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本文报导了喹硫磷(EKalux)在甘兰、白菜上的残留动态、检测方法及其安全使用试行标准。在甘兰、白菜的莲座期喷洒12.5克/亩和25克/亩(有效成分)药液,药剂消失较快,施药后弓天分别消失76%和82%,13天残留量降到0.1ppm,半衰期分别为1.3天和2.1天,在推荐使用药量(12.5—25克/亩)下施药1—3次,间隔期为14天,全株残留量低于0.1ppm。参照国外规定喹硫磷在甘兰上的允许残留量为0.2毫克/公斤,安全使用试行标准暂定为;用50克/亩25%的喹硫磷乳油1000倍液喷雾,使用1—3次,最后一次施药距采收要间隔14天以上。
This paper reports on the residue dynamics, detection methods and safe use trial standards of EKalux in Chinese cabbage and cabbage. In the cabbage of cabbage in cabbage and cabbage, 12.5g / mu and 25g / mu (active ingredient) were sprayed on the cabbage. The medicament disappeared quickly and disappeared by 76% and 82% respectively. The residue after 13 days reduced to 0.1 ppm and half-lives of 1.3 and 2.1 days, respectively. The recommended dosages (12.5-25 g / mu) were applied 1-3 times with an interval of 14 days and the whole plant residue was less than 0.1 ppm. Reference to foreign provisions of quetiapine in kale on the allowable residue of 0.2 mg / kg, tentative standards for the safe use of tentatively; with 50 g / mu 25% quetiapine 1000 times spray, using 1-3 times , The last time from the harvesting interval to harvest more than 14 days.