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研究了除草剂拉索在滨海冲积沙壤中的残留及其对浅层地下水的影响，并用ＰＲＺＭ模型进行计算机模拟．两年连续试验结果表明，拉索在施药区内的浅层地下水中均有检出．在施药区外１０ｍ处，施药６０ｄ后亦有检出．降雨对其移动影响显著．拉索在土壤中残留动态的田间测定结果与计算机模拟基本一致．根据现有结果认为，拉索可在我国使用，但使用地区应作适当限制．
The effects of herbicides on the coastal alluvial sandy soils and their effects on shallow groundwater were studied and the PRZM model was used for computer simulation. Two years of continuous test results show that cable in the application area of shallow groundwater are detected. In the application area 10m Department, 60d after application also detected. Rainfall has a significant impact on its movement. The determination results of the residual dynamic of the cable in the soil are basically the same as the computer simulation. According to the existing results, cable can be used in our country, but the use of the area should be appropriately limited.