2Berndtsson R,Bahri A,Jinno K.Spatial dependence of geochemical elements in asemiarid agricultural field[J].Geostatistical properties Soil Sci Soc Am J,1993,57:1323-1329.
7Berndtsson R,Bahri A and Jinno K.Spatial dependence of geochemical elements in a semiarid agricultural field Ⅱ Geo ~ statistical properties[J].Soil Sci.Soc.Am.J.1993,57:1323-1329.
8Stolt M H,Baker J C,Simpson T W.Soil-landscape relationship sin Virginia I.Soil variability and parent material uniformity[J].Soil Sci Soc Am J,1993,57:414-421.