阿维菌素和甲维盐对家蚕的毒性测定 |
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引用本文: | 沈忠明,孙海燕,戴建忠,陈伟国.阿维菌素和甲维盐对家蚕的毒性测定[J].蚕桑通报,2014(1):15-17. |
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作者姓名: | 沈忠明 孙海燕 戴建忠 陈伟国 |
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作者单位: | 许村镇农技水利服务中心;海宁市蚕桑技术服务站; |
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摘 要: | 本文测定了阿维菌素和甲氨基阿维菌素苯甲酸盐(简称"甲维盐")4种杀虫剂制剂对家蚕的急性食下毒性和残毒期,结果表明:对3龄起蚕的LC50值分别为阿维菌素乳油7.2343×10-4mg/L,阿维菌素水乳剂7.6512×10-4mg/L,甲维盐微乳剂8.5940×10-4mg/L,甲维盐乳油14.0112×10-4mg/L。阿维菌素和甲维盐4种制剂的相同质量浓度(13.33 mg/L)稀释液喷洒桑树,在桑叶上的残毒期分别为3.2%阿维菌素乳油2400倍约为50 d,1.8%阿维菌素水乳剂1350倍、2.3%甲维盐乳油1725倍约为60 d,2.2%甲维盐微乳剂1650倍>60 d;阿维菌素类4种制剂对家蚕的急性食下毒性极强,处理间差异较小,但在桑叶上的残毒期很长,处理间差异较大。
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关 键 词: | 阿维菌素 甲维盐 家蚕 毒性 |
Determination of Silkworm Toxicity of Avermectin and Emamectin Benzoate |
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Institution: | SHEN Zhong-ming, SUN Hai-yan, DAI Jian-zhong, CHEN Wei-guo(1. Xueun Agriculture and Water Conservancy Service Center, Haining 314409 Zhejiang, China; 2. Haining Serieultural Technology Service Stations, Haining 314400 Zhejiang, China) |
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Abstract: | In this paper, the acute peroral toxicity and residual times of 4 insecticides with Avermectin and Emamectin Benzoate preparations were determined. The results showed that the LC50on the third period silkworm were 7.2343×10-4 mg/L of Avermectin EC, 7.6512×10-4mg/L of Avermectin EW, 8.5940×10-4mg/L of Emamectin Benzoate Microemulsion and 14.0112×10-4mg/L of Emamectin Benzoate Emulsifiable Concentrate. The same concentration(13.33 mg/L) of 4 diluted preparations with Avermectin and Emamectin Benzoate were sprayed on the mulberry, and the residual time were 50 d of 2400 times' 3.2% Avermectin EC, 60 d of 1350 times' 1.8% Avermectin EW and 1725 times' 2.3% Emamectin Benzoate Emulsifiable Concentrate, and more than 60 d of 1650 times' 2.2% Emamectin Benzoate Microemulsion. It was concluded that the 4 Avermectin preparations were extremely toxic on the acute peroral toxicity, and the residual times on the mulberry leaves were very long. |
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Keywords: | Avermectin Emamectin Benzoate silkworm toxicity |
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