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本文报导敌百虫和西维因在烟草上的残留消解动态和提出安全使用标准。从研究结果看出,在自然条件下,敌百虫和西维因在烟叶上的消解速度中等,前者稍快。分别喷施500倍液,1天后烟草上敌百虫由32.5毫克/公斤下降至15毫克/公斤,西维因由35毫克/公斤下降至16.25毫克/公斤,半衰期均在1天内。而敌百虫喷药后第10天烟叶中的残留量即下降到0.5毫克/公斤,已消失98.46％。西维因喷药后第10—14天烟叶中的残留量下降为1.25～0.75毫克/公斤,消失96.40～97.86％。
This article reports the dynamics of residual digestion of trichlorfon and vioxacin in tobacco and the criteria for its safe use. From the results of the study, we can see that under natural conditions, the trichlorfon and carbaryl are moderately digested at the leaf, and the former is slightly faster. Respectively, spraying 500 times the liquid, a day after the tobacco trichlorfon from 32.5 mg / kg down to 15 mg / kg, the West Vigor reduce from 35 mg / kg to 16.25 mg / kg, half-life are within 1 day. The trichlorfon spraying the first 10 days after the tobacco leaves that the amount of that dropped to 0.5 mg / kg, has disappeared 98.46%. The residues of CIVIL in tobacco leaves decreased from 1.25 to 0.75 mg / kg on the 10th to 14th days after spraying, and disappeared from 96.40 to 97.86%.