在新疆塔河地区管道沿线选取12处位置埋设试片，测试了埋设点处土壤的理化性能并对其进行腐蚀性评分，综合分析了土壤腐蚀性与阴极保护的关系。结果表明：由于土壤腐蚀的复杂性，管道腐蚀速率与土壤腐蚀性评分并非正比关系；根据GB/T 21448-2017标准，4处位置管道同时满足阴极保护电位低于-850 mV和电位极化量大于100 mV的准则，7处位置管道仅满足电位极化量大于100 mV准则；当管道保护电位满足GB/T 21448-2017标准准则时，管道的腐蚀速率均低于0.025 4 mm/a（NACE RP0775-2005标准规定），同时管道保护度都可达85%以上（GB/T 21447-2018标准规定）。

Twelve locations along a pipeline in Tahe region of Xinjiang were selected to bury coupons. The physicochemical properties of the soil at the buried sites were tested, and their corrosion ratings were given. The relationship between soil corrosion and cathodic protection was comprehensively analyzed. The results show that the corrosion rate of pipeline was not directly proportional to the corrosion rating of soil, due to the complexity of soil corrosion. Based on GB/T 21448-2017 standard, four locations on the pipeline met the criteria of cathodic protection potential less than -850 mV and potential polarization degree greater than 100 mV, seven sites on the pipeline met the criterion of potential polarization degree greater than 100 mV only. When the protection potential of pipeline met the protection criteria of GB/T 21448-2017 standard, the corrosion rates of the pipeline were lower than 0.025 4 mm/ a (specified in NACE RP0775-2005 standard), and the protection degrees for the pipeline were higher than 85% (specified in GB/T 21447-2018).