30%醚菌酯悬浮剂在小麦及土壤中的残留动态

Residues Dynamics of Kresoxim-methyl 30%SC in Wheat and Soil

为了评价醚菌酯在小麦上使用后的残留动态及环境安全性,在辽宁、山东、黑龙江三地同时进行了醚菌酯在小麦上的残留动态试验。结果表明:在辽宁地区,醚菌酯在小麦植株上的半衰期为7.3d,在土壤中的半衰期为7.0d;在山东地区,醚菌酯在小麦植株上的半衰期为5.4d,在土壤中的半衰期为9.4d;在黑龙江地区,醚菌酯在小麦植株上的半衰期为9.7d,在土壤中的半衰期为12.8d。施药后间隔21d,小麦籽粒中醚菌酯的残留量均低于1mg/kg。

Field trail for kresoxim-methyl residue in wheat and soil were conducted in Liaoning, Shandong and Heilongjiang province respectively. The results showed that the half-life of degradation for kresoxim-methyl was 7.3 d in wheat, 7.0 d in soil in Liaoning. The half-life of degradation in Shandong was 5.4 d in wheat, 9.4 d in soil. The half life of degradation in Heilongjiang was 9.7 d in wheat, 12.8 d in soil. The terminal residue in wheat was less than 1 mg/kg.