ABSTRACT

Soil sampling is decisive in determining its physical or chemical quality. In determining soil physical quality, methods for sampling undisturbed soil samples are not efficient from qualitative, financial, and ergonomic point of view, and it is necessary for the development of new collection methods. In this study, we developed a soil hydraulic sampler coupled to a tractor to collect undisturbed soil samples in different production systems. To validate the soil ‘Hydraulic’ sampler, an experiment was conducted in completely randomized design in 3 × 3 factorial arrangement with four replications. ‘Uhland’, ‘Castle’ and ‘Hydraulic’ samplers were used to collect soil undisturbed soil samples in three managements: no-tillage system, minimum cultivation and crop livestock integration system. Undisturbed soil samples were processed to determine soil bulk density, macroporosity, microporosity and total porosity. ‘Uhland’ sampler was not able to characterize the soil bulk density for different management systems, as there was a large variation coefficient in samples collected. ‘Castle’ sampler showed similar behavior for ‘Hydraulic’ sampler, differentiating studied agricultural systems. ‘Hydraulic’ sampler was efficient in collecting undisturbed soil samples, characterizing soil physical properties under different soil management systems.

摘要

土壤取样在确定其物理或化学质量方面具有决定性作用。在确定土壤物理质量时，从定性、财务和人体工程学的角度来看，原状土壤样品的采样方法效率不高，因此有必要开发新的采集方法。在这项研究中，我们开发了一种与拖拉机相连的土壤液压采样器，用于在不同的生产系统中采集未受干扰的土壤样品。为了验证土壤“液压”采样器，我们以完全随机设计的 3 × 3 因子排列进行了四次重复实验。使用“Uhland”、“Castle”和“Hydraulic”采样器在三种管理方式下采集土壤原状土壤样品：免耕系统、最小耕作和农畜一体化系统。处理原状土壤样品以确定土壤容重、大孔隙度、微孔隙度和总孔隙度。'Uhland' 采样器无法表征不同管理系统的土壤容重，因为采集的样品存在较大的变异系数。“城堡”采样器与“液压”采样器表现出相似的行为，从而区分了研究的农业系统。'Hydraulic' 采样器在收集原状土壤样品方面非常有效，可在不同土壤管理系统下表征土壤物理特性。区分研究的农业系统。'Hydraulic' 采样器在收集原状土壤样品方面非常有效，可在不同土壤管理系统下表征土壤物理特性。区分研究的农业系统。'Hydraulic' 采样器在收集原状土壤样品方面非常有效，可在不同土壤管理系统下表征土壤物理特性。