Soil disturbance from seed drilling and fertilizer application promotes structural changes that impact the physical quality of soil under no-till (NT). This study tests the hypothesis that spatial and temporal changes to crop rows and interrows along the occurrence of wetting and drying cycles promote changes in soil physical quality under NT. Undisturbed soil samples were taken from 0.0−0.10 m and 0.10−0.20 m depths in a Rhodic Ferralsol under long-term NT on five successive dates, from within the row (R), interrow (IR) and an intermediate distance between the row and interrow (IP). In addition to the spatial and temporal variation of the sampling position, the occurrence of wetting and drying cycles (WDC) was considered. The undisturbed samples were used to determine soil bulk density (BD), soil water retention and penetration resistance curves and the least limiting water range (LLWR). At the 0.0−0.10 m depth, there were systematically lower BD at the R position than at the IR and IP, whereas for the 0.10−0.20 m depth there were no differences among the sampling positions. The LLWR were significantly higher for R compared with IR and IP, suggesting more favourable soil physical conditions for plants at the R position. For the different sampling dates, it was found that there were significant variations in the physical quality of the soil at 0.0−0.10 m while slight variations regardless of the sampling position were verified at the 0.10−0.20 m depth. The changes in soil physical quality within crop rows as well as due to the WDC were only verified at 0.0−0.10 m depth. The WDC impacted the soil physical quality at the IR and IP positions, while soil disturbance during the drilling improved soil physical quality at the R position. The absence of soil disturbance and the reduced magnitude of WDC did not alleviate the soil compaction at the 0.10−0.20 m depth. The temporal variation of rows and interrows induced by crop rotation in areas under NT seems to be a mechanism that alleviates surface soil compaction. In fields managed under NT, the identification of sampling positions, especially of R or IR areas, is fundamental for the proper interpretation of soil physical quality indexes given that R and IR dynamics over time can modify the soil physical properties.

免耕播种和施肥对土壤的干扰促进了结构变化，从而影响了免耕（NT）免耕土壤的物理质量。这项研究检验了以下假设：在湿润和干燥循环的过程中，农作物行和行间的时空变化促进了土壤物理质量的变化。在五个连续的日期，在长期NT下，从Rhodic Ferralsol的0.0-0.10 m和0.10-0.20 m深度采集未受扰动的土壤样品，分别来自行（R），行间（IR）和行与行之间的中间距离插播（IP）。除了采样位置的空间和时间变化之外，还考虑了湿润和干燥周期（WDC）的发生。原样用于确定土壤容重（BD），土壤保水率和渗透阻力曲线以及最低限度水域范围（LLWR）。在0.0-0.10 m的深度处，R位置的BD总体上低于IR和IP处的BD，而对于0.10-0.20 m的深度，采样位置之间没有差异。与IR和IP相比，R的LLWR显着更高，表明位于R位置的植物更有利的土壤物理条件。对于不同的采样日期，发现在0.0-0.10 m处土壤的物理质量存在显着变化，而在0.10-0.20 m深度处验证了与采样位置无关的微小变化。仅在0.0-0.10 m深度处验证了作物行内以及WDC引起的土壤物理质量的变化。WDC影响了IR和IP位置的土壤物理质量，而钻孔过程中的土壤扰动改善了R位置的土壤物理质量。没有土壤扰动和WDC的减小并没有减轻0.10-0.20 m深度处的土壤压实。在北半球北部地区，由作物轮作引起的行和行间的时间变化似乎是减轻表土压实的一种机制。在NT下管理的田地中，确定采样位置，特别是R或IR区域，是正确解释土壤物理质量指标的基础，因为随着时间的推移R和IR动力学会改变土壤的物理特性。没有土壤扰动和WDC的减小并没有减轻0.10-0.20 m深度处的土壤压实。在北半球北部地区，由作物轮作引起的行和行间的时间变化似乎是减轻表土压实的一种机制。在NT下管理的田地中，确定采样位置，特别是R或IR区域，是正确解释土壤物理质量指标的基础，因为随着时间的推移R和IR动力学会改变土壤的物理特性。没有土壤扰动和WDC的减小并没有减轻0.10-0.20 m深度处的土壤压实。在北半球北部地区，由作物轮作引起的行和行间的时间变化似乎是减轻表土压实的一种机制。在NT下管理的田地中，确定采样位置，特别是R或IR区域，是正确解释土壤物理质量指标的基础，因为R和IR随时间的变化会改变土壤的物理性质。