模拟条件下三唑磷在稻田中的分布、迁移、消解及相关环境因子的影响

Distribution,movement and dissipation of triazophos in rice plant and the impact of related environmental factors through the simulated experiments

摘要: 采用室内模拟方法研究了三唑磷在水稻-水-土壤中的分布、迁移及消解情况,探讨了三唑磷的消解与环境温度、光照及降雨的关系。结果表明:于水稻苗期喷施药液,0～3 d内三唑磷主要分布在田水和土壤中,第7 d至试验结束时则主要吸附、积累于水稻植株中;三唑磷在水稻、田水和土壤中的消解半衰期分别为4.45、1.56和5.24 d,相互间存在显著差异(PPPPP<0.05)。

Abstract: Through the simulated experiments,the mechanism of distribution,movement and dissipation of trizophos in the ecosystem of rice-water-soil was investigated and the impact of environmental temperature,photoperiod and rainfall on dissipation of triazophos were also analyzed.The trial of distribution,movement and dissipation of triazophos in the system of rice-water-soil indicated triazophos mostly distributed in water and soil during 0-3 d,and then it distributed in rice plant from the 7 d to the end of trial.The half-lives of triazophos were 4.45 d,1.56 d and 5.24 d in rice plant,water and soil respectively,which had significant differences(PPPPP<0.05).