双酰胺类杀虫剂四唑虫酰胺对家蚕的毒性试验
Toxicity Test of the Bisamide Insecticide Tetrazolium on the Silkworm,Bombyx mori
杨一平 1濮利罡 2陈伟国 1戴建忠 1张芬 1戎凤鸣 2孙海燕1
作者信息
- 1. 海宁市经济作物技术服务站,浙江 嘉兴 314400
- 2. 浙江雅云生态农业有限公司,浙江 嘉兴 314407
- 折叠
摘要
四唑虫酰胺是一种新型双酰胺类杀虫剂,为明确其对家蚕的毒性和安全性风险,采用浸叶法测定了200 g/L四唑虫酰胺悬浮剂对家蚕3龄起蚕的急性毒性,LC50为0.335 5 mg/L,属于剧毒级,对养蚕生产具有极高风险性.四唑虫酰胺悬浮剂常规浓度(200 g/L)药液喷洒桑叶,对3龄起蚕的残毒期超过90 d;200 g/L四唑虫酰胺悬浮剂对家蚕未见熏蒸毒性,喷洒桑叶或土壤根灌处理后,有轻微内吸传导毒性.四唑虫酰胺对家蚕的中毒症状与氯虫苯甲酰胺等双酰胺类杀虫剂相似,主要表现为拒食、静伏、吐液、排连珠粪、蚕体缩短等症状.鉴于四唑虫酰胺对家蚕剧毒,残毒期超长,建议蚕桑地区不使用四唑虫酰胺,避免药液污染桑叶而造成养蚕中毒损失.
Abstract
Tetrazolamide is a new type of bis-amide insecticide,in order to clarify its toxicity and safety risk to silkworms,the acute toxicity of 200 g/L tetrazolamide suspension to silkworms starting from the age of 3 was determined by the leaf dipping method,and the LC50 was 0.335 5 mg/L,which was of very high toxicity,and posed a very high risk to sericulture production.The residual toxicity of tetrazolium suspension at conventional concentration(200 g/L)sprayed on mulberry leaves was more than 90 d for silkworms at the age of 3.The fumigation toxicity of tetrazolium suspension at 200 g/L to silkworms was not observed,and there was a slight systemic conductivity toxicity after spraying on mulberry leaves or root-irrigation treatment of soil.The symptoms of tetrazolamide poisoning on silkworms were similar to those of chlorothalonil and other bis-amide insecticides,mainly manifested as refusal to feed,sedentary,vomiting,excreting continuous faeces,shortening of the silkworm body and other symptoms.Since tetrazolamide is highly toxic to silkworms and has a super long residual period,it is recommended that tetrazolamide should not be used in sericulture areas to avoid contamination of mulberry leaves by the liquid,which may cause poisoning losses in sericulture.
关键词
双酰胺/杀虫剂/四唑虫酰胺/家蚕/毒性Key words
Bisamide/Insecticide/Tetrazolamide/Silkworm/Toxicity引用本文复制引用
出版年
2024
NETL
NSTL
万方数据