times higher than that in 8℃.Methomyl,Clothianidin and Thiamethoxam’s positive temperature effect were similar,and the positive temperature effect of Emamectin benzoate was minimum.In pot test,Emendation larvae mortality was 75.2% when roots were irrigated by Clothianidin 50 mg/L,which was 14.5%,24.8% and 28.2% higher than the same dose treatment of Methomyl,Imidacloprid and Thiamethoxam respectively.In field test,Clothianidin 100 mg/L and 50 mg/L irrigating roots treatments were the best when processed 25 days.The pesticide effect of Clothianidin were 100% and 95.2% while control efficiency of Methomyl 200 mg/L was 84.2%.Pesticide effect of Imidacloprid and Thiamethoxam 100 mg/L irrigating roots were 93.7% and 96.9%respectively,which were also better than Methomyl 200 mg/L and 100 mg/L.The 3 kinds of neonicotinoids all had good pesticide effect on Bradysia odoriphaga.Among them,Clothianidin was outstanding and had a persistent control function on Bradysia odoriphaga.It was environment friendly and very suitable for the application in the fields.
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备注/Memo
第一作者简介：李贤贤（1986-），女，硕士研究生，研究方向为害虫综合治理。E-mail:lixianxian0628@163.com.