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在黄淮海平原选择三种不同质地类型的土壤（砂壤土，淤土，风沙土），各设1．5m×1．5m两个小区，其中一个小区在试验开始前两天灌水约56kg，以获得不同的初始含水量。将100mm含有染色剂亮蓝的水灌入小区，一天之后，开挖1m×1m的剖面拍照，进行图像分析处理，计算剖面中染色百分比随深度的变异，研究所形成的优势流的状况与土壤类型、土壤初始含水量的关系。结果表明：不同土壤发生优势流的程度不同，结构发育好的土壤更容易形成优势流；在风沙土和砂壤土上初始含水量影响优势流形成的程度，初始含水量越高，优势流现象越明显，但在本试验设置的含水量条件下这种差异在淤土上是不显著的。在比较容易形成优势流的砂壤土上进行的多效唑和非反应性阴离子（氯离子）的优势迁移研究表明：氯离子极易随水分迁移，在优势流存在的地方采集土壤样品均得到其氯离子含量远远高于土壤本底值的结果；对于迁移性一般的多效唑，在染色剂到达的最大深度亦能测得其存在。
Three different types of soil (sandy loam soil, silt soil and aeolian sandy soil) were selected in the Huang-Huai-Hai Plain, each with 1.5m × 1.5m two plots. One of them plotted about 56kg two days before the start of experiment Get different initial moisture content. One day later, a section of 1m × 1m was excavated for image analysis and processing, and the variation of the percentage of staining in the section with depth was calculated. The situation of the dominant flow formed by the study and the soil Type, the initial soil moisture content. The results show that the degree of dominant flow in different soils is different, and the soils with well-developed structure are more likely to form dominant flow. The initial water content on aeolian sandy soil and sandy loam affects the degree of dominant flow formation. The higher the initial moisture content, Obviously, this difference is not significant in the silt under the water content set in this test. The migration of paclobutrazol and non-reactive anions (chloride) on sand loam which is easier to form dominant flow shows that chloride ion migrates easily with water and the soil samples are collected in the place of dominant flow to obtain chloride ion The content is much higher than the soil background; for the general mobility of paclobutrazol, the maximum depth of the dye can also be measured to reach its existence.