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本试验根据表面活性剂的物理化学特征，测定不同表面活性剂在不同浓度时的表面张力、接触角、干燥时间等物理性状，并结合室内药效测定，初步验证了表面活性剂对莠去津的增效作用．试验结果表明，加入表面活性剂后可以显著地降低药液的表面张力，减少接触角，降低干燥时间，这样由于药液湿润展着性的加强，渗透速度的加快，植物体对药剂的吸收、运转能力也大大地加强，从而大大地加快杀草速度，依表面活性剂种类不同，可提前３—７天杀死杂草．
In this experiment, physical and chemical characteristics of surfactant were used to determine the surface tension, contact angle, drying time and other physical properties of different surfactants at different concentrations. Combined with the determination of indoor efficacy, the effects of surfactant on atrazine Synergy. The results showed that the addition of surfactant can significantly reduce the surface tension of the liquid, reduce the contact angle and reduce the drying time, so as the wettability of the liquid to enhance the strengthening of penetration speed, plant absorption of the drug, Working ability is also greatly enhanced, thus greatly accelerating the speed of grass-killing, according to the different types of surfactants, weeds can be killed 3-7 days in advance.