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通过对黄土地区典型道路边坡填方和挖方路段土壤养分指标的对比测试,分析边坡坡顶位、坡底位,土壤养分指标分布差异,测试结果呈现出填方路段不同坡位磷素垂向分布曲线来看,各层含量值均在0.06%左右,填方与挖方路段规律相同。同时该研究还对不同坡位土壤表层(0~10cm)、中层(10~30cm)、下层(30~70cm)的养分含量垂向分布规律进行分析,得到了不同坡位钾含量大部分集中在1.7%,符合黄土区全钾含量丰富的特征,而不同坡位磷素垂向分布曲线,土壤中的全磷含量在剖面上则无明显变化,总体来讲该研究在边坡的不同坡位土壤养分含量的剖面分布特征无明显差别。
By comparing the soil nutrient indicators of the typical road slopes in the loess area with those in the excavation section, the distribution of soil nutrient indexes at the top of the slope, the bottom of the slope and the soil were analyzed. The results showed that the content of phosphorus To the distribution curve point of view, the content of each layer is about 0.06%, filling and excavation section of the same law. At the same time, the study also analyzed the vertical distribution of nutrient content in different slope positions (0 ~ 10cm), middle (10 ~ 30cm) and lower (30 ~ 70cm) 1.7%, in line with the characteristics of rich in total potassium in loess area, while the vertical distribution curve of phosphorus in different slopes, total phosphorus content in soil no significant changes in the profile, on the whole, No significant difference was found in the profile distribution of soil nutrient content.