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为明确甲氧基丙烯酸酯类(嘧菌酯、醚菌酯、肟菌酯)和三唑类(粉唑醇、腈菌唑、戊唑醇、己唑醇及戊菌唑)杀菌剂对寄生性天敌斑痣悬茧蜂Meteorus pulchricornis的毒性风险,在室内分别采用药膜法和摄入法测定了上述8种杀菌剂对斑痣悬茧蜂存活的影响。结果表明,处理方法对结果有明显影响。在药膜法处理中,肟菌酯表现出最高的触杀毒性,其致死中时间(LT_(50)值)为1.18 d;戊菌唑次之,其LT_(50)值为1.98 d;粉唑醇的毒性最低,LT_(50)值长达52.58 d。在摄入法处理中,供试杀菌剂的LT_(50)值均大于15 d。除粉唑醇药膜处理和己唑醇摄入处理外,其余处理斑痣悬茧蜂的寿命均显著缩短。因此,在实际生产中应关注甲氧基丙烯酸酯类和三唑类杀菌剂,尤其是肟菌酯和戊菌唑对斑痣悬茧蜂等寄生蜂天敌的安全性。
To clarify the parasitic effects of the methoxyacrylates (azoxystrobin, myclobutanil, trifloxystrobin) and the triazoles (flutriafol, myclobutanil, tebuconazole, hexaconazole and penconazole) Sexual enemies of the nematode Meteorus pulchricornis toxicity risk, indoors, respectively, using the membrane method and intake method to determine the above eight kinds of fungicides on the survival of Neretva bursa. The results show that the treatment method has a significant effect on the results. Trifloxystrobin showed the highest contact toxicity in the membrane treatment, the lethal time (LT_ (50)) was 1.18 days, followed by penconazole followed by LT_ (50) of 1.98 days. The toxicity of alcohol is the lowest, with a value of LT50 of 52.58 d. In the intake method, the LT_ (50) values of the test fungicides were both greater than 15 days. In addition to flufenolol membrane treatment and hexaconazole intake treatment, the rest of the life-span treatment were significantly shorter. Therefore, in the actual production should pay attention to the methoxy acrylate and triazole fungicides, especially trifloxystrone and penconazole on the mole nematodes and other parasitozoa enemies safety.