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应用~(14)C-杀螟松研究该农药在模拟稻/鱼生态系统中的残留与分布表明:在稻田水和稻株茎叶中的残留浓度随时间增长而逐渐消减:在土壤、稻株、根系和鱼体中为前期增加,到一定时期后开始衰减。水稻收获期测定,在高剂量处理的稻田水、上层土壤、下层土壤、稻茎叶、糙米和鱼体中、其残留浓度分别为0.0027、0.4994、0.0993、4.2429、2.1024和4.3400ppm;在低剂量处理申,除稻田水未检测出外,分别为0.2653、0.0380、1.7818、0.9633和2.1469ppm。在土壤和稻株中结合态残留物所占比例高达60—90％,且有随时间而增加的趋势
The application of ~ (14) C: fenitrothion to study the residue and distribution of the pesticide in the simulated rice / fish ecosystem showed that the residual concentration in paddy field and rice plant stems and leaves gradually diminished with time: in the soil, Strain, root system and fish body for the pre-increase, to a certain period of time began to decline. In the rice harvesting period, the residual concentrations were 0.0027, 0.4994, 0.0993, 4.2429, 2.1024 and 4.3400ppm in paddy water, upper soil, lower soil, rice stem, brown rice and fish treated with high dose, Treatment, except for paddy water was not detected, respectively 0.2653,0.0380,1.7818,0.9633 and 2.1469ppm. The proportion of bound residues in soils and rice plants is as high as 60-90% and tends to increase over time