| Numerical sim ulation of transport and transform ation of insecticide 1-(2-chlorobenzoyl)-3-(4-chlorophenyl) urea in unsaturated soil |
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| 作者姓名： | Yang Shkiu Yang Dawen Lei Zhidong Yang Kewu Mo Hanhong Zhang Lianzhong |
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| 作者单位： | Department of Hydraulic Engineering，Tsinghua University，Beijfing 100084，China,Department of Hydraulic Engineering，Tsinghua University，Beijfing 100084，China,Department of Hydraulic Engineering，Tsinghua University，Beijfing 100084，China,Research Center for Eco-Environmental Sciences，Chinese Academy of Sciences，Beijing 100085，China,Research Center for Eco-Environmental Sciences，Chinese Academy of Sciences，Beijing 100085，China,Research Center for Eco-Environmental Sciences，Chinese Academy of Sciences，Beijing 100085，China |
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| 基金项目： | The work was supported by National Natural Science Foundation of China. |
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| 摘 要： | A numerical simulation model of pesticide transport and transformation in unsaturated soil is presented in this paper．The model was developed under basic principles of movement of water and solute in soil under transient condition and overall consideration water flow：pesticide convection，diffusion, dispersion，sorption and degradation．The model was tested for the persistence and leaching of 1-(2-chlorobenzoyl)-3-(4-chlorophenyl)urea(CCU)using data from soil columns under laboratory conditions．The results of the test indicate that the modeling approach is simple and effective in describing movement and transformation of pesticides in soils．
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| 关 键 词： | numerical simulation insecticide transport transformation soil． |
| 收稿时间： | 1991/12/19 0:00:00 |
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