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本研究首次用间接竞争ELISA方法测定了甲胺磷在水稻植株各部位、稻田水和土壤中的残留和消解动态，并对稻田施药后甲胺磷因径流和渗漏而引起的流失进行了定量分析。结果表明：甲胺磷在水稻稻草、稻穗、稻田田水和土壤中的残留和消解是以指数形式进行的，消解半衰期分别为6．35，3．27，2．39，4．25d。施药当天下暴雨可引起甲胺磷的径流流失，在本试验条件下径流流失量达到施药量的9.69％，渗漏量达到施药量的0．73％。通过测定用药地区井水中甲胺磷的含量以及室内模拟渗漏试验证实田间施用的甲胺磷可经土壤渗漏而污染地下水。
In this study, indirect enzyme-linked immunosorbent assay (ELISA) was used for the first time to determine the residues and digestion dynamics of methamidophos in various parts of rice plants, rice paddy water and soil. Methane phosphorus loss due to runoff and leakage was evaluated Quantitative analysis. The results showed that the residues and digestion of methamidophos in rice straw, paddy rice, paddy field water and soil were in exponential form with the half-lives of digestion of 6.35, 3.27, 2.39 and 4.25 days, respectively. The heavy rain on the day of pesticide application could cause the runoff loss of methamidophos. Under the test conditions, the runoff loss reached 9.69% and the leakage reached 0.73%. By measuring the methamidophos content in well water of the medication area and indoor simulated leakage test, it was confirmed that methamidophos applied in the field could pollute the groundwater through soil leakage.