本文报道了稻瘟灵在水稻及其环境中的残留与降解研究,该药在水稻叶片上的降解半衰期为3～4.8天,30天后的残留量均低于 1mg/kg;糙米中的最终残留量均低于2mg/kg:在谷壳和稻秆中的残留则较高;田水及土壤中的残留量均低于0.2mg/kg.文中还简要报道了稻瘟灵的残留分析方法,回收率在80.40～103.33%之间. In this paper, we report the study on the residues and degradation of rice blast in rice and its environment. The half-life of the product is 3 ~ 4.8 days in rice leaves and less than 1 mg / kg in 30 days. The final residue in brown rice The residues were lower than 2mg / kg in rice husk and rice straw residues, the residues in field water and soil were all less than 0.2mg / kg.The residual analysis method of rice blast was also briefly reported in this paper, The recovery rate is between 80.40 ~ 103.33%.