Efficient soil tillage methods to create a favorable environment for commercial forest require proper evaluation of soil compaction with depth, by using operative indicators of physical quality for diverse soils. Our aim was to investigate the spatial variability of field-measured penetration resistance (PR), and then determine the relationships between penetrability and mechanical and hydrologic properties of Planosol, Nitisol, and Regosol used for eucalyptus production. Low, intermediate, and high compaction states were defined based on field PR spatial variability, and in those areas with distinct compaction states we determined bulk density, degree-of-compactness, macroporosity, water retention and availability, and least limiting water range. The soil compaction states are related to composition or capacity (mass/volume) properties, most consistently with soil bulk density and relative compaction. Whether using simple measurements such as penetrability and bulk density, or more complex, integrative properties (e.g. degree-of-compactness and least limiting water range), tillage recommendation would be the same. Namely, deep tillage for Nitisol, and shallower tillage for Planosol and Regosol. In practical terms, the first soil requires deep subsoiling, and second and third soil demand shallower subsoiling associated or not with ridging. In conclusion, mapping of soil compaction states based on PR data can be used for best management practices and tillage recommendation for forest installation.

有效的土壤耕作方法为商品林创造良好的环境，需要通过使用各种土壤物理质量的有效指标对土壤的压实度进行深度评估。我们的目的是调查现场测得的抗穿透性（PR）的空间变异性，然后确定渗透性与用于桉树生产的Planosol，Nitisol和Regosol的机械和水文性能之间的关系。低，中和高压实状态是根据田间PR空间变异性定义的，在那些具有不同压实状态的区域中，我们确定了堆密度，密实度，大孔隙度，保水率和可利用性以及最低限度的水位范围。土壤的压实状态与组成或容量（质量/体积）特性有关，与土壤容重和相对压实最一致。无论使用简单的测量方法（例如渗透性和堆积密度），还是使用更复杂的综合特性（例如紧凑度和最低限度水位范围），耕作建议都是相同的。即，对尼蒂索尔进行深耕，对普莱诺索尔和雷戈索尔进行浅耕。实际上，第一种土壤需要深层深层耕作，而第二种和第三种土壤需要浅层深层耕作，无论是否与垄作有关。总之，基于PR数据的土壤压实状态图可用于最佳管理实践和耕作建议，以供森林安装。紧凑度和最低限度水位范围），耕作建议相同。即，对尼蒂索尔进行深耕，对普莱诺索尔和雷戈索尔进行浅耕。实际上，第一种土壤需要深层深层耕作，而第二种和第三种土壤需要浅层深层耕作，无论是否与垄作有关。总之，基于PR数据的土壤压实状态图可用于最佳管理实践和耕作建议，以供森林安装。紧凑度和最低限度水位范围），耕作建议相同。即，对尼蒂索尔进行深耕，对普莱诺索尔和雷戈索尔进行浅耕。实际上，第一种土壤需要深层深层耕作，而第二种和第三种土壤需要浅层深层耕作，无论是否与垄作有关。总之，基于PR数据的土壤压实状态图可用于最佳管理实践和耕作建议，以供森林安装。