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为了揭示长期人为管理与利用过程对于土壤质量的作用与影响,本试验研究了陕西关中地区旱地农田土壤紧实度和容重空间变异特征。研究结果表明:在水平方向上土壤紧实度和容重具有中等变异强度,土壤紧实度和容重以村庄为中心向外逐渐增大;在垂直方向上土壤紧实度和容重同样存在明显的变异性。进一步分析表明,土壤紧实化的水平空间变异特征是人为长期采用就近原则进行有机培肥,对土壤质量产生的作用与影响;而垂直剖面上的差异性则是多年旋耕产生的结果。所以,加强土壤培肥,改善现行耕作制度显得极为重要。
In order to reveal the effect and influence of long-term man-made management and utilization processes on soil quality, this study studied the spatial variability of soil compaction and bulk density of dry farmland in Guanzhong, Shaanxi Province. The results show that soil compaction and bulk density have medium variation intensity in the horizontal direction, and soil compaction and bulk density increase outward with the village as the center. Soil compaction and bulk density in the vertical direction also have obvious variation Sex. Further analysis shows that the characteristics of horizontal spatial variability of soil compaction are the effects and effects of organic fertilization on long-term adoption of organic fertilization, which has the effect on soil quality; and the difference in vertical profile is the result of years of rotary tillage. Therefore, it is extremely important to strengthen the soil fertilization and improve the current farming system.