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通过田间植株直接施药、定期采样后,采用高效液相色谱法检测人参及其土壤中申嗪霉素的残留量,研究了其在人参及田间土壤中的消解动态和最终残留量,并在室内模拟环境条件下,初步探讨了土壤类型及含水量、微生物、温度因素对其在土壤中降解的影响。结果表明:1%申嗪霉素悬浮剂在人参叶片及其田间土壤中的消解动态均符合一级动力学方程,消解半衰期分别为3.4和3.0 d;以推荐高剂量有效成分用量18 g/hm2(制剂用量为1.8 kg/hm2)和推荐高剂量的1.5倍有效成分用量27 g/hm2(制剂用量为2.7 kg/hm2)2个施药剂量喷雾施药,距最后一次施药后7、14和21 d采收的人参鲜根和干根中申嗪霉素的最终残留量均低于检测限(0.002 mg/kg);室内模拟环境条件下,微生物作用增强、有机质含量高、温度升高和含水量增加,均可有效促进土壤中申嗪霉素的降解。
Through the direct application of plants in the field, regular sampling, the use of high performance liquid chromatography detection of ginseng and its soil in the residual amount of ShenZhenMin its ginseng and field soil digestion dynamics and the final residue, and in The effects of soil type, water content, microorganism and temperature on the degradation of soil in soils were studied under indoor simulated environment. The results showed that the digestion kinetics of 1% sodiadin suspension in ginseng leaves and its soil were in accordance with the first-order kinetic equation, the half-lives of digestion were 3.4 and 3.0 d, respectively. Based on the recommended dosage of high-dose active ingredient of 18 g / hm2 (Dosage of 1.8 kg / hm2) and 1.5 times the recommended high dosage of 27 g / hm2 (dosage of 2.7 kg / hm2) two spraying dose application, from the last application of 7,14 And the residual residues of shenazmycin in fresh and dried roots of Ginseng under 21 d were all below the limit of detection (0.002 mg / kg). Under indoor simulated environmental conditions, the effect of microorganisms was enhanced, the content of organic matter was high and the temperature was increased And water content increased, can effectively promote the degradation of soil in the presence of Shenzilin.