3种农药及其复配剂对日本鹌鹑的急性毒性比较

采用"经口灌胃法"测定了3种农药及其复配剂对鹌鹑的24 h、48 h、72 h和168 h急性毒性,根据我国《化学农药环境安全评价实验准则》中对鸟类的急性经口毒性划分的规定,3种农药及其复配剂对鹌鹑的毒性等级如下:35%精甲霜灵悬浮种衣剂对鸟类的24 h、48 h、72 h和168 h-LD_(50)均大于500 a.i.mg·kg~(-1)bw(以单位体重计),属"低毒"级,25 g·L~(-1)咯菌腈悬浮种衣剂对鸟类的24 h、48 h、72 h和168 h-LD_(50)也均大于500 a.i.mg·kg~(-1)bw,属"低毒"级,25%噻虫嗪水分散粒剂对鸟类的24 h、48 h、72 h和168 h-LD_(50)分别是695 mg·kg~(-1)bw、587 mg·kg~(-1)bw、502 mg·kg~(-1)bw、502 mg·kg~(-1)bw,属于"低毒"级;25%噻虫嗪·咯菌腈·精甲霜灵悬浮种衣剂对鸟类的24 h、48 h、72 h和168 h-LD_(50)分别是754 mg·kg~(-1)bw、504 mg·kg~(-1)bw、504 mg·kg~(-1)bw、504mg·kg~(-1)bw,也属于"低毒"级。

The Toxicity of Three Pesticides of Mefenoxam, Thiamethoxam, Fludioxonil and Their Compounds to Coturnix coturnix japonica

Coturnix coturnix japonica were orally given with three pesticides and their compounds to determine their 24 h, 48 h, 72 h and 168 h-LD₅₀ values. And according to acute oral toxicity grading standards for birds in China, the 24 h, 48 h, 72 h and 168 h-LD₅₀ values of mefenoxam seed coating agent are all above 500 a.i.mg kg^-1 (bw) so it is of low toxicity. The 24 h, 48 h, 72 h and 168 h-LD₅₀ values of fludioxonil seed coating agent are all above 500 a.i.mg kg^-1 (bw) so it is of low toxicity. Thiamethoxam water dispersible granules is of low toxicity because its 24 h, 48 h, 72 h and 168 h-LD₅₀ values are 695 mg kg^-1 (bw), 587 mg kg^-1 (bw), 502 mg kg^-1 (bw), 502 mg kg^-1 (bw). Thiamethoxam-fludioxonil-mefenoxam seed coating agent is also of low toxicity because its 24 h, 48 h, 72 h and 168 h-LD₅₀ values are 754 mg kg^-1 (bw), 504 mg kg^-1 (bw), 504 mg kg^-1 (bw) and 504 mg kg^-1 (bw).