不同套袋方式下戊唑醇在香蕉上的最终残留研究

摘要

对比了香蕉果穗不套袋、断蕾后套袋、全程套袋三种不同套袋方式下戊唑醇在香蕉全果和果肉中的残留情况.按推荐施药剂量和推荐施药剂量1.5倍施用3次和4次250g/L戊唑醇水乳剂,末次试药距收获期42 d时,不套袋处理的最终残留量均高于戊唑醇在香蕉上的最大残留限量0.05 mg/Kg,断蕾后套袋的最终残留量均低于0.05 mg/Kg,全程套袋的最终残留量均低于最低检测浓度0.025 mg/kg.香蕉套袋可以有效阻挡农药在蕉果上的附着,从而降低戊唑醇在香蕉上的残留量.%The final tebuconazole residues in banana and banana flesh in there different bagging types, no-bagging, bagging after male flower cluster cutting off and bagging through the flowering and ripening stages, were compared. Tebuconazole was sprayed three and four times with the recommended dose and 1.5 times of recommended dose of 250 g/L tebuconazole emulsion in water, the residual amount in no-bagging banana was higher than the maximum residue limit 0.05 mg/kg 42 d after spraying, the residue in banana bagging after male flower cluster cutting off was lower than 0.05 mg/kg, and that in banana bagging through the flowering and ripening stages was lower than the limit 0.025 mg/kg. The results showed banana bagging could reduce tebuconazole residue.