TY - JOUR A2 - Miano, Teodoro M. AU - Laekemariam, Fanuel AU - Kibret, Kibebew PY - 2020 DA - 2020/05/13 TI - explain Soil Soil Heterogeneity in Southern Ethiopia然而，在大多数情况下，缺乏更大规模的土壤养分信息。因此，肥料咨询服务依赖于地毯式推荐方法。随后，它影响了产量和盈利能力。本研究旨在解释埃塞俄比亚南部卧来塔地区土壤肥力的异质性。采集了约789个土壤样品，以评价土壤的物理性质(颜色、粒径、容重)和化学性质(pH、OC、N、P、K、Ca、Mg、B、Cu、Fe、Mn、Zn、PBS和CEC)。采用激光衍射法测定土壤颗粒，中红外漫反射光谱法测定有机碳、全氮和CEC。其余元素采用梅赫里希- iii萃取和电感耦合等离子体(ICP)光谱仪测量。主成分分析结果表明，交换碱、CEC、pH、有效磷、铜、B和粒径占总变化的52%。粘土质和酸性土壤反应占主导地位。 Soil parameters with the following ranges were found at low status: soil OC (0.2–6.9%), total N (0.01–0.7%), available P (0.1–238 mg/kg), S (4–30 mg/kg), B (0.01–6.9 mg/kg), and Cu (0.01–5.0 mg/kg). Besides, low levels of exchangeable Ca, Mg, and K (Mg-induced K deficiency) on 22, 34, and 54% soil samples, respectively, were recorded. The soil contained sufficient Fe, Zn, and Mn. In conclusion, the study aids in developing practical decision for optimum soil management interventions and overcomes lower productivity occurring due to fertilizer use that is not tailored to the local conditions. Overall, continuous cropping, low return of crop residues, and low and/or no fertilizer application might have caused the low status of N, P, K, S, B, and Cu. Therefore, application of inorganic fertilizers specific to the site, lime in acidic soils, and organic fertilizers are recommended to restore the soil fertility and improve crop productivity. SN - 1687-7667 UR - https://doi.org/10.1155/2020/6161059 DO - 10.1155/2020/6161059 JF - Applied and Environmental Soil Science PB - Hindawi KW - ER -