[1] 西安市地方志办公室.西安年鉴2012[M].西安:西安出版社,2012.
[2] Wild A. The potassium status of soils in the savanna zone of Nigeria[J]. Expl. Agric.,1971(7):257-270.
[3] Tening A S, Omueti J I. Potassium status of some selected soils under different land-use systems in the subhumid zone of Nige-ria. Commun[J]. Soil Sci. Plant Anal.,1995,26(5&6):657-672.
[4] Ovalles F A, CollinsM E. Soil-landscape relationships and soil variability in north central Florida[J]. Soil Sci. Soc. Am. J,1986(50):401-408.
[5] Miller PM, Singer M J, Nielsen D R. Spatial variability of wheat yield and soil properties on complex hills[J]. Soil Sci. Soc.Am. J.,1988(52):1133-1141.
[6] Beckett PHT, Webster R. Soil variability: A review[J]. Soils and Fertilizers,1971(34):1-15.
[7] Warrick AW, Nielsen D R. Spatial variability of soil physical properties in the field. In: Hillel D. ed. Applications of SoilPhysics[M]. London: Academic Press,1980:319-344.
[8] 马群,赵庚星.集约农区不同土地利用方式对土壤养分状况的影响[J].自然资源学报,2010,25(11):1834-1843.
[9] 黄绍文,金继运,杨俐苹,等.县级区域粮田土壤养分空间变异与分区管理技术研究[J].土壤学报,2003,40(1):79-87.
[10] 吴天木.测土配方肥样品采集与制备[J].土壤肥料,2007(4):44,103-107.
[11] 奚廷孔,张艳新.土壤样品的采集和处理技术[J].广西农学报,2007(03):37.
[12] 鲍士旦.土壤农化分析(第三版)[M].南京:中国农业出版社,1999.
[13] 苟文平,刘世全,张世熔,等.西藏土壤有效铁含量及其影响因素[J].山地学报,2007,25(3):359-363.
[14] 赵明,蔡葵,赵征宇,等.畜禽粪肥对土壤有效铜锌铁锰含量的影响[J].土壤通报,2007,38(1):93-97.
[15] Itaru Okuda, Masanori Okazaki, Takusei Hashitani. Spatial and temporal variations in the chemical weathering of Basaltic Py-roclastic materials[J]. Soil Sci. Soc. Am. J.,1995(59):887-894.
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