70%丙森锌可湿性粉剂对环境生物的安全性评价

Safety evaluation of propineb on environmental organisms

【背景】丙森锌是一种广谱、速效、残效期长的保护性有机硫杀菌剂,广泛用于作物病害的防治,但是药剂的广泛使用也可能会对农田环境生物产生一定的影响。【方法】根据《化学农药环境安全评价试验准则》,采用多种室内模拟试验,测定了丙森锌对环境中6种非靶标生物鹌鹑、蜜蜂、家蚕、斑马鱼、大型溞和蚯蚓的毒性,并进行了环境安全性评价。【结果】70%丙森锌可湿性粉剂对鹌鹑、蜜蜂的毒性为低毒;对家蚕的96 h LC50为0.3990 mg·L-1,属剧毒;对斑马鱼96 h LC50为1.4764 mg·L-1,属中毒;对大型溞的48 h EC50为2.7406 mg·L-1,属中毒;对蚯蚓的14 d LC50为29.0737 mg·kg-1,为低毒。【结论与意义】该研究结果可为丙森锌的风险评估和环境安全管理提供依据,并为其合理使用提供基础资料和科学指导。

Background Propineb is an organic sulfur fungicide with protective broad spectrum but with long residual effect in soil . Being readily available , propineb is widely used for preventing plant diseases .It may have some negative effects on other organisms in the fields.[Method]Toxicity of propineb on six untargeted species （Japanese quail, bee, silkworm, zebrafish, daphnia and earthworm） was tested by various indoor simulated tests , according to ＂Experimental Guideline for Environmental Safety Evaluation of Chemical Pesticides＂, and toxicity bioassay was also conducted .[Result]The results showed that the toxicity of propineb to bird and bee was low.The LC50（96 h） for silkworm was 0.3990 mg· L-1 and considered extremely toxic.The LC50（96 h） for fish and the EC50 （48 h） for daphnia were considered medium in terms of toxicity with values of 1.4764 mg· L-1 and 2.7406 mg· L-1 re-spectively.and the LC50（14 d） of propineb for earthworm was 29.0737 mg· kg-1, representing a low toxicity.[Conclusion and significance]This study provides scientific evidence for risk assessment and environmental security management of propineb , and ar-gument and scientific guidelines for its reasonable use .